g.compare.md5

Checks if two GRASS GIS maps are identical.

g.compare.md5 [-gct] ainput=name binput=string type=datatype [,datatype,...] [--verbose] [--quiet] [--qq] [--ui]

Example:

g.compare.md5 ainput=name binput=string type=raster

grass.script.parse_command("g.compare.md5", ainput, binput, type="raster", flags=None, verbose=False, quiet=False, superquiet=False)

Example:

gs.parse_command("g.compare.md5", ainput="name", binput="string", type="raster")

Parameters

Command linePython (grass.script)

ainput=name [required]
    Name of first map to check
binput=string [required]
    Name of second map to check
type=datatype [,datatype,...] [required]
    Data type(s)
    Allowed values: raster, vector
    Default: raster
-g
    Return output in shell script style (0 fail, 1 success)
-c
    Does not consider the color table for raster
-t
    Does not consider the topology for vector
--help
    Print usage summary
--verbose
    Verbose module output
--quiet
    Quiet module output
--qq
    Very quiet module output
--ui
    Force launching GUI dialog

ainput : str, required
    Name of first map to check
    Used as: input, file, name
binput : str, required
    Name of second map to check
    Used as: input, file
type : str | list[str], required
    Data type(s)
    Used as: datatype
    Allowed values: raster, vector
    Default: raster
flags : str, optional
    Allowed values: g, c, t
    g
        Return output in shell script style (0 fail, 1 success)
    c
        Does not consider the color table for raster
    t
        Does not consider the topology for vector
verbose: bool, optional
    Verbose module output
    Default: False
quiet: bool, optional
    Quiet module output
    Default: False
superquiet: bool, optional
    Very quiet module output
    Default: False

DESCRIPTION

g.compare.md5 is a module that checks if two GRASS maps are identical. It uses the MD5 cryptographic hash function. For vector map layers it does not check if the attribute table(s) are identical, too.

EXAMPLE

North Carolina example, with elevation map:

# copy a raster map
g.copy raster=elevation,dem

# now check and return TRUE
g.compare.md5 ainput=elevation binput=dem

# now change the color table
r.colors map=dem color=srtm

# check again and it should return FALSE
g.compare.md5 ainput=elevation binput=dem

# but when adding the -c flag (ignore color table), TRUE is returned
g.compare.md5 -c ainput=elevation binput=dem

AUTHOR

Luca Delucchi, Fondazione Edmund Mach, Research and Innovation Centre, Department of Biodiversity and Molecular Ecology, GIS and Remote Sensing Unit, Italy

SOURCE CODE

Available at: g.compare.md5 source code (history)
Latest change: Thursday Feb 20 13:02:26 2025 in commit 53de819