Note: A new GRASS GIS stable version has been released: GRASS GIS 7, available here. And see the new manual page here
r.colors.stddev - Set color rules based on stddev from a map's mean value.
raster, color table
r.colors.stddev [-bz] input=name [--verbose] [--quiet]
- Color using standard deviation bands
- Force center at zero
- Verbose module output
- Quiet module output
- Name of input raster map
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.
North Carolina sample dataset location:
g.region rast=elevation -p
Hamish Bowman, Dunedin, New Zealand
Last changed: $Date: 2016-05-16 03:36:25 -0700 (Mon, 16 May 2016) $
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