[gdal-dev] ArcGIS "Update" and "Eliminate" equivalent

[Even Rouault]

Selon Pierre Marcel Anselme Lacroix <Pierre.Lacroix at unige.ch>:

> Hi,
>
> I would like to know whether GDAL has the equivalents of the ArcGIS "Update"
> and "Eliminate" tools.
>
> http://resources.arcgis.com/en/help/main/10.1/index.html#//00170000005p000000
>
http://resources.arcgis.com/en/help/main/10.1/index.html#/Update/00080000000t000000/
>
> I did not find any equivalents. Did I miss something?

Pietro,

In GDAL 1.10, Update is available as OGR_L_Update (
http://www.gdal.org/ogr/ogr__api_8h.html#a87b478c971619145dee7d8d8deeac702 ) .
This can be for example used from the Python script at
http://svn.osgeo.org/gdal/trunk/gdal/swig/python/samples/ogr_layer_algebra.py

Eliminate has no direct equivalent in GDAL, AFAIK. At first sight, the algorithm
could likely be coded with the operations on geometry already available in the
OGRGeometry class (Intersection, Length, Area).

Best regards,

Even

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