Next Generation of Printed Maps

keywords: pdf print mapfish wms wfs wmts tms

uk: Комп'ютерні науки

description: Mapfish-print is a library and web-application for printing maps and reports using data from multiple online web mapping solutions like WMS, WMTS, OSM, WFS, GeoJson, etc... The project is now nearly a decade old and is being used by a large number of websites. However, there are limitations to the original design, including the inability to have more than one map in a page, limited formatting and output restricted to PDF (in practical terms).Mapfish-print V3 is the result of a major change in the underlying implementation. Thanks to integration with Jasper Reports and the new pluggable architecture the new version of Mapfish print is more powerful, flexible and scalable than ever before.This talk will be targeted at the primarily website developers and managers will look at: * The new features present in the new version * How to use the new features * How to use the report designer * Examples of advanced formatting * How to upgrade from previous versions * The design decisions that allow mapfish-print to be a more scalable solution * A very high level look at the ways the application can be extended by a developer for a specific vertical

uk: вхід без авторизації

name: Open Source Geospatial Foundation (OSGeo)


Benjamin Adams

type: Person

keywords:
geographic knowledge discovery
geographic information retrieval
geovisualization
text mining
place

cs: Informatika

de: Informatik

fi: tietojenkäsittelytiede

uk: Комп'ютерні науки

en: Computer Science

fr: Informatique

da: Datalogi

es: Ciencias de la Computación

nl: Informatica

cs: Technické vědy

de: Ingenieurwissenschaften

fi: tekniikka

uk: Інженерія

en: Engineering Sciences

fr: Ingénierie

da: Ingeniørvidenskab

es: Ingeniería

nl: Engineering

description: Extremely rich and diverse knowledge about places across the world is available online in a variety of forms, including structured data, image, and natural language description. Map-based exploration of this knowledge has potential to aid a number of applications from education to marketing. In this presentation we describe a system to map geographic regions associated with arbitrary keywords, phrases, and texts by computing topic surfaces over the Earth from unstructured natural language text. Our methodology combines natural language processing and geostatistics and is built using freely available open source tools. We train our system on Wikipedia and travel blog entries and demonstrate it with a general-purpose geographic knowledge exploration tool.

TIB AV-Portal

type: Service

type: WebContent

type: MediaObject

@language: en

cs: přihlášení není vyžadováno

de: keine Anmeldung erforderlich

uk: вхід без авторизації

en: no login required

nl: geen login vereist

name: Mapping Words and Phrases from Geographic Knowledge on the Web

type: Organization

cs: Video

de: Video

fi: Video

uk: Відео

en: Video

fr: Vidéo

da: Video

nl: Video

es: Video


keywords: interpolation QGIS PostGIS GRASS SAGA

uk: Комп'ютерні науки

description: Traditional approaches to interpolating a surface from point samples often assume that if anisotropy is present in the data, it is along a straight line. However, this assumption breaks down for many data-sets, such as river bathymetry, elevations near coastlines, or levels of pollutants along roads. I will present a work-flow using open source tools to make use of the curvilinear anisotropy present in many data-sets by transforming the curved data-set into a straight line (QGIS and PostGIS), applying an interpolation to the transformed data (SAGA, GRASS, or other program with interpolation tools), and finally re-bending the interpolated surface back to the data's original shape (PostGIS).

uk: вхід без авторизації

name: Open Source Work-flow for Surface Interpolation with Curvilinear Anisotropy


keywords: TileMill Mapnik Leaflet OpenLayers efficiency

uk: Комп'ютерні науки

description: Programs that generate map tiles default to generating tiles for abounding box whose dimensions are fixed up and down the zoom stack. Butthe overarchingly common use case calls this default behavior intoquestion. If the ultimate goal of a map is to lock down the display of afeature at a high zoom level, then any tile outside of the invertedpyramid whose truncated top bounds the feature at the desired zoom levelis extraneous, unnecessary.Inspired by a game of marbles that uses a similar shape in its playing,I call this truncated, inverted pyramid the "Tower of Prince Henry,Reversed"[1], and abbreviate it TOPHR.This presentation describes modifications to TileMill, the same strategyimplemented directly through Mapnik XML, the use of the flexible mbtileformat to store the generated tiles, and presents several measures ofthe resulting savings (tile generation time, number of tiles, diskspace). I'll also describe a plug in for Leaflet and an approach forOpenLayers that ensures that map users cannot stray outside the boundsof TOPHR.1. It's also reminiscent of the name of a real album by The Fall or an unreal tarot card.

uk: вхід без авторизації

name: TileMill and the Tower of Prince Henry, Reversed


keywords:
QGIS
Biodiversity
Phylogeography
Biogeography
Parallel Computing
WPS

uk: Комп'ютерні науки

description: Phylogenetic data from the "Tree of Life" have explicit spatial and temporal components when paired with species distribution and ecological data for testing contributions to biological community assembly at different geographic scales of species interaction. Important questions in biology about the degree of niche suitability and whether the history of a community's assembly for an area can affect whether the species in a community are more or less phylogenetically related can be answered using several different spatially-filtered measures of phylogenetic diversity. Phylogenetic analyses which support the description of ecological processes are usually achieved in a handful of software libraries that are narrowly focused on a single set of tasks. Very few applications scale to large datasets and most do not have an explicit spatial component without relying on external visualization packages. This prompted us to explore bringing phylogenetic data into an open-source GIS environment. The Lifemapper Macroecology/Range & Diversity QGIS plug-in is a custom plug-in which we use to calculate and map biodiversity indices that describe range-diversity relationships derived from large multi-species datasets. We describe extensions to that plug-in which expand the Lifemapper set of ecological tools to link phylogenies to spatially-derived 'diversity field' statistics that describe the phylogenetic composition of natural communities.

uk: вхід без авторизації

name: Adding Phylogenies to QGIS and Lifemapper for Evolutionary Studies of Species Diversity


keywords:
OGC WPS
Geoprocessing
Performance Evaluation
Benchmark

uk: Комп'ютерні науки

description: In this presentation, I illustrate, and discuss initial results from a quantitative analysis of the performance of WPS servers. To do so, two test scenarios were used to measure response time, response size, throughput, and failure rate of five WPS servers including 52¡North, Deegree, GeoServer, PyWPS, and Zoo. I also assess each WPS server in terms of qualitative metrics such as software architecture, perceived ease of use, flexibility of deployment, and quality of documentation. A case study addressing accessibility assessment is used to evaluate the relative advantages and disadvantages of each implementation, and point to challenges experienced while working with these WPS servers.

uk: вхід без авторизації

name: Evaluation of Web Processing Service Frameworks


Seven ways of injecting Python to QGIS

keywords: QGIS Python fun

uk: Комп'ютерні науки

description: This presentation will enlighten the novice Python QGIS user with different ways of running Python code in QGIS without the need of building a QGIS Python plugin. Any QGIS user could start writing small Python scripts for automating, customizing and extending QGIS, making their daily workflow an easier and more fun task to complete.-Python through the QGIS Python Console and Script editor: This would be the most obvious place for PyQGIS newcomers. The console and editor comes with syntax highlighting, autocomplete and easy integration to QGIS.-Scriptrunner: A handy plugin for running Python scripts when objects needs to be instantiated.-Extending the Expression engine: Using a startup.py in your .qgis2 Python folder with a @qgsfunction(0, "Python") attribute. An example is shown adding the name of the current user, to a label on a Print Composer composition.-Run script on project event open, close and save: You may want to validate if a certain table is open, and notify the user if it is not, when opening or saving a QGIS project.-Python in QGIS Actions: Extend your QGIS actions with Python code. -Python Init function: A powerful feature in QGIS when creating new features. You can validate and programmatically edit your attribute input. One can also process the newly digitalized geometry. An example is shown creating rectangular oil tanks with predefined dimension.-Processing Framework: Scripting methods from the Processing Framework. Useful when you need to loop or run a batch of commands from the Processing Framework.

uk: вхід без авторизації


Open for Business Down Under

keywords: Customers Engagement Business

uk: Комп'ютерні науки

description: The open source geospatial community tends to focus heavily on technical solutions, but how do we ensure that we are engaging customers on the benefits of open source solutions or that our customers even properly understand what open source means to their business?Can we engage our customers to encourage their projects to be contributed back to the open source core, can we get them interested in supporting core projects, do they even care that they are using an open source solution at all?Customers are used to proprietary licensing models and have an inherent understanding of them, but many don't understand open source models beyond the superficial 'it's free'. Convincing clients to build on open source is relatively easy, convincing them to support open source projects that they have leveraged is often more difficult.This talk discusses our experiences and challenges in Australia with collaborating with our clients on open source projects, particularly for customers with a limited technical background.

uk: вхід без авторизації


keywords:
GRASS GIS
geospatial
analysis
HPC
cluster
image processing
vector
raster
voxel
time series
visualization
Python
WPS

uk: Комп'ютерні науки

description: GRASS GIS (Geographic Resources Analysis Support System) looks back to the longest development history in the FOSS4G community. Having been available for 30 years, a lot of innovation has been put into the new GRASS GIS 7 release. After six years of development it offers a lot of new functionality, e.g. enhanced vector network analysis, voxel processing, a completely new engine for massive time series management, an animation tool for raster and vector map time series, a new graphic image classification tool, a "map swiper" for interactive maps comparison, and major improvements for massive data analysis (see also http://grass.osgeo.org/grass7/). The development was driven by the rapidly increasing demand for robust and modern free analysis tools, especially in terms of massive spatial data processing and processing on high-performance computing systems. With respect to GRASS GIS 6.4 more than 10,000 source code changes have since been made.GRASS GIS 7 provides a new powerful Python interface that allows users to easily create new applications that are powerful and efficient. The topological vector library has been improved in terms of accuracy, processing speed, and support for large files. Furthermore, projections of planets other than Earth are now supported as well. Many modules have been significantly optimized in terms of speed even by orders of magnitude. The presentation will showcase the new features along with real-world examples and the integration with QGIS, gvSIG CE, R statistics, and the ZOO WPS engine.

