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Cummulative sums
CumSum(X, dimens = 1)
A matrix of the same size as X with cummulative sums within each row or each column
Data Matrix
Dimension for summing
Jose Luis Vicente Villardon
Cummulative sums within rows (dimens=1) or columns (dimens=2) of a data matrix
data(wine) X=wine[,4:21] CumSum(X,1) CumSum(X,2)
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