What format do you want the alphas channel in after running
gdal_polygonize.py? I ask because after processing you could open the input
and read just the alpha band (band 4 I assume). Here is a short script
framework that might get you started.
Something like:
from osgeo import gdal
gdal.open(i
I have a very large raster file with data in the alpha band. I need to
vectorize it and associate band 4 data with resulting polygons.
Is there anyway to preserve alpha channel data or get that data associated
with vectorized file after using gdal_polygonize.py?
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