NAME
r.colors.stddev - Sets color rules based on stddev from a raster map's mean value.
KEYWORDS
raster,
color table
SYNOPSIS
r.colors.stddev
r.colors.stddev --help
r.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
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 raster=elevation -p
r.colors.stddev elevation
r.colors,
r.univar,
v.colors
Hamish Bowman,
Dunedin, New Zealand
SOURCE CODE
Available at:
r.colors.stddev source code
(history)
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GRASS Development Team,
GRASS GIS 7.9.dev Reference Manual