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rraster

How to replace values by NA in stack?

Hello I am giving here a reproduc example. I have three rasters and I stacked them. I want to replace any value above 50 by NA but I am getting an error:

     r <- raster(nrows=10, ncols=10)
     r <- setValues(r, 1:ncell(r))
     r1 <- raster(nrows=10, ncols=10)
     r1 <- setValues(r1, 1:ncell(r))
     r2 <- raster(nrows=10, ncols=10)
     r2 <- setValues(r2, 1:ncell(r))
     St=stack(r,r1,r2)

     NAvalue(St) <- >50
   Error: unexpected '>=' in "NAvalue(St) =  >="

Any help?Thanks

Solution 
  • > St[9,9]
     layer.1 layer.2 layer.3
[1,]      89      89      89
> St[St >50] <- NA
> St[9,9]
     layer.1 layer.2 layer.3
[1,]      NA      NA      NA