Best way to get values of a raster that are not masked?
Hi Jonathan, The function rasterToPoints does that. Its default behavior is to returns a matrix with coordinates and values for all cells that are not NA. You can also ask for cells with a specific range of values, and for a SptialPointDataFrame. Robert On Wed, Jun 2, 2010 at 5:27 PM, Jonathan Greenberg
<greenberg at ucdavis.edu> wrote:
I've got a file and a mask (1s for "good data", NAs for "bad"), and I want to extract the cell values AND geographic coordinates of these cells into a data frame or vector that correspond to the locations where the mask is 1 -- what is the best practice for doing this? ?I can loop through each row/block and do the query, but is there a "cleaner" way of approaching this in raster()? --j
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