How to you use GDAL to subset a smaller raster from a bigger one given the bounding coordinates?
- 1See gfoss.blogspot.it/2008/06/gdal-raster-data-tips-and-tricks.html --> Extracting spatial subset (subregion)markusN– markusN2012-10-03 06:59:42 +00:00Commented Oct 3, 2012 at 6:59
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2 Answers
gdal_translate -projwin ulx uly lrx lry inraster.tif outraster.tif` Or
gdal_translate -srcwin xoff yoff xsize ysize inraster.tif outraster.tif
-projwin ulx uly lrx lry: Selects a subwindow from the source image for copying with the corners given in georeferenced coordinates.
-srcwin xoff yoff xsize ysize: Selects a subwindow from the source image for copying based on pixel/line location.
EDIT: Can you subset a region from a vrt ?
gdal_translate -projwin ulx uly lrx lry inraster.vrt outraster.tif gdal_translate -of VRT -projwin ulx uly lrx lry inraster.tif outraster.vrt 
If you are using c++ coding in gdal , then yes, you can subset with VRTDataset(), here you can give your desired size of subset in vrtcreate(xsize,ysize) and then saving it with using createcopy().
