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rplotmaskr-raster

Color of NA-values after using mask

Is there any way to change the color of NA-values in R? I have masked out some values in a raster stack and was wondering, if I can change the color of the masked values from white to e.g. yellow? I am using plotRGB for plotting my masked raster files.

Solution

  • I am not familiar with plotRGB, but it belongs also to the raster package with the same function colNA, which is described in ?colNA as "color for the background (NA values)".

    library(raster)

#simulating missing values
tg<-matrix(1:15,nrow=3)
tg[2,3]<-NA
tg[1,5]<-NA

#rasterize
tg_raster<-raster(tg)

#normal plot
plot(tg_raster)

#replace NAs with blue color
plot(tg_raster,colNA="blue")