Modified z-score for a raster
Calculates the modified z-score for all cells in a raster
raster.Zscore(x, p.value = FALSE, file.name = NULL, ...)
x |
A raster class object |
p.value |
Return p-value rather than z-score raster (FALSE/TRUE) |
file.name |
Name of raster written to disk |
... |
Additional arguments passed to writeRaster |
raster class object or raster written to disk
Since this functions needs to operate on all of the raster values, it is not memory safe
Jeffrey S. Evans <jeffrey_evans@tnc.org>
library(raster)
r <- raster(nrows=824, ncols=767, xmn=2451905, xmx=3218905,
ymn=-2744771, ymx=-1920771, resolution = 5000)
r[] <- runif(ncell(r), 0, 1)
# Modified z-score
z <- raster.Zscore(r)
# P-value
p <- raster.Zscore(r, p.value = TRUE)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.