Search code examples
rterra

R terra tif import colormap

When importing a .tif raster with terra::rast(), also a colormap is imported. Is there any way to force the function to not import the colormap, or to set it to NULL to use the default plot color palette?

You can see the color table with:

terra::coltab()
Solution

  • Example data

    library(terra)
r <- rast(ncols=3, nrows=2, vals=0:5)
coltb <- data.frame(t(col2rgb(rainbow(6, end=.9), alpha=TRUE)))
coltab(r) <- coltb

    Normally, you should be able to do

    coltab(r) <- NULL

    But I see that the CRAN version has a bug (now solved in version 1.4-5). To work around it, you can do

    coltab(r, 2) <- NULL