1GDALCOMPARE(1)                       GDAL                       GDALCOMPARE(1)
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NAME

6       gdalcompare -  Compare two images.
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SYNOPSIS

9          gdalcompare.py [-sds] golden_file new_file
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DESCRIPTION

12       The  gdalcompare.py  script  compares  two  GDAL supported datasets and
13       reports the differences. In addition to reporting  differences  to  the
14       standard output the script will also return the difference count in its
15       exit value.
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17       Image pixels, and various metadata are checked. There is also a byte by
18       byte  comparison  done  which will count as one difference. So if it is
19       only important that the GDAL visible data  is  identical  a  difference
20       count of 1 (the binary difference) should be considered acceptable.
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22       -sds   If  this  flag is passed the script will compare all subdatasets
23              that are part of the dataset, otherwise subdatasets are ignored.
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25       <golden_file>
26              The file that is considered correct, referred to as  the  golden
27              file.
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29       <new_file>
30              The  file  being compared to the golden file, referred to as the
31              new file.
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33       Note that the gdalcompare.py script can also be  called  as  a  library
34       from  python  code  though  it  is not typically in the python path for
35       including.  The primary  entry  point  is  gdalcompare.compare()  which
36       takes  a  golden  gdal.Dataset  and a new gdal.Dataset as arguments and
37       returns a difference count (excluding the binary comparison). The gdal‐
38       compare.compare_sds() entry point can be used to compare subdatasets.
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AUTHOR

41       Frank Warmerdam <warmerdam@pobox.com>
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44       1998-2021
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49                                 Jan 05, 2021                   GDALCOMPARE(1)
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