Get raster field names in R

Question

Does anyone know how I can extract the raster field names (VALUE, COUNT and other existing field names on a categorical raster file) in R?

I am using the raster package to load the raster files.

Answer 1

You should first create a stack of layer(s) from your raster object.

ra <- system.file("external/test.grd")
s <- stack(ra)

#how many layers in the stack
nlayers(s)

#info about the layer stack data
print(s)

More details here:

• Introduction to the raster package
• Description of the raster file format
• raster reference manual