uk: вхід без авторизації

name: GRASS GIS 7: your reliable geospatial number cruncher


keywords:
FOSS4G
Linux
academic
system installation
web server

uk: Комп'ютерні науки

description: The presentation will examine the selection, installation, and the current and planned use of a CentOSÐbased system running FOSS4G to support student education, research, and projects with state and local organizations. A system was designed to foster collaborative work between an educational institution and the community. Specifically, it is being used to better understand and enhance distribution systems associated with local agriculture producers and consumers. Part of this work is the development of a web-based system to process and serve geospatial information in an effort to improve communication between food producers and consumers, i.e. restaurants, farmers markets, and Community Supported Agriculture (CSA). This presentation will demonstrate how the system was built to:¥ Continue investigation of the general principles and approaches for designing food distribution systems to enhance local food networks¥ Provide access to a web-based system for geospatial computations and data management¥ Serve as a resource for the community to access information in support of the broader goals of the CEDS research center¥ Act as an map server¥ Act as the server supporting deployment of geo-aware mobile phone applications implemented by the department to enhance the learning process on field trips and other field work¥ Collect, process, store, and serve data from environmental sensors to support education in weather, climate, and the environment

uk: вхід без авторизації

name: A FOSS4G-Based Geo Connection System for Education and Research


keywords:
modular software
framework
architecture
GIS
remote sensing
plug-in
QT

uk: Комп'ютерні науки

description: The Integrated Land and Water Information System (ILWIS, http://52north.org/communities/ilwis/) is a GIS and remote sensing software integrating raster, vector and thematic data set processing into a desktop application. ILWIS is hosted under the umbrella of the 52North project and managed and maintained by ITC, University of Twente, The Netherlands. ILWIS is currently subject to a significant refactoring and modularization process referred to as ILWIS Next Generation (ILWIS NG). This will increase attractiveness for developers and lowers their entry requirements. It will provide a sustainable code base for the next decade and allows for integration with other open source software. Beneficiaries are researchers, educators and project executers. It will allow them to use GIS and remote sensing functionality in an easy and interoperable manner on a single desktop and in a web and/or mobile environment in order to integrate their work with others in a standardized way. Based on requirements analysis meetings with a small team at ITC, an architecture was created to host the modular components of ILWIS NG. The implementation of this architecture was started in 2013 and comprised the creation of the QT-based core software centered around a plug-in concept which supports connectors. This supports different data formats and interfaces to other software packages. As first extensions, a Python API and WFS have been developed and data connectors to PostgreSQL and OGC's SWE are underway, as well as a flexible mobile app environment, making it possible to configure lightweight GIS apps within a very short time. The presentation will embark upon the justification of starting the software refactoring and will provide an overview of the new modular architecture, giving insight into the design choices which were made. The presentation will also expose the GIS and image processing functionalities within ILWIS and how they are made available in the new interoperable setup indicating the libraries and standards on which they are based. Examples will be given on the many projects in which ITC has used ILWIS already and the potential use of ILWIS Next Generation in combination with OSGEO projects in the future.

uk: вхід без авторизації

name: ILWIS, the next generation tool framework for GIS and remote sensing


keywords:
Wikipedia
data processing
mashups
National Register of Historic Places

uk: Комп'ютерні науки

description: A large fraction of Wikipedia's millions of articles include geographic references. This makes Wikipedia a potentially rich source for themed, curated geographic datasets. But the free form nature of Wikipedia's markup language presents some technical challenges. I'll walk through the Wikipedia API, show how to get to the various places where spatial info might be found, and show some blind alleys I've followed. Examples are from a project that uses Wikipedia to enhance a map-based iOS app of some US National Park Service data.

uk: вхід без авторизації

name: Extracting geographic data from Wikipedia


keywords: foss4g oer curriculum course class qgis training education learning

uk: Комп'ютерні науки

description: Where are GIS educators to go when they need educational material to teach FOSS4G in their academic programs? While commercial vendors, like Esri through their Virtual Campus, have a wealth of training material available, there are very limited resources for educators seeking to teach FOSS4G. The new QGIS Academy program is the first national effort to provide this much need academic infrastructure. The Academy has produced a set of five full GIS courses, based on the latest version of QGIS, to offer educators and others for free under the Creative Commons CC BY license. These courses have been under development since 2010 and use the US Department of Labor Geospatial Technology Competency Model (GTCM) as the basis for their scope and sequence. This presentation will demonstrate the courses and discuss their development and future plans.

uk: вхід без авторизації

name: Educating 21st Century Geospatial Technology Industry Workers with Open Source Software


keywords:
mobile
adaptive web maps
situated learning
responsive design

uk: Комп'ютерні науки

description: Mobile device technology is being introduced into educational settings and is likely to become widespread as an instructional medium in the coming years. As of 2013, nearly three-fourths of American college students own a smartphone, while four in ten own a tablet, and a majority of students believe that mobile devices can make their education more effective. There is tremendous opportunity to harness these devices for situated learning, or lessons that take place in a real-world context, through the use of mobile-ready geoweb technologies. Adaptive web maps can be developed to guide students to important places—either virtually or physically—and facilitate landmark interpretation. This presentation will demonstrate a situated learning module developed using open source geoweb technologies for an International Studies course at the University of Wisconsin-Madison. The purpose of the module is to "make the familiar strange" to students in the Madison landscape, guiding them to historic landmarks and pairing those places with maps, images, and narration to explore the course of economic development in the U.S. The web application makes use of the principles of responsive web design to adapt to mobile or desktop devices, altering the map interface and modes of content delivery to fit the user's context. The mobile and desktop versions will each be evaluated to determine what adaptations effectively increased usability and whether situated viewing of the map on a mobile device influenced learning outcomes. A review of the application development and evaluation processes and results will be accompanied by a summary of lessons learned about how mobile mapping applications can adapt to their users and surroundings.

uk: вхід без авторизації

name: A Mobile Situated Learning Module using Open Source Geoweb Technology


keywords:
Open Street Map
geometry
mathematical optimization

uk: Комп'ютерні науки

description: Importing new/updated geometry into large dataset like Open Street Map is tricky business. Features represented in both need to be detected and merged. Often times editors are asked to completely "retrace" over updated maps as automated methods are unreliable.While a 100% accurate merge is impossible, it is possible to auto create a best guess and let the user refine from there, eliminating as many manual, tedious steps as possible.Slide is a tool designed to solve this problem and works by iteratively refining roads, trails and other complex geometries to match another dataset, where the features are correctly mapped. In a single click one geometry is "slided" to the other, eliminating hundreds of tedious clicks.The form of the new dataset is flexible. It could be an updated representation of roads such as the new TIGER database, a scanned historical paper map, or a large collection of GPS data points like the 250+ billion made available by Strava, a fitness tracking website.Overall, Slide is designed to leverage what we already know, collected in various datasets, to speed map tracing. Map editors should be focusing on higher level challenges and not just retracing over another dataset.

uk: вхід без авторизації

name: "Sliding" datasets together for more automated map tracing


TeachOSM

keywords:
Humanitarian
Disaster Response
OSM
Service Learning
Education

uk: Комп'ютерні науки

description: For the past three years Nuala Cowan & Richard Hinton of the Geography department at the George Washington University have integrated the open source mapping platform, OpenStreetMap into the curriculum for their introductory undergraduate Geographical Information Systems (GIS) & Cartography classes; traditionally the domain of desktop, proprietary software. Professors Cowan and Hinton have sought to expand the traditional curriculum, and expose students to various different open source software's, web based platforms, and data collection initiatives, specifically in a service-learning environment.In collaboration with both local & international partners (American Red Cross 2012, USAID 2014), GW Geography students have used high-resolution satellite imagery to trace road and building infrastructure (Columbia & Indonesia 2012, Kathmandu 2013, Philippines & Zimbabwe 2014), data that is subsequently used to support disaster preparedness efforts.Initiated by a small innovative teaching grant we have started work with OpenStreetMap foundation to develop a web site that would allow other instructors to replicate our mapping assignment specific to their particular discipline and curricular needs. This site is called TeachOSM.org. Our funding has since been matched by the World Bank, USAID (OTI and The Geocenter), the State Department and The American Red Cross. With this funding the scope of the project has been expanded to include the redevelopment of the OSM Tasking manager. The OSM Tasking Manager is a custom-mapping tool that facilitates collaborative mapping projects with a humanitarian focus. The purpose of the tool is to divide a mapping job into individual smaller tasks for group work, while guaranteeing coverage and minimizing overlap. New additions to the Tasking Manager will allow instructors to assign cells to individual students for both data creation, and data validation roles.Mapping has applicability across many fields and communities of interest, and can used to document, archive, plan and contribute to both local and international initiatives.Open source mapping modules and assignments are also a unique way to integrate service-learning strategies in course curriculum, while exposing students to new and exciting technological platforms. The experience teaches civic responsibility and the value of collaborative efforts in the global community.The collaborative mapping initiatives at GWU Geography have been exclusively disaster related to date, as this coincides with the research interests of the faculty involved. We believe this instructional module/assignment is applicable to many disciplines and teaching scenarios, and the objective of the TeachOSM platform is to open that possibility to these other fields, in a comprehensive user friendly way.

uk: вхід без авторизації


keywords:
Automated landcover mapping
machine learning
change detection
Landsat

uk: Комп'ютерні науки

description: Recent land cover maps are essential to spatial planning and assessment by non-/governmental agencies. The current land cover mapping methods employed in South Africa are slow and expensive and the most recent national land cover map dates back to 2000. The CSIR is developing an automated land-cover mapping system for the South African region. This system uses widely available Landsat satellite image time series data, together with supervised machine learning, change detection, and image preprocessing techniques. In this presentation the implementation of this end-to-end system will be addressed. Specifically, we will discuss the use of an open source random forest implementation (Weka), a change detection algorithm (IRMAD), as well as tools used for satellite image preprocessing (Web enabled Landsat data, fmask cloud masking) and on-line validation tools. Furthermore the approach used in optimising automatic land-cover production accuracy for operational use will be discussed.

uk: вхід без авторизації

name: An automated classification and change detection system for rapid update of land-cover maps of South Africa using Landsat data.


