Hello everyone! I'm hoping someone can shed some light on the use of gdalwarp for me. I'm trying to use it to effectively trim an mosaicked image of its sawtooth edges by masking the area outside a line as defined by a shapefile. I've been successful when using a single polygon such as with this command here:
gdalwarp -cutline .\shp -cl 1642 -crop_to_cutline .\1642\1642.bmp .\cutlinetest.tif Where 1642.shp is located in the .\shp directory. 1642.shp is a single polygon record extracted from a larger multi-record shape file know as 'allROIS.shp' also located at .\shp and contains a field named 'item'. The problem is that I have a whole mess of these things that i need to trim. So I was trying to use the -csql switch to reference the particular record within 'allROIs.shp' but I'm not having much luck. The command i'm issuing is: gdalwarp -cutline .\shp -csql "select * from allROIs where item = 1642" -crop_to_cutline .\1642.bmp .\cutlinetest.tif The error I'm receiving is: Cannot compute bounding box of cutline. The individual polygons within allROIs.shp overlap but are separate records. Not sure if that's significant. Any insight is appreciated. Thanks. -Dan -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Using-gdalwarp-to-effectively-trim-an-image-tp4621161p4621161.html Sent from the GDAL - Dev mailing list archive at Nabble.com. _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
