Raster_overlay_fist_cover_second_except_zero.rsx

##Raster processing=group
##First cover second except zero=name
##Raster_A=raster
##Raster_B=raster
##NA_Value=number 0
##Covered=output raster
Raster_A[Raster_A==NA_value] <- NA
Covered <- cover(Raster_A, Raster_B)