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Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.

NAME

r3.colors - Creates/modifies the color table associated with a 3D raster map.

KEYWORDS

raster3d, color table

SYNOPSIS

r3.colors
r3.colors --help
r3.colors [-rwldngae] [map=name[,name,...]] [file=name] [color=style] [raster=name] [raster_3d=name] [rules=name] [offset=float] [scale=float] [--help] [--verbose] [--quiet] [--ui]

Flags:

-r
Remove existing color table
-w
Only write new color table if it does not already exist
-l
List available rules then exit
-d
List available rules with description then exit
If a color rule is given, only this rule is listed
-n
Invert colors
-g
Logarithmic scaling
-a
Logarithmic-absolute scaling
-e
Histogram equalization
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog

Parameters:

map=name[,name,...]
Name of 3D raster map(s)
file=name
Input file with one map name per line
Input map names can be defined in an input file in case a large amount of maps must be specified. This option is mutual exclusive to the map option.
color=style
Name of color table
Options: aspect, aspectcolr, bcyr, bgyr, blues, byg, byr, celsius, corine, curvature, differences, elevation, etopo2, evi, fahrenheit, forest_cover, gdd, grass, greens, grey, grey.eq, grey.log, grey1.0, grey255, gyr, haxby, inferno, kelvin, magma, ndvi, ndwi, nlcd, oranges, plasma, population, population_dens, precipitation, precipitation_daily, precipitation_monthly, rainbow, ramp, random, reds, roygbiv, rstcurv, ryb, ryg, sepia, slope, soilmoisture, srtm, srtm_plus, terrain, viridis, water, wave
aspect aspect: aspect oriented grey colors [range: map values]
aspectcolr aspectcolr: aspect oriented rainbow colors [range: 0 to 360]
bcyr bcyr: blue through cyan through yellow to red [range: map values]
bgyr bgyr: blue through green through yellow to red [range: map values]
blues blues: white to blue [range: map values]
byg byg: blue through yellow to green [range: map values]
byr byr: blue through yellow to red [range: map values]
celsius celsius: blue to red for degree Celsius temperature [range: -80 to 80]
corine corine: EU Corine land cover colors [range: 111 to 995]
curvature curvature: for terrain curvatures (from v.surf.rst and r.slope.aspect) [range: map values]
differences differences: differences oriented colors [range: map values]
elevation elevation: maps relative ranges of raster values to elevation color ramp [range: map values]
etopo2 etopo2: colors for ETOPO2 worldwide bathymetry/topography [range: -11000 to 8850]
evi evi: enhanced vegetative index colors [range: -1 to 1]
fahrenheit fahrenheit: blue to red for Fahrenheit temperature [range: -112 to 176]
forest_cover forest_cover: percentage of forest cover [range: 0 to 100]
gdd gdd: accumulated growing degree days [range: 0 to 6000]
grass grass: GRASS GIS green (perceptually uniform) [range: map values]
greens greens: white to green [range: map values]
grey grey: grey scale [range: map values]
grey.eq grey.eq: histogram-equalized grey scale [range: map values]
grey.log grey.log: histogram logarithmic transformed grey scale [range: map values]
grey1.0 grey1.0: grey scale for raster values between 0.0-1.0 [range: 0 to 1]
grey255 grey255: grey scale for raster values between 0-255 [range: 0 to 255]
gyr gyr: green through yellow to red [range: map values]
haxby haxby: relative colors for bathymetry or topography [range: map values]
inferno inferno: perceptually uniform sequential color table inferno [range: map values]
kelvin kelvin: blue to red for temperature in Kelvin scale [range: 193.15 to 353.15]
magma magma: perceptually uniform sequential color table magma [range: map values]
ndvi ndvi: Normalized Difference Vegetation Index colors [range: -1 to 1]
ndwi ndwi: Normalized Difference Water Index colors [range: -200 to 200]
nlcd nlcd: US National Land Cover Dataset colors [range: 0 to 95]
oranges oranges: white to orange [range: map values]
plasma plasma: perceptually uniform sequential color table plasma [range: map values]
population population: color table covering human population classification breaks [range: 0 to 2e+09]
population_dens population_dens: color table covering human population density classification breaks [range: 0 to 1e+09]
precipitation precipitation: precipitation color table (0..2000mm) [range: 0 to 7000]
precipitation_daily precipitation_daily: precipitation color table (0..1000mm) [range: 0 to 10000]
precipitation_monthly precipitation_monthly: precipitation color table (0..1000mm) [range: 0 to 1000]
rainbow rainbow: rainbow color table [range: map values]
ramp ramp: color ramp [range: map values]
random random: random color table [range: map values]
reds reds: white to red [range: map values]
roygbiv roygbiv: [range: map values]
rstcurv rstcurv: terrain curvature (from r.resamp.rst) [range: map values]
ryb ryb: red through yellow to blue [range: map values]
ryg ryg: red through yellow to green [range: map values]
sepia sepia: yellowish-brown through to white [range: map values]
slope slope: r.slope.aspect-type slope colors for raster values 0-90 [range: 0 to 90]
soilmoisture soilmoisture: soilmoisture color table (0.0-1.0) [range: 0 to 1]
srtm srtm: color palette for Shuttle Radar Topography Mission elevation [range: -11000 to 8850]
srtm_plus srtm_plus: color palette for Shuttle Radar Topography Mission elevation (with seafloor colors) [range: -11000 to 8850]
terrain terrain: global elevation color table covering -11000 to +8850m [range: -11000 to 8850]
viridis viridis: perceptually uniform sequential color table viridis [range: map values]
water water: water depth [range: map values]
wave wave: color wave [range: map values]
raster=name
Raster map from which to copy color table
raster_3d=name
3D raster map from which to copy color table
rules=name
Path to rules file
"-" to read rules from stdin
offset=float
Offset for color rule values
New value = (old value + offset) * scale
Default: 0
scale=float
Scale for color rule values
New value = (old value + offset) * scale
Default: 1

Table of contents

DESCRIPTION

r3.colors has exactly the same functionality as r.colors but for 3D raster maps. Please refer to r.colors.

EXAMPLES

r3.colors map=volume_1 color=gyr

SEE ALSO

r.colors, r.colors.out, r3.colors.out, v.colors, v.colors.out

See also wiki page Color tables (from GRASS User Wiki)

ColorBrewer is an online tool designed to help people select good color schemes for maps and other graphics.

AUTHORS

Michael Shapiro and David Johnson
Support for 3D rasters by Soeren Gebbert

SOURCE CODE

Available at: r3.colors source code (history)

Latest change: Monday Feb 07 22:06:13 2022 in commit: 150a0e9242b9f01b7bf0fcfa46dc753fb75ed02e

Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.

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