State of QGIS Server

keywords: QGIS WMS WFS OGC

uk: Комп'ютерні науки

description: QGIS server continues to grow with an active community and expanding user base. Besides new styling features shared with QGIS desktop, new services have been added continuously. OGC WFS (Web Feature Service) and WFS-T were the first additions to WMS, recently followed by an OGC WCS (Web Coverage Service) implementation. The map service itself also got several additions besides the GetPrint request for delivering PDF outputs made with QGIS print composer. Performance and scalabilty has been steadily improved and brought to the same level as other established map servers. PDF outputs got recently support for dynamic texts and images (e.g. QR codes) and server-side GeoJSON rendering allowing redlining implementations.

uk: вхід без авторизації


keywords:
Open Data
Catalogue
CSW
OGC
pycsw
CKAN
Geospatial

uk: Комп'ютерні науки

description: This presentation will discuss the implementation of the CSW endpoint using pycsw within the Data.gov infrastructure (architecture/enhancements/testing/deployment) and CKAN, which powers Data.gov.CSW (Catalogue Service for the Web) is an OGC (Open Geospatial Consortium) specification that defines common interfaces to discover, browse, and query metadata about data, services, and other potential resources.Data.gov provides access to its catalog via the CSW standard for both first-order and all metadata for harvested data, services and applications. Data may be referenced from federal, state, local, tribal, academic, commercial, or non-profit organizations. The first-order CSW endpoint provides collection level filtering of all metadata records. The all metadata CSW endpoint provides all levels of metadata at varying levels of granularity.Any client supporting CSW (desktop, GIS, web application, client library, etc.) can integrate the Data.gov CSW endpoints.

uk: вхід без авторизації

name: Data.gov/Geoplatform.gov CSW implementation through pycsw and CKAN integration


Fixing GIS Data Discovery

keywords:
discovery
data
open-data
user experience
accessibility

uk: Комп'ютерні науки

description: Discovery of GIS data is broken. It is overly complicated and incomplete. Organizations spend time and money on creation and acquisition of data, yet it sits on hard drives, dvd's, and shelves without a straightforward way for others to discover it. Discovery tools that do exist have usability issues which alienate users and prevent wide adoption. Too often, data discovery is an afterthought, grafted onto tools that have been designed for analysis, or treated as one feature among many in a map portal. Thus these tools attempt to serve every possible user need and in the process become unusable. Simply put, we need an application which enables discovery of GIS data with an emphasis on user experience, integrates seamlessly with other tools, and streamlines the use and organization of geospatial data.We present GeoBlacklight, a collaboratively designed and developed open source software focused on discovery use cases. The project builds on existing, widely adopted open source projects. GeoBlacklight fills the gap in discovery tools for geospatial data by providing a simple, yet powerful intuitive interface. To reach this goal, Stanford University embarked upon a comprehensive design process. Our process includes an environmental scan, stakeholder interviews, user interviews, inter-institutional collaboration, and rapid prototyping. We will present the user personas that have been distilled from our interviews, the user stories and feature prioritization process these inform, and prototypes of the software we have developed so far, as well as plans for future development.

uk: вхід без авторизації


Web and mobile enterprise applications

keywords: web mobile enterprise offline PostGIS GeoServer Leaflet

uk: Комп'ютерні науки

description: This presentation will discuss enterprise web mapping and mobile applications that we've been developing for large utilities and communications companies, based on a number of open source geospatial components, including PostGIS, MapFish, GeoServer and Leaflet. It will discuss development of offline mobile applications using both PhoneGap to compile to native applications on Android, iOS and Windows, using a SpatiaLite database, and also use of HTML5 offline storage. We will discuss ideas on how to create extremely easy to use but still powerful applications, using approaches inspired by consumer web mapping sites rather than traditional GIS. The presentation will not be deeply technical but will include material of interest to developers as well as end users and managers.

uk: вхід без авторизації


keywords: mobile openlayers geoserver bootstrap android rogue cordova phonegap openstreetmap

uk: Комп'ютерні науки

description: Developing an application with the capability to view, collect, and edit geospatial data in connected, limited connectivity, and disconnected environments was a necessity for the ROGUE project. The first version of the application was developed using Cordova/PhoneGap, with everything written in html, css, and javascript, using OpenLayers 2.13 as the mapping library, and jQuery Mobile for the UI. Due to various UI concerns, we decided to implement another version utilizing as much of the native Android API as possible. We also developed a third mobile application using OpenLayers 3 as the mapping library, and Bootstrap for the UI. This talk will cover our experience developing these three geospatial mobile applications, specifically the differences between the approaches we took and any challenges that we overcame.

uk: вхід без авторизації

name: Case Study: Developing OpenLayers-based Mobile Applications


keywords:
QGIS
Desktop GIS
WMS
WFS
OGC

uk: Комп'ютерні науки

description: Following the long awaited QGIS 2 release, announced at FOSS4G 2013 in Nottingham, the project decided to switch to a regular release cycle with three versions per year. QGIS 2.2 was the first release in this cycle and already packed with many new features like 1:n relations, gradient fills, native DXF export and NTv2 datum transformations to name a few. QGIS 2.4, released in June, has one major extension in its core: multithreaded rendering. Originally developed as a Google Summer of Code project, it makes a big difference in the responsiveness of QGIS desktop.This talk shows a selection of the latest features and gives an outlook what's in the works for QGIS 2.6. Some interesting plugins and other news from the community will keep you up to date with the high pace of this OSGeo project.

uk: вхід без авторизації

name: From Nottingham to PDX: QGIS 2014 roundup


Glob3 Mobile (Mobile Map Tools)

keywords:
Mobile
iOS
Android
API
multi platform
map component
3D
native

uk: Комп'ютерні науки

description: Glob3 Mobile is an API for the development of native map applications on mobile devices.The main capability of this library is the Multiplatform approach, it have the very same API in all environments thanks to coding translation.Developing with Glob3 Mobile you can save time and resources when you face a mobile development having all advantages of native development (Performance, UI, Access to disk, sensors, etc) and the simplicity of an API thought for GIS developers.During 2013-2014 G3M has been growing in capabilities and is now a solution to face the development of any map application on any device.In this presentation We will explain the architecture and the main capabilities of this library and we will show some examples and demos and use cases with the API working.Glob3 Mobile has been developed thinking in the usability and the UI of mobile devices.Currently Glob3 Mobile is working in the next platforms:* iOS* Android* Google Glass* html5-webgland it is planned to add others like Windows 8 or Java Desktop.Currently also g3m has been used as offline AR engine for wearable devices.The capabilities list is huge but the main are:* Raster data* Vectorial data* Point Clouds* 3D models (Buildings, cities, vehicles, ...)* 4D Data* Real Time* Simbology* Offline - Online -> Cache Handling* 3D- 2D - 2,5D views* Scenarios* Animations* Cameras* TasksDuring 2014 Glob3 Mobile will become part of Location Tech (Eclipse Foundation) and will change the name and license:Glob3 Mobile --> Mobile Map toolsBSD -> EPLA different use cases of Mobile Map Tools.Vazz: http://www.vazz.tv/start Galileo: http://galileo.glob3mobile.com http://galileo.mobilemaptools.comAero Glasses: http://glass.aero/

uk: вхід без авторизації

name: Open Source Geospatial Foundation (OSGeo)


Compositing a Global Mosaic

keywords: cubesat mosaic global

uk: Комп'ютерні науки

description: Planet Labs is collecting images from dozens of satellites in order to build timely global cloud free mosaics at around 5 meter resolution. I will review the software components we use to accomplish this, as well as discussing challenges and solutions in this process. With luck I will be in a position to show off our global mosaics, and offer Planet Labs open source compositor software.

uk: вхід без авторизації


keywords: data geodata catalog search

uk: Комп'ютерні науки

description: You can't make a map without data. A wealth of free and publicly-accessible geospatial data exists on thousands of websites scattered around the world, just waiting to be found and used. But finding the right data for a specific map or analysis requires the knowledge of what geodata websites are out there, and what types of data they each contain. Searching the web can turn up webpages that contain sprawling lists of geodata websites, but such lists are not easily browseable, and are often out of date.Geolode.org is a newly-launched lightweight catalog of geodata websites around the world, searchable and browseable by location, topic, and other tags, so that searchers can quickly focus on the most relevant websites for their geodata needs. An API also provides open access to the catalog's records in JSON format.Geolode's inventory is the collaborative product of a group of librarians and other researchers with many years of experience searching for a wide range of data. We'll talk about how Geolode works, as well as strategies for keeping Geolode up to date, such as harvesting links from all those sprawling lists, and monitoring Twitter for reports of new geodata resources.

uk: вхід без авторизації

name: Geolode: the motherlode of geospatial data sources


keywords:
snow
science
remote sensing
lidar
point clouds
open source
decision support

uk: Комп'ютерні науки

description: JPL's Airborne Snow Observatory is an integrated imaging spectrometer and scanning LIDAR for measuring mountain snow albedo, snow depth/snow water equivalent, and ice height (once exposed), led by PI Dr. Tom Painter. The team recently wrapped our second "Snow On" campaign where over a course of 3 months, we flew the Tuolumne River Basin, Sierra Nevada, California above the O'Shaughnessy Dam of the Hetch Hetchy reservoir; focusing initial on the Tuolumne, and then moving to weekly flights over the Uncompahgre Basin, Colorado.To meet the needs of its customers including Water Resource managers who are keenly interested in Snow melt, the ASO team had to develop and end to end 24 hour latency capability for processing spectrometer and LIDAR data from Level 0 to Level 4 products. Fondly referring to these processing campaigns as "rodeos" the team rapidly constructed a Big Data open source data processing system at minimal cost and risk that not only met our processing demands, but taught the entire team many lessons about remote sensing of snow and dust properties, algorithm integration, the relationship between computer scientists, and snow hydrologist; flight and engineering teams, geographers, and most importantly lessons about camaraderie that will engender highly innovative and rapid data systems development, and quality science products for years to come.Chris Mattmann, Paul Ramirez, and Cameron Goodale for the ASO project will present this talk and will detail the story of the Compute processing capability on behalf of the larger team, highlighting contributions of its key members along the way. We will cover the blending of open source technologies and proprietary software packages that have helped us attain our goals and discuss areas that we are actively investigating to expand our use of open source.

