2011年5月24日星期二

Form row and column sums and means for numeric arrays

Form row and column sums and means for numeric arrays.

Usage

colSums (x, na.rm = FALSE, dims = 1)
rowSums (x, na.rm = FALSE, dims = 1)
colMeans(x, na.rm = FALSE, dims = 1)
rowMeans(x, na.rm = FALSE, dims = 1)
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