Free and Open Source GIS

FOSS GIS Open Source Software for Geographic information stystem (GIS) Jachym Cepicky • Help Service - Remote Sensing • http://bnhelp.cz Jachym Cepicky, jachym@hsrs.cz

FOSS GIS • Help Service - Remote Sensing s.r.o. • Member of GRASS GIS http://grass.osge.org development team • Founder and developer of PyWPS http://pywps.wald.intevation.org Jachym Cepicky, jachym@hsrs.cz

FOSS GIS GIS - "Maps in the computer" GIS is a system designed to capture, store, manipulate, analyze, manage, and present all types of geographical data. Jachym Cepicky, jachym@hsrs.cz

FOSS GIS Standards and formats of geo-data nad data transfare Two types of geodata representation is used raster a vector Jachym Cepicky, jachym@hsrs.cz

FOSS GIS Raster suitable for description of data with continuous change (digital elevation model, temperatures, ...) - data without clear borders JPEG, GeoTIFF (TIFF, PNG, GIF, MrSid, ...), databases (Oracle-spatial, PostGIS, ...) Jachym Cepicky, jachym@hsrs.cz

FOSS GIS Vector suitable for descriptio of discrete types of data (streets, parcels, sensors, ...) ESRI Shapefile, GML, KML, GPX, ..., databases (Oracle-spatial, PostGIS, Spatial-lite, couch-db, ...) Jachym Cepicky, jachym@hsrs.cz

FOSS GIS Standards for data transfer • Geodata do usually have big volumes (n*GB) (example aerial photos digital elevation model, cadaster data, ...), but small volumes as well (GPS track in GPX). • Data can be often updated data (sensor position - car tracking) or sometimes updated (aerial photos). • For their transfer, media with large capacity must be used (no problem nowadays). • Widely accepted standards for data transfer across computer networks (internet) are defined: OGC Open Web Services Jachym Cepicky, jachym@hsrs.cz

FOSS GIS Open Geospatial Consortium • OGC: http://opengeospatial.org • Open standards for GIS • Payed mambership • OGC Open Web Services (OWS) Jachym Cepicky, jachym@hsrs.cz

FOSS GIS OGC Open Web Services Task: Transfer data from the server to the client Client: Web browser, desktop program, mobile device, robot, ... Types of geodata • Raster • Vector • Image • ... Jachym Cepicky, jachym@hsrs.cz

FOSS GIS All standards do share • They are XML-based • GetCapabilites request - returns back document with service metadata description Jachym Cepicky, jachym@hsrs.cz

FOSS GIS OGC Web Map Service With help of OGC WMS, server and client will "agree" on image - the map - which client wants to get and server is able to provide. Some request parameters: Jachym Cepicky, jachym@hsrs.cz

FOSS GIS • service - WMS • request - GetMap • version - 1.3.0 • layers - forest,traffic • bbox - 49,15,51,17 • crs - EPSG:4326 • width - 800 • height - 600 • format - image/png http://gis.bnhelp.cz/ows/crtopo?service=wms&request=getmap&versi In this case (WMS), no geodata are returned back - just their "picture". Jachym Cepicky, jachym@hsrs.cz

FOSS GIS OGC Web Feature Service With help of OGC WFS standard, raw vector data in defined encoding are returned back. There is also WFS-T variant, which enables direct data manipulation on the server (vector data editing). • service - WFS • request - GetFeature • typename - NUTS1 • version - 1.1.0 http://gis.bnhelp.cz/ows/crwfs?service=wfs&request=getfeature&type Server returns back real data Jachym Cepicky, jachym@hsrs.cz

FOSS GIS OGC Web Coverage Service With help of OGC WCS raster geodata are transfered - aerial photos, digital elevation model, multi-band satelite images, ... • service - WCS • version - 1.0.0 • request - getcoverage • coverage - OMAERUVd:FinalAerosolAbsOpticalDepth500 • crs - epsg:4326 • bbox - 14,49,17,51 • heigh - 600 • width - 800 Jachym Cepicky, jachym@hsrs.cz