uk: вхід без авторизації

name: 24-hr Latency End to End Data Processing Using Open Source Technologies for the Airborne Snow Observatory


keywords: PostGIS MongoDB Lucene Leaflet OpenStreetMap Flask Sinatra Restify JaxRS Silex

uk: Комп'ютерні науки

description: Learn how to build quick and easy open source mapping solutions using several different languages and datastores. Well start by selecting our source data, and a database to house it. Then, we'll pick language and a simple microframework to power a basic REST API. Finally, we add Leaflet Maps for user-facing data visualization and controls. Feel free to bring a laptop and follow along to launch your very own mapping application during this short talk.

uk: вхід без авторизації

name: Choose your own Adventure - Open Source Spatial on OpenShift


Creating Custom HTML Elements for Maps

keywords:
web
map
javascript
leaflet
angularjs
web components
html

uk: Комп'ютерні науки

description: Maps appear all over the web but the core structural language of the web—HTML—does not natively support them. Adding dynamic or interactive maps to a web page or web application can involve complex JavaScript code that is difficult to reuse between contexts.Web developers are starting to have opportunities to change this. Some newer web development frameworks are designed to support HTML page elements with custom attributes as a way of defining behaviors. These frameworks anticipate web components, an emerging standard for creating fully custom HTML tags. Custom attributes and elements make it possible to effectively expand HTML to include `{my-map}...{/my-map}`.This talk will demonstrate how to use existing JavaScript map libraries to create flexible, reusable maps that take the form of HTML elements with custom attributes. Looking forward, we'll explore how web components let us take this technique even further and create true custom HTML elements for maps and the display of other geo data.Crafting custom HTML map elements doesn't just mean making maps a first-class citizen of web page markup, it offers a whole new way to create and share web-based mapping tools between applications and organizations.

uk: вхід без авторизації


GeoExt2 Ð Past, Present and Future

keywords: webmapping RIA OpenLayers Leaflet ExtJs

uk: Комп'ютерні науки

description: GeoExt is Open Source and enables building desktop-like GIS applications through the web. It is a JavaScript framework that combines the GIS functionality of OpenLayers with the user interface savvy of the ExtJS library provided by Sencha.Version 2 of GeoExt (http://geoext.github.io/geoext2/, released in October 2013) is the successor to the GeoExt 1.x-series and is built atop the newest official installments of its base libraries; OpenLayers 2.13.1 and ExtJS 4.2.1.The talk of two GeoExt core developers and members of the PSC (Project Steering Committee) will shortly present the history of the project with a focus on how an international code sprint back in May 2012 lay the foundations of the 2.x-series of GeoExt. The current version will be presented and and we'll discuss new features and important changes for users of the framework. Especially the following aspects will be portrayed:- Usage of the new classes- Compatibility with the single-file build tool of Sencha- Integration into the ExtJS MVC (Model-View-Controller) architecture- Better API-documentation- Easier theming of ExtJS/GeoExt applicationsAs both of the base libraries are about to release new major versions Ð OpenLayers 3 and ExtJS 5 are very near to be being released in stable versions Ð the last focus of the talk will be the future development of the GeoExt 2 framework.The project has already pre-evaluated the possibility of supporting more than just one mapping library, so a future version of GeoExt might bring support for OpenLayers 3 and/or Leaflet and is likely being built on top of ExtJS 5.

uk: вхід без авторизації


keywords: mapserver tiles wms wmts mapcache tms mbtiles

uk: Комп'ютерні науки

description: MapCache is the MapServer project's implementation of a tile caching server. It aims to be simple to install and configure, to be (very) fast (written in C and running as a native module under apache or nginx, or as a standalone fastcgi instance), and to be capable (services WMTS, googlemaps, virtualearth, KML, TMS, WMS). When acting as a WMS server, it will also respond to untiled GetMap requests, by dynamically merging multiple layers into a single image, and multiple tiles into an arbitrary image size. Multiple cache backends are included, allowing tiles to be stored and retrieved from file based databases (sqlite, mbtiles, berkeley-db), memcached instances, cloud REST containers (S3, Azure, Google Cloud Storage), or even directly from tiled TIFF files. Support of dimensions allows storing multiple versions of a tileset (e.g. one per customer), and time based requests can be dynamically served by interpreting and reassembling entries matching the requested time interval. MapCache can also be used to transparently speedup existing WMS instances, by intercepting getmap requests that can be served by tiles, and proxying all other requests to the original WMS server. Along with an overview of MapCache's functionalities, this presentation will also address real-world usecases and recommended configurations.

uk: вхід без авторизації

name: MapCache: Overview of MapServer's tile caching server


keywords: mapserver wms wfs wcs

uk: Комп'ютерні науки

description: This session will begin with a status update for the MapServer project - current and future directions. Focus will then shift to the main features and enhancements coming in MapServer 7.0 including dynamic heatmaps, WFS 2.0 support, UTFGrid generation and more. Finally we'll finish with a discussion of contribution opportunities for interested developers and users.This a great opportunity to chat with the members of the MapServer project team!

uk: вхід без авторизації

name: MapServer Project Update - Introducing Version 7.0


MapServer #ProTips

keywords:
MapServer
power user
web map

uk: Комп'ютерні науки

description: MapServer is a fast, flexible and extremely powerful tool for creating dynamic maps for the Web. Underneath the hood, MapServer offers many powerful and advanced features that many users never dig into, and new features are being added constantly. Come learn about some of the more advanced features of MapServer, from heat maps to 3D WFS services to exporting data to GDAL file formats to very complex symbology and labeling. Learn simple and advanced use cases and debugging techniques for some of these advanced features from two presenters with over 20 years combined experience of using MapServer. A live MapServer instance will be used during this presentation (yes we are crazy!).

uk: вхід без авторизації


Exposing NASA's Earth Observations

keywords:
data visualization
satellite imagery
tiled mapping
web services

uk: Комп'ютерні науки

description: The satellites which comprise NASA's Earth Observing System (EOS) have a long history of capturing rich datasets with global coverage over extended periods of time. While the data itself is rich (and open!), it can be a daunting task for uninitiated users to find suitable datasets, learn the data format, and subsequently find interesting phenomena. Even for those who are familiar with the data, it can be a time consuming process. But thanks to the proliferation and maturity of open source geospatial software, NASA has been able to build an imagery ingest pipeline, open source tiled imagery server, and open source, web-based mapping client to encourage exploration and discovery of NASA datasets. This talk will describe how NASA is building these capabilities through the Global Imagery Browse Services (GIBS) and Worldview client, demonstrate how others are building upon them, and show what it takes to integrate NASA imagery into clients using the GIBS API.

uk: вхід без авторизації


keywords:
photogrammetry
remote sensing
3D
DigitalGlobe
WorldView

uk: Комп'ютерні науки

description: We have adapted the NASA Ames Stereo Pipeline (ASP) - a suite of automated, open source, command-line photogrammetry tools originally developed for NASA planetary missions - to process high-resolution stereo satellite imagery of the Earth. These tools are multithreaded, memory efficient and scalable, which enables processing of "big image data" (e.g., 16-bit panchromatic WorldView images with dimensions ~36000 x 460000 px). We have deployed this pipeline on the NASA Pleiades supercomputer to generate ~2 m/px digital elevation models (DEMs) and ~0.5 m/px orthoimages for thousands of WorldView-1/2 along-track stereopairs. New ASP tools mitigate systematic DEM artifacts and allow for automated, a posteriori DEM coregistration using iterative closest point algorithms. When existing control data are available (e.g. LiDAR, GPS), automated alignment routines offer sub-meter horizontal and vertical DEM accuracy.Our research applications focus on ice sheet dynamics in Greenland/Antarctica and ice/snow evolution in the Pacific Northwest. We have developed an additional collection of tools for DEM analysis, including utilities to produce maps of 3D surface displacement (velocity) vectors and eulerian/lagrangian elevation change. We present the following case studies to highlight the capabilities of these data and our open source workflow:-A 57+ DEM timeseries from 2008-2013 for Greenland's most dynamic outlet glacier, revealing >40 m/yr interannual thinning and large seasonal variability-Annual DEM mosaics that reveal the ongoing evolution of West Antarctica's "weak underbelly", an area roughly the size of New Mexico-Repeat DEM timeseries for Mt. St. Helen's showing volcanic dome growth, glacier advance, canopy height, fluvial erosion/deposition, and landslides.For many applications, DEMs derived from high-resolution satellite imagery are comparable to those derived from airborne LiDAR data, with the advantage of global, on-demand tasking capabilities and reduced costs. Archived commercial stereo imagery is available at no cost to federal employees or federally-funded researchers, and the tools/methods highlighted here offer an automated, open source alternative to traditional, GUI-based, commercial photogrammetry software packages. https://github.com/NeoGeographyToolkit/StereoPipeline

uk: вхід без авторизації

name: An Automated, Open Source Pipeline for Mass Production of 2 m/px DEMs from Commercial Stereo Imagery


keywords:
GIS
FOSS
Brazil
IBAMA
QGIS
PostGIS
pgRouting
OSM
Remote Sensing
Biomes

uk: Комп'ютерні науки

description: This proposition is a case study who aims to demonstrate and discuss the adoption and development of FOSS GIS tools and open standards at Brazilian Institute of Environment and Renewable Natural Resources (IBAMA) in the Remote Sensing Center (RSC) who is responsible for collecting, analisys and distributing of GIS data of brazilian biomes (Amaz™nia, Cerrado, Mata Atl‰ntica, Caatinga, Pampa, Pantanal and Manguezal), using FOSS tools like Quantum GIS, PostgreSQL/PostGIS, GeoServer, pgRouting, OGR/GDAL, Leaflet.JS, OSM and others.In recent years FOSS GIS has become an important part of brazilian enviromental conservancy system.Working with FOSS and open standards, the Remote Sensing Center at IBAMA is developing tools to help conservation of the environment and brazilian forests. Systems like the Emergency Environmental System (EES), which helps to identify and warn about environmental disasters.Other systems, in development at Remote Sensing Center at IBAMA, using a large open database of geospatial data, shows data on deforestation in the major biomes in Brazil in real time.In 2014, the Remote Sensing Center team began collaborating with others projects, giving back contributions to the FOSS community. With source code, bug reports, translations, and mostly with free and open data about brazilian enviroment and Natural Resources.

