= Using GDAL - Geospatial Data Abstraction Library =
[[Image(source:EDA/data/Docs/trac/gdal.jpg)]]
back to Recipes for EDA ["CookBook Eda"]
== gdal ==
gdal url:[http://www.gdal.org/][[BR]] is a translator library for raster geospatial data formats that is released under an X/MIT style Open Source license by the Open Source Geospatial Foundation. As a library, it presents a single abstract data model to the calling application for all supported formats. It also comes with a variety of useful commandline utilities for data translation and processing. [[BR]]
Cédric => What I've found at this site is not really helpfull, it is only python and c++ code.[[BR]]
url:[http://www.bostongis.com/?content_name=ogr_cheatsheet] => very good site !
url:[http://trac.osgeo.org/gdal/] not really usefull

In fact gdal comes with two main tools (executable files), the command files for gdal are in C:\OSGeo4W\share\gdal
 call >cmd
{{{C:\OSGeo4W\bin\ogr2ogr
}}}
or 
{{{C:\OSGeo4W\bin\ogrinfo
}}}
=== Some work with postgres and so far I've failed to make them work either in rgdal or gdal, fuck ! ===
todo more research here...
=== What works so far ... ===
Translating .mdb into shapes outside ESRI
{{{
C:\OSGeo4W\bin\ogr2ogr -f "ESRI Shapefile" C:\base\basesig\Czhyd.shp C:\base\basesig\Czhyd.mdb
}}}
Attention il faut mettre les fichiers à un endroit ou il n'y a pas d'espaces dans le chemin (ex : pas de "document and settings/"...)


== rgdal ==

Similar content in rgal library in R but with less support[[BR]]
best site for help is
url:[http://www.bostongis.com/?content_name=ogr_cheatsheet]
help for rgdal package
url:[file:///C:/Program%20Files/R/R-2.10.0/library/rgdal/html/00Index.html]