r.colors.stddev - Sets color rules based on stddev from a raster map’s mean value.

       Hamish Bowman, Dunedin,NewZealand

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:
       g.region raster=elevation -p
       r.colors.stddev elevation
       Figure:Standarddeviationsfrommeanelevation

       raster, color table

r.colors.stddev  - Sets color rules based on stddev from a raster map’s mean value.

r.colors,r.univar,v.colors

       Available at: r.colors.stddev source code (history)

       Accessed: Friday Apr 04 01:21:11 2025

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       © 2003-2025 GRASS Development Team, GRASS GIS 8.4.1 Reference Manual

GRASS 8.4.1                                                                              r.colors.stddev(1grass)

r.colors.stddevr.colors.stddev--helpr.colors.stddev [-bz] map=name  [--help]  [--verbose]  [--quiet]  [--ui]

   Flags:-b
           Color using standard deviation bands

       -z
           Force center at zero

       --help
           Print usage summary

       --verbose
           Verbose module output

       --quiet
           Quiet module output

       --ui
           Force launching GUI dialog

   Parameters:map=name[required]
           Name of raster map