uk: вхід без авторизації

name: Case Study of Brazilian Institute of Environment and Renewable Natural Resources with FOSS GIS


keywords:
Usability
User-centered Design
Web-GIS
Cartographic Interaction

uk: Комп'ютерні науки

description: This presentation will discuss the design of interactive raster masking capability for a web-based geographic information system (Web GIS) from the perspective of user-centered design. A case study will be presented by analyzing and discussing specific aspects of the user-developer dialog within the context of the software development life cycle. The presented case study will take the audience through the development of an open-source Web GIS software architecture (MapServer, PostGIS and OpenLayers) with particular focus on how the masking functionality was designed and implemented. Software engineering techniques informed by iterative cognitive walkthrough allowed for a dialog between Web GIS production and consumption that led to a more usable and useful cartographic interface. Key findings from this case study will be presented.

uk: вхід без авторизації

name: A User-centered Design for Interactive Masking Capability within Web GIS


keywords:
Open Source
Web GIS
Online Maps
Online Education
Open Courseware
Web Services

uk: Комп'ютерні науки

description: Free and open source software (FOSS) for GIS continues to increase in functionality and usability, and offers a flexible and economic option for organization that want to create online maps; however, beginners face a broad array of software choices and may not know which FOSS products and packages to deploy in each tier of the web map architecture. Compounding the problem is the fact that much documentation for FOSS GIS is fragmented among these tier-specific products and does not provide end-to-end workflows for designing and publishing cartographic web services and assembling them into an online map product. In response to these needs, The Pennsylvania State University has introduced an open online course entitled Open Web Mapping. The course lessons explain the theory and architecture of web mapping, while walking beginners through the process of deploying online maps with FOSS. Software such as QGIS, GDAL, GeoServer, TileMill, and OpenLayers is introduced as students start from the data processing stage and work their way to the final display of interactive web service layers in a browser-based map. The course is intended as an open resource for the entire FOSS community; therefore, the lesson materials are freely accessible through a Creative Commons license.

uk: вхід без авторизації

name: Open Web Mapping: An educational resource for creating online maps using free and open source software


An Easy Web Mapping Framework

keywords: OpenLayers web mapping Javascript HTML CSS

uk: Комп'ютерні науки

description: Browser technologies such as HTML, JavaScript and CSS have matured to a point where they can be used to develop sophisticated applications. Spatial JavaScript libraries such as OpenLayers, JSTS and D3 supply great capability for implementing mapping and graphing applications. Complex geoprocessing functions such as geocoding, routing and surface analysis can now be accessed easily via REST API's.These technologies provide a powerful set of tools for building the next generation of client-side web mapping applications. But this tool set is complex, and requires significant effort in UI design to make it accessible to users. The BC Government Natural Resource Sector (NRS) deploys over a hundred web mapping applications. Implementing these applications using one-off designs would be prohibitively costly in development, support and training. This talk discusses the development of a Common Web Mapping framework based on OpenLayers 2, which uses the power of modern browser technology to provide a fast and easy way to build web mapping applications.

uk: вхід без авторизації


keywords: quadcopter civic hacking drone sfm

uk: Комп'ютерні науки

description: Quadcopter - Phantom FC40 ($500). Camera - Canon PowerShot ELPH 130 IS 16.0 MP ($110). Opportunity to engage your local community to produce open data - priceless.Let's get to the point. Let's talk about hardware and software to get out there and actually map some stuff with a quadcopter. This is the story of my adventures hacking with a Phantom quadcopter over the last 10 months to make local maps... and of course have fun. The only rules... it has to be cheap and the software has to be open source.We will go through the hardware, including purchasing, setting up, and flying the quadcopter. The camera is hacked with CHDK and strapped on the quadcopter with some velcro to a vibration dampener cut up with a dremel tool. The processing software is a pain to install, but we will talk through it including software options, how to get your processing off loaded to your video card GPU, and how we as a community can make all this easier in the future. Finally, we will look at what you can actually make... including mosaics, 3d models, and DEM's of your local community.Quadcopters are cheap, fun, and amazing for engaging your local community to produce open data. Let's do it!

uk: вхід без авторизації

name: Quadcopter GIS for less than $700 - Hardware and software to map your local community


GeoMOOSE at 10 Years

keywords:
GeoMOOSE
Long Term
Project Planning
Dirty Laundry

uk: Комп'ютерні науки

description: GeoMOOSE released its very first version in 2005. At nearly 10 years old the project has continued to hold on to its original developers and many of its foundation users. Over that lifespan the project has allowed the development team to observe struggles in changing technology, attitudes, and the dedication required to keep such an open source project relevant as it ages.Nearly 10 years worth of dirty laundry will be aired! And a preview of GeoMOOSE 3.0 ideas! And slides with exclamation points!

uk: вхід без авторизації


keywords:
open data
standards
technology

uk: Комп'ютерні науки

description: Up in the frozen wastes of the Northern British Columbia, we organized a hackathon. We based it on the ideas of open data and civic applications.Our hardy hackathoners pulled together a number of excellent ideas but met with a constant and obtrusive barrier: that open data maybe open but with out some level of standardization its not actually very useful.Now, no one said that data had to be 'useful', and perhaps if we want the technology utopia of real open data interoperability we will need to "build it" ourselves, but it is worth noting that talking the same language as our neighbours is generally awesome. Indeed, perhaps rather than swearing fealty to our technology overlords and just pressing the "publish document to open data platform" button, we could think about the commonwealth of data. The value of any data increases wildly with density and open data should be more valuable!The cats? well you'll have to tune in for that bit.

uk: вхід без авторизації

name: Disparate data, technology fiefdoms and 65 pictures of your cat


Easy ETL with OGR

keywords: OGR ETL Python

uk: Комп'ютерні науки

description: The ogrtools Python library lets you run complex ogr2ogr operations defined in a configuration file supporting transformations of all OGR vector formats. It uses the OGR Virtual Format (VRT) internally for transformations like renaming tables or columns, calculating values and converting data types. Since version 1.11 of GDAL/OGR, multiple geometry columns per table are fully supported for major data formats.As a pure Python library using OGR Python bindings, it has no additional dependencies and is therefore easy to integrate in other applications like QGIS.https://github.com/sourcepole/ogrtools

uk: вхід без авторизації


PyWPS - 4 project report

keywords:
PyWPS
OGC WPS
development
Python

uk: Комп'ютерні науки

description: PyWPS is one of the first implementations of OGC Web Processing Service (OGC WPS 1.0.0) on the server-side, using Python programming language. Since it's beginning in 2006 it was offering support for running scripts of GRASS GIS and other popular libraries, such as R, GDAL, Proj4 and other. Users of PyWPS can write their server-side geo-scripts and interface them on the internet using standard WPS interface.During last two years, PyWPS development team was discussing new features, users would like to see in this popular OGC WPS Server implementation. Users were missing for example proper support for multiple in- and outputs, advanced logging, more natural serializing, possibility to store big data to external services. PyWPS was never validating properly input data, as long as underlying libraries were able to read them.Also new versions of nearly everything are at hand - Python 3, GRASS GIS 7 with proper Python support, Fiona, Shapely, no need to write custom code, when OWSLib is around. New formats are now used for sharing of raster and vector data, for example Geo- and TopoJSON. They can be even validated, using json-schema. Python became The geo-scripting language since 2006 (now being slowly replaced by JavaScript).Current work on PyWPS 4 is split into several fields: New WSGI interface was written, using Werkzeug. PyWPS has now new core for in- and output data structures (LiteralData and ComplexData). New IOHandler base object can seamlessly switch between file-, stream-like- and in-memory objects.PyWPS - 4 contains validators of input complex data, which uses four-level of validation (None, mime-type based, "can read GDAL", schema validation) for XML-based format (like GML) but also for JSON-based formats (like GeoJSON). Literal data are validated on similar way.We are going to support MapServer, Geoserver and QGIS MapServer in the future for output complex data management and serving. Data are going to be stored in storages (new abstract class defined), which currently is file system based by now, but can be extend to remote storage (such as FTP or e.g. Dropbox), or to database servers. Possibilities of WPS-T are discussed as well.PyWPS - 4 will remain the old PyWPS, how our users do like it: small, fast to install and configure, fast to run. But with new features at hand, we will provide you with modern, safe, scalable tool, which you can use to interface the work of yours on the internet.

uk: вхід без авторизації


keywords:
OGC
WPS
GDAL
GRASS
ZOO-Project
LibreOffice
Web Processing
Web Applications

uk: Комп'ютерні науки

description: ZOO-Project is an Open Source Implementation of the OGC Web Processing Service (WPS), it was released under a MIT/X-11 style license and is currently in incubation at OSGeo. It provides a WPS compliant developer-friendly framework to easilly create and chain WPS Web services.This talk give a brief overview of the platform and summarize new capabilities and enhancement available in the 1.4.0 release.A brief introduction to WPS and a summary of the Open Source project history with its direct link with FOSS4G will be presented. Then an overview of the ZOO-Project will serve to introduce new functionalities and concepts available in the 1.4.0 release and highlight their interrests for applications developpers and users. Then, examples of concrete services chain use will illustrate the way ZOO-Project can be used to build complete applications in a flexible way by using the service chain concept, creating new service by implementing intelligent chain of service through ZOO-API but also by taking advantage of the publication using OGC standards. Various use of OSGeo softwares, such as GDAL, GEOS, PostGIS, pgRouting, as WPS services through the ZOO-Project will be illustrated by applications presentation.

