Workshop on FOSS GIS

1. Open Source
& Web GIS
Mifan Careem
CTO - Respere
Director, GIS Lead - Sahana Project
Co-author: Book on Maps for Advocacy
GIS Consultant, SAGE - ICTA
Committer – Mapbender Project
Member – OSGEO
Visting Lecturer – University of Moratuwa
mifan@respere.com

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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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Why a GIS?

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A great tool for visualization!
A map speaks a thousand words!

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Advocacy

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Analysis & Reports

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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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Web Mapping

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Web Mapping
● Google maps, Yahoo maps, MS Live, Multimap

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Web mashups
● Situational Awareness...

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Web Mapping Clients
● Google Earth
● Blue Marble - NASA

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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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Satellite Images

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Open Data
● Collaborative Mapping Projects
– OpenStreetMaps, OpenCycleMap
● Humanitarian Volunteer Effort
– Haiti Response

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OSM vs GM
Kabul, Afghanistan

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OSM vs GM
Tblisi, Georgia

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Desktop GIS

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Desktop GIS

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OGC

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Sahana-GIS

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Sahana GIS ...
QGIS
Sahana
[UMN/Mapserver]
UMN/Mapserver
GeoServer
ESRI Server
uDIG
Sahana-OpenLayers
WMS
WFS
GeoRSS
Local / Remote

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Business Intelligence

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Spatial Intelligence

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Proprietary vs. Open Source

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THE END