[gdal-dev] Re: Using gdalwarp to effectively trim an image

[drshinnick]

The problem seems to have been related to the presence of a .prj file with
the .shp file.

using the command

gdalwarp -cutline .\shp -cl allROIs -cwhere "Item = 1642" .\1642\1642.bmp
.\1642.tif

seems to fail to compute cutline bounding box when there is a .prj file
present for the .shp and the target image has no georeference embeded as
with a geotiff.  Here in this case I was trying to trim a .bmp so that was
that I think was the reason.

However remove the .prj from the .\shp directory and it works! 
Alternatively, I can specify the -s_srs and -t_srs as the same and this also
works although it does throw a warning that the input vector layer has an
srs while the raster does not.  As long as the two are in the same
projection.  No problem I think.


-Dan



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