uk: вхід без авторизації

name: ZOO-Project 1.4.0: news about the Open WPS Platform


MapStory: The next plateau

keywords:
peer review
open data
space-time
storytelling

uk: Комп'ютерні науки

description: MapStory.org is a community-driven open educational resource that lets people share and peer review observations about how the world evolves over time and space. It's built on an open source geospatial stack (PostGIS, GeoServer, OpenLayers, GeoNode) and aims to empower both authoritative and public participation in data collection, peer review, and storytelling. We want to use this session to debut a "new plateau" for MapStory that includes an updated user interface with new features, namely integration of GeoGit Ôcrowdediting' of data and XYT frames for MapStories (what we call StoryBoxes).

uk: вхід без авторизації


keywords:
web applications
survey
Visualization
user contributed
social networking
PostGIS
Leaflet

uk: Комп'ютерні науки

description: This project, originally inspired by the pop vs soda maps (www.popvssoda.com) seeks to create a web application where any question can be asked and answered by anyone with internet access. The Mapossum allows users to visualize spatial patterns in the questions they wish to pose without the need to possess the knowledge necessary to create maps of their own. The application creates a spatial web-survey system that harnesses the visualization power of a web map to explore the spatial components of question. As a tool it has the ability to help users reveal a different dimension of spatial interactions, and provides more insight into cultural and regional interactions. To accomplish this we have created a framework that abstracts the creation of questions and the logging of spatially referenced responses so that the answers can be mapped as points, or aggregated at various levels of administrative or political units (counties, states, countries). The application utilizes PostGIS/PostgreSQL to store and manipulate the data for the questions, responses, and other spatial data needed to support the application. The information is served as Web Mercator tiles using Python and Mapnik. On the front end these tiles and other data are consumed using the Leaflet JavaScript library. Users have the ability to create questions and the possible responses to these questions, as well as query the responses. The presentation will discuss the framework in detail, and we will demonstrate the use of the application for various types of question Ð response collection scenarios. The application has potential to be used as a general data collection tool for those collecting data in the field. We are also seeking to include the ability to couple the process of both answering and visualizing responses with social networking sites. The Mapossum couples a web-survey system with the visualization power of a web map to explore questions that have a spatial component to them as so many questions do.

uk: вхід без авторизації

name: The Mapossum: A System for Creating, Collecting and Displaying Spatially-Referenced Answers to User-Contributed Questions


keywords:
online mapping
CMS
community mapping

uk: Комп'ютерні науки

description: I will discuss what we learned when we built an online mapping community for Native & non-Native youth, educators and community leaders. Our Pacific Northwest First Nations Totem Poles program teaches community members to collect, create, map, and curate content using mobile devices and an easily configurable content management system.Social curation helps our First Nation participants preserve their culture, language, arts, and writing by engaging participants across generations. Because how content is collected is just as important as the content itself, the program leverages social curation to build communities to harness social media and create "digital repositories" of cultural knowledge.Geographic data is a key social and technical component of the project — participants use GPS-enabled devices to 'tag' the locations of totem poles and to associate photographs and histories collected and written by the participants. The data is then assembled into both event-specific private websites accessible only to participants with the ability to push content to a public website Ð DiscoverTotems.com. The project is designed to be easily is designed to be re-deployed for different semesters in educational settings by non-technical event facilitators. Think "hack-a-thons for totem pole trackers"!In addition to describing the lessons learned, I will also cover issues in Privacy, Copyright, Security of Online Content, and how we leveraged Open Source Geospatial & Cloud technologies to scale and manage our new "digital repositories ".

uk: вхід без авторизації

name: The DiscoverTotems Project: Social Curation with Mapping


A GeoNode primer.

keywords: geonode django cms geoserver csw

uk: Комп'ютерні науки

description: GeoNode is a web-based extendable platform for the management and publication of geospatial data. It brings together mature and stable open-source software projects under a consistent and easy-to-use interface allowing users, with little training, to quickly and easily share data and create interactive maps. This talk will be a high-level overview, suitable for new users, of the application's functionality including examples of the creative ways organizations are using GeoNode. This talk will also cover new functionality being added in the 2.1 release and the status of that release.

uk: вхід без авторизації


WPS Benchmarking Session

keywords:
WPS
Benchmarking
OSGeo
52¡North WPS
Constellation WPS
GeoServer
PyWPS
ZOO-Project

uk: Комп'ютерні науки

description: With the interrest for OGC Web Processing Service growing, we need to know details about the Open Source Solutions available. Various projects implementing WPS designed individuals from their community to participate in this talk to introduce their project and summarize their key features, they are the following: 52¡North WPS, Constellation SDI, GeoServer, PyWPS, ZOO-Project. For being able to provide good quality results, the tests should be run locally, so a server dedicated to this WPS Benchmarking Session, hosting OSGeoLive environments, is accessible to each team for running test procedures defined through discussions. The results of the given test procedures will be presented during this session and will compare implementations from different aspects: capabilities, compliancy, ressources usage and performance.

uk: вхід без авторизації


State of GeoServer and GeoTools 2014

keywords:
GeoTools
GeoServer
WMS
WFS
WCS
WMTS
WPS
OGC
Java
Geospatial Toolkit
OSGeo
JTS
GeoWebCache

uk: Комп'ютерні науки

description: GeoServer and the Java toolkit GeoTools comprise one of OSGeo's fastest moving mapping ecosystems. In addition to this core we will cover java-stack developments in JTS, GeoWebCache and ImageIO-Ext.First up is "State of GeoServer" reviewing the new and noteworthy features introduced in the past year. Our six month release cycle sees GeoServer 2.5 and 2.6 being released this year. These releases bring together exciting new features: WCS 2.0 and WCS 2.0 Earth Observation profile, batch importer, and a fresh implementation of GetFeatureInfo.Switching to technical for a GeoTools update. A passion for performance sees improvements in PNG and JPEG encoding, rendering from PostGIS and experimental JDK work. This presentation provides a review of new features, api changes and community modules. We have simplified the core FeatureCollection interface, introduced partial 3D support, structured grid coverages, multiple grid coverages and extended JTS Geometry with Curves.Data formats support continues to grow with the latest GeoPackage, native NetCDF support and a new shapefile and wfs client implementation. Database users have table and index management methods to look forward to. Extensions have seen a lot of activity with WMS client improvements, vector grids, and a transform extension for dynamic feature collection processing.Attend this talk for a cheerful update on what is happening with these great OSGeo projects! Whether you are an expert user, a developer, or simply curious what these projects can do for you, this talk is for you.

uk: вхід без авторизації


Connected Cars with PouchDB

keywords: PouchDB CouchDB NoSQL BigData

uk: Комп'ютерні науки

description: Connected cars are everywhere and writing apps for connected cars is an emerging space. OpenXC is an open JSON data API for Ford cars that enables developers to write custom apps for telemetry data in real time, this includes geographic location.Bandwidth and connectivity in a car is limited however and as such an app needs to be written to be offline first. This talk discusses the difficulties of connected cars and how to overcome this big data problem with PouchDB, CouchDB, Leaflet and Google Chrome Applications.

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keywords: GeoCouch CouchDB Couchbase NoSQL database multidimensional

uk: Комп'ютерні науки

description: This talk is about GeoCouch, a spatial extension for Couchbase and Apache CouchDB. I will give a quick introduction into Couchbase and Apache CouchDB and why they might be the ideal databases for solving your problem.With GeoCouch it is not only possible to query your spatial data, but also your spatio-temporal, or even higher dimensions. For example you might want to find all parking lots within a certain area that offer free parking from 3-4 pm and have at least space for 100 cars.GeoCouch, Apache CouchDB and Couchbase are licensed unter the Apache 2.0 License.

uk: вхід без авторизації

name: GeoCouch: A distributed multidimensional index


keywords: Database Search NoSQL Vector Indexing Geohash Benchmark Lucene Elasticsearch Solr

uk: Комп'ютерні науки

description: Lucene, and the NoSQL stores that leverage it, support storage and searching of polygonal records. However the spatial index implementation traditionally has returned false matches to spatial queries.We have contributed a new spatial indexing strategy to Lucene Spatial that returns fully accurate results (i.e. exact matches only).Better still, this new spatial search strategy often enables keeping a smaller index and and faster retrieval of results.I will illustrate why false matches happen -- this requires a high-level walkthrough of spatial index trees -- and real world cases where it makes a difference.Our initial workaround was to query Elasticsearch through a separate server layer that post-filters Elasticsearch results against the query shape, removing the false matches.We've now built a similar approach into Lucene Spatial itself. By virtue of living inside, this new solution can take advantage of numerous efficiencies:1. it filters away false matches before fetching their document contents;2. it uses a binary serialization that is far faster than the GeoJSON we used before;3. it optimizes the tradeoff between work done in the index tree vs. post-filtering, often resulting in a smaller index and faster querying. I will provide benchmark numbers.I'll illustrate how developers and database administrators can use this improvement in their own databases (it's easy!).

uk: вхід без авторизації

name: Accurate polygon search in Lucene Spatial (with performance benefits to boot!)


keywords:
node.js
Leaflet
marker cluster
MongoDB
user experience

uk: Комп'ютерні науки

description: What happens when you try to give map users a rich display with thousands of points in a web browser? Generally, one of two things occurs. One, the map looks like a carpet of marker symbols. Two, depending on device and bandwidth, a browser-side clustering algorithm can delay the display for an agonizingly long time. The problem is acute in dynamic map systems where automated processes or users generate content because the system architects cannot know in advance how many map entities will be created. Think of mapping tweets, potholes in a major city, or locations of coffee places in Portland Ð map displays have to show dense data effectively. Our presentation shows how a Leaflet plug-in is used on a node.js server to solve this problem. We will demonstrate how the Leaflet.markercluster plug-in is used to generate clusters. Once generated, the clusters are stored in MongoDB and retrieved using a MongoDB geospatial index.

uk: вхід без авторизації

name: Server-Side Marker Clustering For Rapid Display of Large Datasets

name: Open Source Geospatial Foundation (OSGeo)


Js.Geo part Deux recap

uk: Комп'ютерні науки

description: For those of you sad pandas who couldn't make JS.geo on Tuesday, we will give a quick intro as to why scheduling was so hard this year, a quick tour of some of the amazing demos, highlights of the discussion from the day, and wrap up with what we would like to do to see it go smoother next year. Be there or be square (actually all that would happen is you would miss out on the coolest tech demo'ed at FOSS4G)!

