terra: colors – R documentation

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colors

Color table

Description

Get or set color table(s) associated with a SpatRaster. Color tables are used for associating colors with values, for use in mapping (plot).

Usage

## S4 method for signature 'SpatRaster'
coltab(x)

## S4 replacement method for signature 'SpatRaster'
coltab(x, layer=1)<-value

Arguments

`x`	SpatRaster
`layer`	positive integer, the layer number or name
`value`	a three (red,green,blue) or four (alpha) column data.frame with no more than 256 rows; or NULL to remove the color table

Value

data.frame

Examples

r <- rast(ncol=3, nrow=2, vals=0:5)
coltb <- data.frame(t(col2rgb(rainbow(6, end=.9), alpha=TRUE)))
coltb

plot(r)
coltab(r) <- coltb
plot(r)

tb <- coltab(r)
class(tb)
dim(tb[[1]])

terra

Spatial Data Analysis

v1.2-10

GPL (>= 3)

Authors

Robert J. Hijmans [cre, aut] (<https://orcid.org/0000-0001-5872-2872>), Roger Bivand [ctb] (<https://orcid.org/0000-0003-2392-6140>), Karl Forner [ctb], Jeroen Ooms [ctb] (<https://orcid.org/0000-0002-4035-0289>), Edzer Pebesma [ctb] (<https://orcid.org/0000-0001-8049-7069>)

Initial release

2021-05-12