FOSS GIS http://acdisc.sci.gsfc.nasa.gov/daac-bin/wcsL3?service=WCS&version= Server sends back to the client real raster data Jachym Cepicky, jachym@hsrs.cz

FOSS GIS OGC OWS Conclusion • http://opengeospatial.org/standards • OGC WMS - maps • OGC WCS - rasters • OGC WFS - vectors • OGC WPS - processes, calculations • OGC SOS - sensors • OGC CS-W - metadata • GML, KML, • SLD • Simple Feature • ... Jachym Cepicky, jachym@hsrs.cz

FOSS GIS Infrastructure for Spatial Information in the European Community - INSPIRE • INSPIRE (INfrastructure for SPatial InfoRmation in Europe) • http://inspire.gov.cz/ • EU Comission initiative, directive 2007/2/EC • Build common European spatial data infrastracture Jachym Cepicky, jachym@hsrs.cz

FOSS GIS • Geodata harmonisation • Coordinate reference systems • Cadaster maps • Thematic data (geology, land planning, pedology, ...) • Building of national geoportals, which will work as central point of data search across all state institutions and communication point to the European geoportal. • Metadata Jachym Cepicky, jachym@hsrs.cz

FOSS GIS Jachym Cepicky, jachym@hsrs.cz

FOSS GIS • INSPIRE builds on top of OGC standards • Download Service - WCS, WFS • View Service - WMS • Transformation Service • Discovery - CS-W Jachym Cepicky, jachym@hsrs.cz

FOSS GIS What does it mean to Open Source? • Using Open Source programs, we have to make sure, they are supporting OGC Standards. • We have to make also sure, INSPIRE directive can be done with help of those tools Jachym Cepicky, jachym@hsrs.cz

FOSS GIS GIS on the desktop: Data, analysis, cartography • Programs are running on user's desktop • Usually, they have some analytical modules with algorithms for complex data analysis: Weather modelling, flood wave spread, digital elevation model interpolation, isolines derivation, shortest path calculations, ... • Data and GIS it self are on the same computer Jachym Cepicky, jachym@hsrs.cz

FOSS GIS QGIS Jachym Cepicky, jachym@hsrs.cz

FOSS GIS • http://qgis.org • geodata viewer + some analytical functions (also GUI to GRASS GIS) • Windows, Linux (UNIX), MacOS • Usage of QGIS in public administration: http://qgis.org/en/community/qgis-case-studies.html • QGIS in the governmental FOSSGIS stack of the Canton of Solothurn in Switzerland • QGIS - an interesting instrument for forestry planning concepts at local and regional level in Switzerland • QGIS and GRASS in Local Government Bushfire Hazard Mapping Jachym Cepicky, jachym@hsrs.cz

FOSS GIS • Using a free GIS at Jaime Moniz Secondary School: Quantum GIS • The use of QGIS in the Geodata Infrastructure of the City of Uster • City Munich Open Source software transfer - used QGIS Jachym Cepicky, jachym@hsrs.cz

FOSS GIS GRASS GIS Jachym Cepicky, jachym@hsrs.cz

FOSS GIS • http://grass.osgeo.org • Since 1982, US Army, Cerl • Heavy analytical tool • GUI build on top of command line interface • Windows, Linux, MacOS • Special features : 3D rasters, 3D vectors, time • Great possibility of process automatization - scripting with various languages (Python) Jachym Cepicky, jachym@hsrs.cz

FOSS GIS OpenJUMP, gvSIG, uDig OpenJUMP • Java • Geodata viewer • http://openjump.org gvSIG • Founded by Spanish government • Geodata viewer • http://gvsig.org uDig Jachym Cepicky, jachym@hsrs.cz

FOSS GIS • Build on top of GeoTools - Java • Geodata viewer • http://udig.refractions.net/ Jachym Cepicky, jachym@hsrs.cz

FOSS GIS Libraries GDAL http://gdal.org Transformation between various vector and raster data formats Proj4 http://trac.osgeo.org/proj/ Coordinates transformation between various coordinate reference systems R http://r-project.org Statistical software ... Jachym Cepicky, jachym@hsrs.cz

