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Open Source Geo ToolsTyler Mitchell
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Tyler Mitchell
• Geographer• Open Source Geospatial Advocate• GIS Manager at Timberline, B.C.• Author
Web Mapping Illustrated Using Open Source GIS Toolkits (O'Reilly)
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Data Components
Databases Files
Spatial data access API
Real-timeapps
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Data Components
PostgreSQLPostGIS
MySQL
Shape files
GeoTIFF
GML/XML
CSV/Text
Real-time GPS
Web Services
Search
Geospatial DataAbstraction Layer (GDAL)
MapServer / GeoServerfor web services
C C++ Python Images WMS WFS
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Functional Components
Creation
Manipulation
Visualisation
Analysis
Data Conversion
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Data Creation
DataCreation
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Data Creation
DataCreation
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Conversion
Data Conversion
Raster conversion> gdal_translate -of GTiff input.jpg output.tif
> gdal_translate -of ECW input.jpg output.ecw
Vector conversion> ogr2ogr -f GML output.gml input.shp
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Manipulation
Data
Manipulation
Raster clip> gdal_translate -projwin -122.19 52.21 -122.08 52.11
input_dem.tif output_clip.tif
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Manipulation
Data
Manipulation
PostGIS query to buffer points> CREATE TABLE station_areas AS (
SELECT buffer(geo_points,2) FROM stations WHERE..
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Analysis
Data
Analysis
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Analysis
Data
Analysis
PostGIS query to analysis distances
> SELECT county.nameFROM counties, stationsWHERE distance(counties.geo, stations.geo) < 10 AND stations.power > 150;
name-----------BarnstableDukesNantucketPlymouth
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Analysis
Data
Analysis
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Visualisation
Data
Visualisation
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Visualisation
Data
Visualisation
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Visualisation
Data
Visualisation
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Visualisation
Data
Visualisation
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Visualisation
Data
Visualisation
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Summary
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Watch For...
●Continued progress of GDAL●Desktop GIS/mapping to stabilise●Further consolidation●Bridging between OSGeo/commercial●Web service platforms (OWS)●GUI to spatial database functions●"Foundation" development
Open Source Geo ToolsOpen Source Geo ToolsTyler MitchellTyler Mitchell
Contact & Follow-up
MapTools.orgFreeGIS.org
O'Reilly Network Weblogoreillynet.com
tylermitchell@shaw.ca
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