uk: вхід без авторизації


keywords:
GeoGit
GeoTools
GeoServer
ArcSDE
Offline editing

uk: Комп'ютерні науки

description: After creating a custom application featuring ArcSDE and the ESRI Mobile SDK for use by the field crew from a local Mosquito and Vector Abatement District, we sought an alternative to the high overhead from the proprietary software. By utilizing GeoTools, GeoServer, and GeoGit, we were able to develop a full-fledged application maintaining the same functionality and usability of the original application, without the high cost of entry.The GeoTools application, "Mosquito," and GeoServer, were placed on each of the field laptops of the twenty-member crew, serving both the application and cached base layers to allow for offline data connection. A USB Bluetooth GPS dongle was used to allow workers to locate themselves within the application. GeoGit was utilized to allow the disparate field workers to merge and synchronize data to the master database at the end of their shift.

uk: вхід без авторизації

name: GeoTools, GeoServer, GeoGit: A Case Study of Use in Utility Field Work


Distributed Versioned Editing in Action

keywords:
Disaster Response
GeoGit
Versioned Editing
GeoNode

uk: Комп'ютерні науки

description: The concept of distributed versioned editing has been instantiated as GeoGit (http://geogit.org). This talk is about the practical application of both the concept and the software to empower people to collaboratively develop geospatial information in distributed and sometimes disconnected environments. The ROGUE team used GeoNode, GeoGit, and the OpenGeo Suite to provide a collaborative editing environment that maintains provenance of the data. The discussion will include an overview of how the technology is being used operationally in Honduras and for risk assessment and response. What worked, what didn't, and where can we take this next. I'll give you my opinion and I'd love to hear yours

uk: вхід без авторизації


keywords: github geojson leaflet mapbox

uk: Комп'ютерні науки

description: Last June, GitHub announced support for GeoJSON rendering — just commit and you have a versioned, open-source map. Six months later, visual GeoJSON diffing followed suit. Since then, GitHub hosts hundreds of thousands of GeoJSON files, has served millions of maps, and has diffed tens of thousands of changes, both proposed and realized. Why GeoJSON? Why Leaflet? Why openstreetmap? We'll take a look at both the technical how, and the philisophical why, and pull back the curtain on GitHub's recent venture into the world of GIS.

uk: вхід без авторизації

name: Open source, open standards and 50 lines of code: A look behind GitHub's GeoJSON rendering and diffing


Automated Vehicle Location (AVL)

uk: Комп'ютерні науки

description: Using OpenLayers and GeoMoose web clients, MapServer and the PostgreSQL/PostGIS database packages, we've built a live view for our Automated Vehicle Locating (AVL) system, as well as custom geographic reporting tools. This talk will cover why we chose to build our own web viewer instead of using a commercial package, and reasons to use the existing Open Source web viewers. We'll also show how the feed from the commercial AVL vendor was translated into the Postgres database in order to build out a smooth end user experience. There will also be discussion on standards for the database tables and records in order to make the system plug and play for others interested in customizing a live AVL web viewer on their own. Some production services will be demonstrated in a live view mode.

uk: вхід без авторизації


Writing better PostGIS queries

keywords:
postgis
sql
postgis raster

uk: Комп'ютерні науки

description: This presentation will demonstrate ways to take most advantage of spatial indexes, SQL constructs, and PostGIS specific functions. For these exercises we'll be using PostGIS 2.1+ and PostgreSQL 9.3+ . We'll demonstrate common cases people often do inefficiently.This presentation demonstrates the following1) Various SQL constructs including ANTI join, LEFT, RIGHT, EXISTS, LATERAL, CASE clauses, aggregates2) What common table expressions (CTEs) are and when to and when not to use them3) We'll demonstrate these concepts in use in a couple of common spatial query problems - e.g. proximity analysis (both geometry and geography), raster analysis and generation, aggregation of data based on various attributes, other correlation queries.

uk: вхід без авторизації


GIS goes 3D : an OpenSource stack

keywords: 3D PostGIS QGIS Horao LIDAR SFCGAL CGAL Three.js

uk: Комп'ютерні науки

description: 3D in GIS is already here, with more and more data available, and new hardware and sensors for 3D data capture and interaction. The third dimension becomes useful for several use cases and applications, since the technology is now available to achieve full 3D spatial analysis, like 3D intersections, 3D buffers, triangulation and a lot of other data processing capabilities we already use with 2D data. 3D Point clouds from Lidar data, 3D Meshes or TIN, this can now be stored and processed.With 3D data, an absolute must-have is a nice, fast and smooth rendering of features. Visualization is a key element of a complete vertical software stack of 3D data management.This presentation will demonstrate the ability to setup and take advantage of a full FOSS4G 3D stack.Taking data from 3D sensors, or real use-case GIS Open Data, we present the components which can be used together to build the core infrastructure of 3D data management. From data storage to data visualization, through processing and webservices.* Learn how you can use PostgreSQL and PostGIS latest enhancement to store and process 3D data.* Discover how you can setup 3D Web Services for data dissemination* Visualize 3D data with QGIS thanks to the Horao Plugin* Find out the visualization tools available for your favorite browser (Three.js powered)Here we are, a full 3D stack, with OpenSource tools. Software components, data formats, protocols and standards, you will get a global picture of the infrastructure available to extract the value out of your 3D data.

uk: вхід без авторизації


keywords:
GRASS GIS
3D-printing
additive manufacturing
science communication
data visualisation
haptic access to data

uk: Комп'ютерні науки

description: As the amount of scientific data continues to grow, researchers need new tools to help them visualize complex data. Immersive data-visualisations are helpful, yet fail to provide tactile feedback and sensory feedback on spatial orientation, as provided from tangible objects. The production of a tangible representation of a scientific data set is one step in a line of scientific thinking, leading from the physical world into scientific reasoning and back: The process starts with a physical observation, or from a data stream generated by an environmental sensor. This data stream is turned into a geo-referenced data set. This data is turned into a volume representation which is converted into command sequences for the printing device, leading to the creation of a 3D printout via additive manufacturing ("3D-printing"). As a last, but crucial step, this new object has to be documented and linked to the associated metadata, and curated in long term repositories to preserve its scientific meaning and context.This presentation showcases a reference workflow to produce tangible 3D data-prints based on Free and Open Source Software (FOSS), using both GRASS GIS and Paraview. The workflow was successfully validated in various application scenarios using a RapMan printer to create 3D specimens of elevation models, geological underground models, ice penetrating radar soundings for planetology, and space time stacks for Tsunami model quality assessment.

uk: вхід без авторизації

name: 3D-printing with GRASS GIS Ð a work in progress in report


OpenDroneMap

uk: Комп'ютерні науки

description: Aimed at developers and end-users, this presentation will cover the current state-of-the-art of OpenDroneMap, toolkit of FOSS computer vision tools aiming to be easy to use for referencing unstructured photos into geography data (colorized point clouds, referenced photos, orthophotos, surface models and more), whether the images be sourced from street level photos, building interiors, or from sUASs (drones).Currently no such comprehensive FOSS toolkit exists and is easy to use and install. ODM aims to fill this gap.

uk: вхід без авторизації


Cartography from code...?

keywords:
coding
cartography
mapping API

uk: Комп'ютерні науки

description: Nowadays we see, specifically on the Web, maps that are interactive, creative, as well as beautiful and effective. And more and more these maps are no longer "drawn", by hand or computer, but "coded". Programmed. In this talk we show that with modern programming tools, such as the popular D3 API, the results can be as good or better, even to the most discerning cartographer. And we discuss the question "can programmers be cartographers, or should cartographers become programmers...?"

uk: вхід без авторизації


Advanced CartoCSS Techniques

keywords: CartoCSS Mapbox

uk: Комп'ютерні науки

description: CartoCSS is becoming an ever more popular Ð and ever more powerful Ð tool for cartographic and data styling. In this talk, Stamen designers and technologists will present some tips and tricks to make your next design sing. Tips and tricks covered include, but will not be limited to: pixelation, use of dingbat fonts for texture and markers, post-facto label adjustment, alternate uses for text symbolization, where to find and use entropy, blending, and geometry manipulation.

uk: вхід без авторизації


keywords:
design
user interface
mapping

uk: Комп'ютерні науки

description: Open source geospatial is in an Enlightenment era regarding design; many teams are breaking away from tradition and embracing simple, clean, and usable interfaces. For a long time though, open source geospatial software, and geospatial software in general, seemed to pay little attention to the knowledge of the design community. Here, I will discuss why design has taken a backseat for such a long history and what is suddenly changing that brings it to the forefront. I will also talk some about the design decisions that have gone into the CartoDB user interface and many of the mapping options we help our users find. This talk will focus both on the history of design in open source geospatial software and where it is heading in the future. We will also talk about how design itself is inherently open and how we are working to improve open source software design through our own contributions and through this discussion of our process.

uk: вхід без авторизації

name: The unrelenting progress of design in open source


Regional Conservation Strategy Viewer

keywords:
portland
intertwine
conservation
strategy
raster
analysis
land use
planning

uk: Комп'ютерні науки

description: The Intertwine Alliance has formed a Regional Conservation Strategy (RCS) for the area surrounding Portland, Oregon. The goal of the RCS is to guide the development by providing a high-resolution model of habitat valuation and land cover.The RCS Viewer allows website visitors to access and visualize high-value habitat and land cover, without specialized GIS knowledge or tools. By selecting, uploading, or drawing an area of interest, the user can bring up a feature-rich summary of habitat valuation and land cover.This presentation covers some uses of the RCS Viewer of interest to conservation-concerned planners in the area, as well as some technical details of interest to developers.

