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I am new to python and QGIS (have some experience with arcpy). I am trying to multiply two .tif files together using gdal_calc.py but I can't get it to work. It just returns the error invalid syntax. Here is the code. I am doing this in the QGIS Python command line.

gdal_calc.py -A people.tif -B places.tif --outfile=c:/test.tif --calc="A*B" --NoDataValue=0

I then tried this after reading an answer to another question, which ran and printed a number. However, it has not output a .tif file:

import os

gdal_calc =  'python C:/wheregdal_calc/islocated -Apeople.tif B-places.tif --outfile=c:/test.tif --calc="A*B"'
os.system(gdal_calc)
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  • B-places.tif should be -B places
    – Ian Turton
    Commented Aug 15, 2018 at 15:16
  • thankyou for your response, changed this and still get the same result, a number prints but no output file is created
    – Issy
    Commented Aug 15, 2018 at 16:01
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    make sure you use a space before the filenames e.g. -A people.tif -B places.tif in the python version, same as the command line
    – Steven Kay
    Commented Aug 15, 2018 at 16:26

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