d.correlate
Prints a graph of the correlation between raster maps (in pairs).
d.correlate map=name [,name,...] [--verbose] [--quiet] [--qq] [--ui]
Example:
d.correlate map=name
grass.script.run_command("d.correlate", map, verbose=False, quiet=False, superquiet=False)
Example:
gs.run_command("d.correlate", map="name")
Parameters
map=name [,name,...] [required]
Name of raster map(s)
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--qq
Very quiet module output
--ui
Force launching GUI dialog
map : str | list[str], required
Name of raster map(s)
Used as: input, raster, name
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
d.correlate displays graphically the results of a r.stats analysis run on two raster map layers. This module highlights the correlation (or lack of it) among data layers (scattergram).
The results are displayed in the active display frame on the user's
graphics monitor. d.correlate erases the active frame before
displaying results. If no graphics monitor is open, a file map.png
is
generated in the current directory.
NOTES
If three or four map layers are specified, the correlation among each combination of two data layers is displayed.
EXAMPLE
Scatterplot of two LANDSAT TM7 channels (North Carolina sample dataset):
g.region raster=lsat7_2002_30 -p
d.correlate map=lsat7_2002_30,lsat7_2002_40
Scatterplot of two LANDSAT TM7 channels
SEE ALSO
d.text, d.graph, r.coin, r.regression.line, r.stats
AUTHORS
Michael Shapiro, U.S.Army Construction Engineering Research Laboratory
Rewritten to GRASS 6 (from csh to sh) by Markus Neteler; from sh to Python by Glynn Clements
SOURCE CODE
Available at: d.correlate source code
(history)
Latest change: Wednesday Feb 12 23:02:46 2025 in commit 9c11460