FOSS GIS GIS on the server: Mapping services, data services Server programs for data analysis and creation of map images. They also serve geodata requested by the client. PostGIS • PostgreSQL extension • Deals with data (rasters, vectors) stored in database (not in files). • Analytical functions • http://postgis.org/ Spatial-lite, CouchDB, ... • No-SQL database Jachym Cepicky, jachym@hsrs.cz

FOSS GIS MapServer • http://mapserver.org • Originally developed with NASA • Advanced cartographic output • Still the fastest mapping server (FOSS4G-Denver 2011) • Most used OS GIS software v Czech (COSMC, FMI, Liberec region, NP Šumava, ...) GeoServer • Java • http://geoserver.org • Popular server implementing OGC standards • Most used in "java world" Jachym Cepicky, jachym@hsrs.cz

FOSS GIS DeeGree • java • http://deegree.org • Popular in Germany (Bonn) • Implementing OGC Standards Jachym Cepicky, jachym@hsrs.cz

FOSS GIS GIS on the web: mapping applications, geoportals • Web browser: platform for work with geodata • The platform is not quite ideal: • Data size • Data formats • Depending on the users computer (size of RAM, processor speed, ...) • Various support of web standards (HTML (5), JavaScript, CSS, ...) Jachym Cepicky, jachym@hsrs.cz

FOSS GIS • Web formats of raster data: PNG, JPEG, GIF vs. GeoTiff • Vector data: XML, Text vs. ESRI Shapefile (binary, 3 files) • Capabilities of displaying vector data: SVG (standard), VML Jachym Cepicky, jachym@hsrs.cz

FOSS GIS OpenLayers • JavaScript library for building of map applications • Supports various raster (WMS, Tiles, ESRI, Google, Yahoo, ...) • and vector (GML, WFS, GPX, KML, Text, ...) data formats • Transformation of data between coordinate reference systems • Ready for devices with touch screen • http://openlayers.org Jachym Cepicky, jachym@hsrs.cz

FOSS GIS Projects building on top of OpenLayers • GeoExt http://geoext.org • HSLayers http://hslayers.org Examples of OpenLayers usage: Jachym Cepicky, jachym@hsrs.cz

FOSS GIS • ČUZK • National INSPIRE Geoportal • EU INSPIRE Geoportál • ... Jachym Cepicky, jachym@hsrs.cz

FOSS GIS HSLayers • http://hslayers.org • OpenLayers (http://openlayers.org) + ExtJS (http://sencha.org) • JavaScript library building of web mapping applications • INSPIRE • Czech national INSPIRE Geoportal Jachym Cepicky, jachym@hsrs.cz

FOSS GIS Leaflet • http://leaflet.cloudmade.com/ • Light JavaScript library (compared to OpenLayers) • Supports smaller amount of data formats • Supports only "google" (mercator) coordinate reference system Jachym Cepicky, jachym@hsrs.cz

FOSS GIS Data for GIS • Open data standards • Free available data • OpenStreetMap http://openstreetmap.org • Many project are going from closed source solution to open source: Google -> OpenStreetMap (Apple, Foursquare, ...) - what about OSEPA? Jachym Cepicky, jachym@hsrs.cz

FOSS GIS FOSS4G-CEE • Free and Open Source Software for Geospatial in Central and East Europe • Prague, 21.5. - 23.5. • http://foss4g-cee.org • Jachym Cepicky, jachym@hsrs.cz

FOSS GIS Conclusion • Open Source Geospatial software is already used in public administration • There are old mature projects, supporting latest standards • It does implement standards faster then closed-source tools (thanks to (among others) faster release process) • Development is founded by private companies or public administration (QGIS, MapServer, GRASS GIS) Jachym Cepicky, jachym@hsrs.cz

FOSS GIS Thank you jachym@hsrs.cz http://bnhelp.cz Jachym Cepicky, jachym@hsrs.cz

Free and Open Source GIS

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