I tried to do raster calculation and save the file to a new raster with subprocess in Python:

subprocess.run(['python', 'gdal_calc.py', '-A', image1, '-B', 'MSL_TEMP.tif', '--outfile = DEMNAS_MSL.tif', '--calc = A - B' ])

and comes with this error:

TypeError: expected str, bytes or os.PathLike object, not DatasetReader

Would you please give me the solution?


1 Answer 1


It can be run with this code:

subprocess.run(['python', 'gdal_calc.py', '-A', input1, '-B', input3, '--outfile=demnas_msl.tif', '--calc=A - B' ])

with input1 and input3 are string of input images. However, the result came in returncode =2

CompletedProcess(args=['python', 'gdal_calc.py', '-A', 'DEMNAS_KARIMUNJAWA.tif', '-B', 'msl_temp.tif', '--outfile=demnas_msl.tif', '--calc=A - B'], returncode=2) 

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