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Change a categorical layer into one or more numerical layers. With as.numeric you can transfer the active category values to cell values in a non-categorical SpatRaster. catalyze createss new layers for each category.
# S4 method for SpatRaster
as.numeric(x, index=NULL, filename="", ...)# S4 method for SpatRaster
catalyze(x, filename="", ...)
SpatRaster
SpatRaster
positive integer, indicating the column in data.frame value to be used as the category, skipping the first column with the ID. If NULL the active category is used
character. Output filename
additional arguments for writing files as in writeRaster
activeCat, cats
set.seed(0)
r <- rast(nrows=10, ncols=10)
values(r) <- sample(3, ncell(r), replace=TRUE) + 10
d <- data.frame(id=11:13, cover=c("forest", "water", "urban"), letters=letters[1:3], value=10:12)
levels(r) <- d
catalyze(r)
activeCat(r) <- 3
as.numeric(r)
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