Luis, On Tue, Sep 11, 2012 at 11:14 AM, Luis Lisboa <luislisboa1...@gmail.com> wrote: > Hi Eli > Probably I was not clear: When I use this it outputs a geotiff with two > bands: 1 with the real data and another one with the mask of the pixels that > fall inside each polygon. I just want to have an output file with one band > (band 1) and without the mask. Is it possible?
Sometime images can clean up just be running them through gdal_translate. -ot or -b or -mask or some combination may additionally be needed. http://gdal.org/gdal_translate.html Does gdal_translate on your file collapse the mask band into a single band with no data values? rgb2pct.py can be used to convert RGB/RGBA to single band with a color table. I'm not sure if it would work with a two band image, one being the mask but you can try it and see what it does. HTH, Eli > Thanks > Luis > > > > On Thu, Sep 6, 2012 at 4:50 AM, Eli Adam <ea...@co.lincoln.or.us> wrote: >> >> Luis, >> >> On Wed, Sep 5, 2012 at 3:00 AM, Luis Lisboa <luislisboa1...@gmail.com> >> wrote: >> > Thank you Chitanya. >> > But it created an output file with two layers (one with the values from >> > original file and another with a 255 for the pixels thar are inside KMZ >> > file: How can I have produce one layer? >> >> I may be thinking of something else based on your description. If you >> got an output that has the original values in the area of the kmz and >> an alpha mask band over the other areas I think that would be >> expected. You can also use -crop_to_cutline to remove that 'extra' >> data. >> >> If that isn't what you are talking about, you may want to use ogr2ogr >> to convert your kmz to a shapefile in the same projection as your >> input raster and see if it gives you a better result. >> >> Bests, Eli >> >> >> > Thanks >> > Luis >> > On Mon, Sep 3, 2012 at 5:10 PM, Chaitanya kumar CH >> > <chaitanya...@gmail.com> >> > wrote: >> >> >> >> Luis, >> >> >> >> gdalwarp has some options for this exact purpose. >> >> The cutline can be from any of the OGR readable datasource. >> >> >> >> http://www.gdal.org/gdalwarp.html >> >> >> >> On Mon, Sep 3, 2012 at 9:34 PM, Luis Lisboa <luislisboa1...@gmail.com> >> >> wrote: >> >>> >> >>> Greetings >> >>> I have a raster file (Geotiff) and I have a KML file with a polygon >> >>> and I >> >>> want to cut raster map to only have valid values inside the polygon. >> >>> How can >> >>> I do this using just GDAL? >> >>> >> >>> Usually I used to cut geotiff file with gdalwarp and but in those >> >>> cases I >> >>> was cutting a square (xmin xmax ymin ymax) and in this case is a more >> >>> complex polygon >> >>> >> >>> Thanks >> >>> Regards, >> >>> Luis >> >>> >> >>> _______________________________________________ >> >>> gdal-dev mailing list >> >>> gdal-dev@lists.osgeo.org >> >>> http://lists.osgeo.org/mailman/listinfo/gdal-dev >> >> >> >> >> >> >> >> >> >> -- >> >> Best regards, >> >> Chaitanya kumar CH. >> >> >> >> +91-9494447584 >> >> 17.2416N 80.1426E >> > >> > >> > >> > _______________________________________________ >> > gdal-dev mailing list >> > gdal-dev@lists.osgeo.org >> > http://lists.osgeo.org/mailman/listinfo/gdal-dev > > _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev