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Open Source
GIS
The Ecotrust mission
to utilize new
innovative technology
Aaron Racicot – GIS Programmer
[email protected]
Goals
• Utilize Open Source Technology
– Save on cost
– Rapid response to problems
– Be an active participant in the community
• Develop web-based decision support tools
– Gain a greater audience
– Migrate from relying on complex/proprietary desktop software for
simple GIS tasks
• Create a “Salmon Nation” data repository
– Automated data mining
– Seamless data sets
– WMS/WFS/OPeNDAP server/client
Open Source Technology
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Fedora Core 3
Apache 2.0.52
PHP 4.3.10
PostgeSQL 8.0.1
GEOS 2.2.1
PostGIS 1.0.0
GDAL/OGR 1.2.5
Proj.4 4.4.9
Mapserver 4.4.2
Grass 6.0.0
International User Groups
Conferences
Source Code
Email/Web forums
Key Pieces
• Mapserver Web Based Mapping
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Can be run as CGI or as script
Utilizes SWIG to create Mapscript environment
Interfaces to GDAL/OGR for raster and vector processing
Interfaces to PostGIS and SDE
Faster than ArcIMS
• PostgreSQL/PostGIS
– Dynamic relational database with OGC compliant interfaces
– Mainly focused on vector storage, but soon to support rasters
Web-based decision support tools
• Utilize powerful desktop GIS on backend and web based GIS
on front end.
– GRASS – used for vector and raster based processing via command
line calls from PHP.
– Mapserver used to directly display results from online analysis
– A new way of looking at scenario based decision making
• Allowing users to interact
– Automated file upload and run management
– Web-based polygon capture for scenario based simulation
• Ocean Planner - Demo
Salmon Nation
The lands
and waters of
Salmon Nation
“Salmon Nation” data repository
• Ecotrust has a geographic area of interest in the area known
as Salmon Nation.
– Data stored in common formats (ArcINFO/GRID, PostGIS,
Shapefiles, GTiff, etc)
– Seamless data where possible
– Automated data mining for easy data refresh
– Web-based interfaces for both intranet and internet access
– Seamless data extraction over arbitrary areas by chopping files or
aggregating multiple files
• Serve our data via WMS/WFS/OPeNDAP
• Use remote data when possible
Cool projects underway
• Base data compilation
– All TIGER data. Compiled and processed into shapefiles and
PostGIS
– Seamless 10 Meter DEM’s
• Keyhole like zooming
– Siuslaw Watershed – Demo
• User based interfaces
– Utilizing PHP sessions. Saved state between sessions
– Custom upload/download
• Applet development
• CVS access - http://pearl.ecotrust.org/cgi-bin/cvsweb.cgi/