Y = cumsum(X)
Y = cumsum(X)
, where X
is a vector, returns a matrix containing the cumulative sum of the elements of X
. If X
is a matrix, Y
is a matrix containing the cumulative sums over each column.
cumsum(1:5) = [1 3 6 10 15]
sum
(c) Copyright 1994 by The MathWorks, Inc.