File: stinteraction.R

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r-cran-spacetime 1.2-8%2Bdfsg-1
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stInteraction <- function(x, ...) { 
	stopifnot(is(x, "STFDF"))
	for (i in 1:(dim(x)[3])) {
		y = as(x[,,i], "xts")
		x[[i]] = as.vector(t(y - (rowMeans(y, ...) %o% colMeans(y, ...))/mean(y, ...)))
	}
	x
}