r.colors.stddev1grass
Sets color rules based on stddev from a raster map’s mean value.
Usage
r.colors.stddev
r.colors.stddev --help
r.colors.stddev [-bz]
map=name
[--help]
[--verbose]
[--quiet]
[--ui]
Keywords
raster, color table
Overview
r.colors.stddev set raster map color rules based on standard deviations from a map’s mean value, either as a continuous color gradient or in color bands per standard deviation (S.D.) from the mean.
With the color band option values less that 1 S.D. from the mean are colored green, within 1-2 S.D. are colored yellow, within 2-3 S.D. are colored red, and beyond 3 S.D. are colored black.
For a differences map there is an option to lock the center of the color table at zero. Values more than two S.D. below the mean will be colored blue; values below the mean but less than 2 S.D. away will transition to white, and above the mean the colors will simularly transition to full red at +2 S.D.
Examples
North Carolina sample dataset:
g.region raster=elevation -pr.colors.stddev elevation
Figure: Standard deviations from mean elevation
Source code
Available at: r.colors.stddev source code (history)
Accessed: Monday Feb 24 17:51:44 2025
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Releases
8 releases since Debian 6.0 (Squeeze); the text changed 7 times.