d.correlate1grass
Prints a graph of the correlation between raster maps (in pairs).
Usage
d.correlate
d.correlate --help
d.correlate map=name
[,name, ...]
[--help]
[--verbose]
[--quiet]
[--ui]
Keywords
display, statistics, raster, diagram, correlation
Overview
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.
Examples
Scatterplot of two LANDSAT TM7 channels (North Carolina sample dataset):
g.region raster=lsat7_2002_30 -pd.correlate map=lsat7_2002_30,lsat7_2002_40
Scatterplot of two LANDSAT TM7 channels
Source code
Available at: d.correlate source code (history)
Accessed: Monday Feb 24 17:51:43 2025
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Releases
9 releases since Debian 5.0 (Lenny); the text changed 8 times.