Created
October 30, 2017 23:57
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Faster standard deviation of RasterStack objects
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| rast_sd <- function(x) { | |
| # x: a RasterStack | |
| n <- nlayers(x) | |
| m <- mean(x) | |
| devsq <- (x - m)^2 | |
| sqrt(sum(devsq)/(n-1)) | |
| } |
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