uk: вхід без авторизації


keywords:
EarthExplorer
Landsat
Geospatial
Open Source

uk: Комп'ютерні науки

description: The EarthExplorer (EarthExplorer.usgs.gov) system provides on-line search, order, browse and download of Landsat, aerial, LiDAR, and a multitude of other earth science data in support of the United Stated Geological Survey (USGS), Earth Resources Observation and Science (EROS) Center. Last year, the launch of the Landsat 8 satellite has provided over 200,000 additional scenes to the historical Landsat archive. EarthExplorer was developed to provide a fast, easy to use search engine to allow scientist and general users the ability to search and download data over their area of interest. The EarthExplorer user interface uses open source JavaScript libraries, PHP: Hypertext Preprocessor (PHP), Cascading Style Sheets, and the Google Map API. Some of the key features of EarthExplorer include:¥ Fast, geospatial search engine¥ Map viewer for viewing overlay footprints and browse overlays¥ Simple, fast Graphical User Interface (GUI)¥ Data access tool to search and discover data¥ Textual query capability¥ Keyhole Markup Language (KML) export capability to interface with Google Earth¥ Save or export queries, results, and map overlay for reuse¥ Request on-demand products¥ Access to browse images from standard products¥ User authentication service for access to specialized datasets and tools¥ Access to Landsat Data Continuity Mission (LDCM) quality band data¥ Standard product downloads¥ On-Demand Web Mapping Services¥ User notifications of new acquisitions and available products through subscription servicesIn addition the Bulk Download Application provides a simple tool for users to obtain large quantities of data without user interaction. Together with the EarthExplroer interface, user are able to obtain large amounts of data from the EROS archives.

uk: вхід без авторизації

name: EarthExplorer - On-line Search Tool for USGS Remote Sensing Data


keywords:
Biodiversity
Decision support
Environmental Impact Assessment

uk: Комп'ютерні науки

description: LEFT is a free to use, web-based decision support tool originally developed to aid industry in evaluating the pattern of relative ecological value across a landscape to inform their planning of land use in order to minimize the environmental impact of their operations. A user defines an area of interest anywhere globally using a web-based map and the tool then automatically processes a series of high-quality datasets using standard published algorithms to produce maps at 300m resolution of landcover class, numbers of globally threatened terrestrial vertebrate and plant species, beta-diversity of terrestrial vertebrates and plants, habitat fragmentation, wetland habitat connectivity, numbers of migratory species and vegetation resilience. These results are aggregated to produce a single map of relative ecological value. The tool then generates a customised pdf report and a zip file of GIS data for the area requested. Results are delivered to users by email within a few minutes of job submission. This tool has been designed to be highly intuitive to use, and requires no specialized software or user expertise: novice users can submit an analysis within a few minutes and get results which can inform business decisions. www.biodiversity.ox.ac.uk/left

uk: вхід без авторизації

name: Local Ecological Footprinting Tool (LEFT)


keywords:
WPS
ZOO-Project
MapServer
GDAL
OpenLayers
Web GIS
SDI

uk: Комп'ютерні науки

description: MapMint is an comprehensive task manager for publishing webmapping applications. It is a robust open source geospatial platform allowing the user to organize, edit, process and publish spatial data to the Internet. MapMint includes a complete administration tool for MapServer and a simple user interfaces to create mapfiles visually. Its use does not require any coding and most of the mapfile parameters are supported, so the user can fully focus on the map features and not on its source code. The latter is generated using various WPS requests which are using the user's data and settings as input.MapMint is based on the extensive use of OGC standards and automates WMS, WFS, WMT-S and WPS. Most of the MapMint core functions are run through WPS requests which are calling general or geospatial web services (vector and raster operations, mapfiles creation, spatial analysis and queries and much more). MapMint server-side is built on top of ZOO-Project, MapServer and GDAL and its numerous WPS services are written in Python and JavaScript. MapMint client-side is based on OpenLayers and Jquery and provides user-friendly to create, publish and view maps. MapMint architecture and main features will be introduced in this presentation, and its modules (dashboard, data, maps and apps) will be described with an emphasis on the OGC standards and OSGeo software they are using. Some short case studies and examples will finally illustrate some of the the key functionalities.

uk: вхід без авторизації

name: MapMint: The 100% service-oriented GIS platform


keywords:
performance
architecture
data visualization

uk: Комп'ютерні науки

description: At CartoDB is an open source stack that includes PostgreSQL, PostGIS, Mapnik and Leaflet. The hosted version enables thousands of users to make new and interesting maps everyday. With some of those users including Al Jazeera America, Twitter, and even online gaming platforms, we aren't scaling for one popular webpage but for thousands of different ones each day. On top of that, maps aren't constrained to a single filter, single style, or to a predefined zoom, CartoDB allows users to access the full power of a dynamic database from the front end. In this talk, I'll present the architecture decisions we have implemented that make it possible to turn PostgreSQL and PostGIS into components of a powerful real-time data visualization tool. These decisions cut straight through the CartoDB software stack, from PostgreSQL and PostGIS through our caching and tile services, and up through to our CartoDB.js library. We'll talk about our on-demand tiling service, our caching strategy, and our implementation of the novel data format for Torque. Each of these areas has enabled our users to make user of entirely open source tools to create maps and services that scale, remain fast, and are beautiful.

uk: вхід без авторизації

name: Dynamic mapping on the web: building a scalable service for thousands of companies


Mapping for Investigations

keywords: postgis features technology

uk: Комп'ютерні науки

description: Closing Keynote Speech, FOSS4G 2014, Portland, Oregon.

uk: вхід без авторизації


PostGIS Feature Frenzy

uk: Комп'ютерні науки

description: PostGIS has over 300 functions, which in turn can be used with the many features of the underlying PostgreSQL database. This talk covers some basic and not-_so-_basic ways to use PostGIS/PostgreSQL to process spatial data, to build infrastructures, and to do crazy things with data. Consider the possibilities: raster, topology, linear referencing, history tracking, web services, overlays, unions, joins, constraints, replication, json, xml, and more!

uk: вхід без авторизації


State of the (Geo) Gem

keywords: Happiness Ruby OGR Rails

uk: Комп'ютерні науки

description: According to its creator, Yukihiro "Matz" Matsumoto, "Ruby is designed to make programmers happy." While it may not achieve this goal for everyone, it works for at least one programmer (me). When developing spatial applications however, the seeming lack of support for Ruby can serve to diminish programmer happiness. The aim of this presentation is to show that Ruby, with the right gems, and an occasional bit of JRuby sprinkled on top, can make spatial programmers truly happy.

uk: вхід без авторизації


keywords: USACE Federal OpenLayers MapServer GeoTools MBTiles

uk: Комп'ютерні науки

description: The U.S. Army Corps of Engineers (USACE) is responsible for thousands of miles of levees in the United States. Over time the agency has developed a very specific way of evaluating levee systems and relationships between their constituent parts. This approach has served USACE well, at least until having to coordinate our internal data structures with additional data managed by other agencies or programs who potentially treat levees in very different ways. Solving this requirement led to a new approach being developed inside the USACE National Levee Database program referred to as Reaches. Based on linear referencing, the Reaches approach combines interactive creation of linear event themes, a graphical linear reference data editor, and user driven symbolization of the data within a single comprehensive web interface. Using a combination of OpenLayers, GeoExt on the client side and Oracle SDO, MapServer and GeoTools on the server, it is optimized both for speed and flexibility, putting the power of the linear referencing approach into the hands of a range of technical and non-technical users. This presentation presents an architectural overview of the system and how FOSS applications were leveraged during development of Reaches. The ability to manage data with a new level of flexibility and interactivity is supported in some cases by our new unmanned aerial vehicle (UAV) imagery pipeline. Flying imagery from altitudes only in the hundreds of feet give us images with resolution down to inches. By stitching these images into geotiff mosaic composites then processing into individual MBTiles databases using TileMill, we get a new level of perspective on construction projects and any other ground conditions, allowing for monitoring change over time at a convenience and price our agency has not previously had available. The full capability of this imagery is brought to light by our custom tile services that are generated down to zoom level 24. This presentation will show how by pairing the new imagery capabilities with the Reaches tools for collecting and storing data, our non-technical users now have access to tools and data normally reserved for the GIS/RS team.

uk: вхід без авторизації

name: Using FOSS Tools, UAVs and Linear Referencing to Better Manage Federal Levee Data


keywords:
agriculture
gps
Raspberry Pi

uk: Комп'ютерні науки

description: Little open source software finds its way into commercial agriculture and, yet, has the potential to reduce production costs for small farm operations as well as diminish potential harmful impacts on the environment in and around crops. Improving the efficiency of applying herbicides and pesticides can be brought about with improved control of sprayer operation.Row crop agriculture relies upon effective control of weeds and insects while minimizing impact on the environment and the farmer's budget. Using GPS to guide agricultural sprayers through the field can reduce chemical treatments by controlling the position of the sprayer to eliminate overlapping applications or leaving gaps between passes through the field.Commercial GPS guidance systems are economically out of reach for many small farm operations. An open source option has been developed for under $250 to reduce the investment to retrofit sprayers. The sprayer controller system takes advantage of over the counter electronic components and utilizes Python to encourage a larger audience of developers to participate in enhancing the current product.Minimizing the use of agricultural chemicals, along with responsible land management practices, can cut costs to farmers in both time and purchase of herbicides and pesticides. Providing an open architecture for applications to aid small farms in crop management will also benefit responsible stewardship of the natural environment.

uk: вхід без авторизації

name: Helping Farmers, Helping the Environment: An Affordable GPS Guidance System for Agricultural Sprayers


keywords: 3D temporal map terrain WebGL HTML5 JavaScript web mobile

uk: Комп'ютерні науки

description: When building 3D mapping apps, we no longer have to deal with closed feature-sets, limited programming models, temporal data challenges and bulky deployments. This talk introduces Cesium, a WebGL-based JavaScript library designed for easy development of lightweight web mapping apps. With live demos, we will show Cesium's major geospatial features including high-resolution global-scale terrain, map layers and vector data; support for open standards such as WMS, TMS and GeoJSON; smooth 3D camera control; and the use of time as a first-class citizen. We will show how Cesium easily deploys to a web browser without a plugin and on Android mobile devices.Since last year's talk at FOSS4G NA, Cesium has added 3D models using the open-standard glTF, a large geometry library and higher-resolution terrain.

uk: вхід без авторизації

name: What's new in Cesium: the open-source alternative for 3D maps