introduction to foss gis
TRANSCRIPT
Open Source& Web GIS
Mifan CareemCTO - RespereDirector, GIS Lead - Sahana ProjectCo-author: Book on Maps for AdvocacyGIS Consultant, SAGE - ICTA Committer – Mapbender ProjectMember – OSGEOVisting Lecturer – University of [email protected]
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Contents
● GIS● Open Source● Open Source GIS● OS GIS Stack● Web Mapping● Desktop GIS● Applications
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GIS what?
● Geographical Information System● A geographic information system (GIS)
captures, stores, analyzes, manages, and presents data that is linked to a location.
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What is Open Source
● Freedom to allow others to adopt and reuse while retaining rights over the code
● Community-driven software● Loads of documentation● Commercial support?
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Open Source GIS
● GIS Software that allows us to share our data with everyone using Open Standards
● Software that we can modify and use● GIS updated and enriched by community
participation● GIS data released an open license ??● GIS updated and enriched by community
participation
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A GIS Revolution!
Open Source GIS + Open Standards Data + Freely Available Community Data + GIS Services
+ INTERNET = A GIS REVOLUTION
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FOSS4G:Free and Open
Source Software for
Geospatial
OSGEO:The Open
Source Geospatial
Foundation
All of the products we'll talk about today are both free and open-source
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OS GIS Stack
Foundation Libraries
Desktop Web Services
Data Storage and Access
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Foundation Libraries
● Provide low level GIS capabilities:– Read and write different data formats
– Coordinate transformation capabilities
– Data transformation capabilities
– Geometry handling and computation
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Data Storage
● Move data from physical media to application– File based e.g. GDAL/OGR
– Database hosted e.g. PostGIS, SpatialLite
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Desktop
● Traditional Desktop GIS Applications● Quantum GIS● uDig● GRASS● SAGA● gvSIG
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USHMM
● United States Holocaust Memorial Museums's Crisis in Darfur
● Google Earth video
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Ushahidi
● http://www.ushahidi.com/● The Ushahidi Engine is a platform that allows
anyone to gather distributed data via SMS, email or web and visualize it on a map or timeline.
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Open Data
● Collaborative Mapping Projects– OpenStreetMaps, OpenCycleMap
● Humanitarian Volunteer Effort– Haiti Response
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Sahana GIS ...
QGIS
Sahana[UMN/Mapserver]
UMN/Mapserver
GeoServer
ESRI Server
uDIG
Sahana-OpenLayers
WMSWFS
GeoRSS
Local / Remote