[gdal-dev] intersection between vector and raster

[Steve.Toutant at inspq.qc.ca]

Hello!
I already use gdal_Rasterize to burn pixels that are within or outside 
some polygons of a vector dataset.
But I would like to do the opposite, keep polygons from a vector dataset 
based on a the value of the pixel of a raster dataset. Per example, keep 
polygons where the pixel's value is greater that 205.

Is there a gdal utlity I could use to do that without programming?
thanks
Steve


Steve Toutant, M. Sc.
Analyste en géomatique
Secteur environnement
Direction des risques biologiques, environnementaux et occupationnels
Institut national de santé publique du Québec
945, avenue Wolfe
Québec, Qc G1V 5B3 
Tél.: (418) 650-5115 #5281
Fax.: (418) 654-3144
steve.toutant at inspq.qc.ca
http://www.inspq.qc.ca
 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/gdal-dev/attachments/20090827/ea6d91f2/attachment.html