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

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

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

       r3.colors map=volume_1 color=gyr

       raster3d, color table

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

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.

       Available at: r3.colors source code (history)

       Accessed: Friday Apr 04 01:19:03 2025

       Main index | 3D raster index | Topics index | Keywords index | Graphical index | Full index

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

GRASS 8.4.1                                                                                    r3.colors(1grass)

r3.colorsr3.colors--helpr3.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,waveaspect: aspect oriented grey colors [range: map values]
            aspectcolr: aspect oriented rainbow colors [range: 0 to 360]
            bcyr: blue through cyan through yellow to red [range: map values]
            bgyr: blue through green through yellow to red [range: map values]
            blues: white to blue [range: map values]
            byg: blue through yellow to green [range: map values]
            byr: blue through yellow to red [range: map values]
            celsius: blue to red for degree Celsius temperature [range: -80 to 80]
            corine: EU Corine land cover colors [range: 111 to 995]
            curvature: for terrain curvatures (from v.surf.rst and r.slope.aspect) [range: map values]
            differences: differences oriented colors [range: map values]
            elevation: maps relative ranges of raster values to elevation color ramp [range: map values]
            etopo2: colors for ETOPO2 worldwide bathymetry/topography [range: -11000 to 8850]
            evi: enhanced vegetative index colors [range: -1 to 1]
            fahrenheit: blue to red for Fahrenheit temperature [range: -112 to 176]
            forest_cover: percentage of forest cover [range: 0 to 100]
            gdd: accumulated growing degree days [range: 0 to 6000]
            grass: GRASS GIS green (perceptually uniform) [range: map values]
            greens: white to green [range: map values]
            grey: grey scale [range: map values]
            grey.eq: histogram-equalized grey scale [range: map values]
            grey.log: histogram logarithmic transformed grey scale [range: map values]
            grey1.0: grey scale for raster values between 0.0-1.0 [range: 0 to 1]
            grey255: grey scale for raster values between 0-255 [range: 0 to 255]
            gyr: green through yellow to red [range: map values]
            haxby: relative colors for bathymetry or topography [range: map values]
            inferno: perceptually uniform sequential color table inferno [range: map values]
            kelvin: blue to red for temperature in Kelvin scale [range: 193.15 to 353.15]
            magma: perceptually uniform sequential color table magma [range: map values]
            ndvi: Normalized Difference Vegetation Index colors [range: -1 to 1]
            ndwi: Normalized Difference Water Index colors [range: -200 to 200]
            nlcd: US National Land Cover Dataset colors [range: 0 to 95]
            oranges: white to orange [range: map values]
            plasma: perceptually uniform sequential color table plasma [range: map values]
            population: color table covering human population classification breaks [range: 0 to 2e+09]
            population_dens:  color  table  covering human population density classification breaks [range: 0 to
           1e+09]
            precipitation: precipitation color table (0..2000mm) [range: 0 to 7000]
            precipitation_daily: precipitation color table (0..1000mm) [range: 0 to 10000]
            precipitation_monthly: precipitation color table (0..1000mm) [range: 0 to 1000]
            rainbow: rainbow color table [range: map values]
            ramp: color ramp [range: map values]
            random: random color table [range: map values]
            reds: white to red [range: map values]
            roygbiv:  [range: map values]
            rstcurv: terrain curvature (from r.resamp.rst) [range: map values]
            ryb: red through yellow to blue [range: map values]
            ryg: red through yellow to green [range: map values]
            sepia: yellowish-brown through to white [range: map values]
            slope: r.slope.aspect-type slope colors for raster values 0-90 [range: 0 to 90]
            soilmoisture: soilmoisture color table (0.0-1.0) [range: 0 to 1]
            srtm: color palette for Shuttle Radar Topography Mission elevation [range: -11000 to 8850]
            srtm_plus: color palette for Shuttle Radar  Topography  Mission  elevation  (with  seafloor  colors)
           [range: -11000 to 8850]
            terrain: global elevation color table covering -11000 to +8850m [range: -11000 to 8850]
            viridis: perceptually uniform sequential color table viridis [range: map values]
            water: water depth [range: map values]
            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: 0scale=float
           Scale for color rule values
           New value = (old value + offset) * scale
           Default: 1