Vincent, The simplest way is to build the vrt using gdalbuildvrt with the option '-vrtnodata'. Any pixel with no data(including areas with no files) will have the value specified with that option. Refer to http://www.gdal.org/gdalbuildvrt.html
On Tue, Apr 27, 2010 at 6:24 PM, Vincent Honnet < vincent.hon...@external.thalesgroup.com> wrote: > Hi, > > I would like to do something like a picking on a vrt. > Let me explain: > I have vrt's from GTiff files but there is some holes, areas where there > isn't any data. > From an area defined by its coordinates I would like to get the information > if this area is pointing on a file or not, or at least on data or not. > Is there a way to do that ? I'm using GDal 1.7. > > Thanks a lot in advance, > > Vincent > > > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/gdal-dev > -- Best regards, Chaitanya kumar CH. /tʃaɪθənjə/ /kʊmɑr/ +91-9848167848 17.2416N 80.1426E
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