GRASS logo

Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.

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)

Table of contents

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
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: Monday Dec 07 03:58:42 2020 in commit: 7f212fc320da4a8d541f1692e8a130022e9bb9e0


Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.

Main index | Display index | Topics index | Keywords index | Graphical index | Full index

© 2003-2023 GRASS Development Team, GRASS GIS 7.8.9dev Reference Manual