d.correlate (1)
NAME
d.correlate - Prints a graph of the correlation between raster maps (in pairs).
KEYWORDS
display, statistics, raster, diagram, correlation
SYNOPSIS
d.correlate
d.correlate --help
d.correlate map=name[,name,...] [--help] [--verbose] [--quiet] [--ui]
Flags:
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog
Parameters:
map=name[,name,...] [required]
Name of raster map(s)
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
Last changed: $Date: 2015-10-27 18:40:48 +0100 (Tue, 27 Oct 2015) $
SOURCE CODE
Available at: d.correlate source code (history)
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2003-2017 GRASS Development Team, GRASS GIS 7.2.1 Reference Manual