Replace colours in a native raster
     
    
    
    Arguments
- nr
- nativeRaster
 
- old
- Vector of old colours 
- new
- Vector of replacement colours 
 
    
    Value
    Original nativeRaster modified in-place
     
    
    Examples
    nr <- nr_new(10, 10, 'hotpink')
nr_replace(nr, 'hotpink', 'grey80')
plot(nr)
