MATLAB Function Reference |
Syntax
Description
B = cumsum(A)
returns the cumulative sum along different dimensions of an array.
If A
is a vector, cumsum(A)
returns a vector containing the cumulative sum of the elements of A.
If A
is a matrix, cumsum(A)
returns a matrix the same size as A
containing the cumulative sums for each column of A
.
If A
is a multidimensional array, cumsum(A)
works on the first nonsingleton dimension.
B = cumsum(A,dim)
returns the cumulative sum of the elements along the dimension of A
specified by scalar dim
. For example, cumsum(A,1)
works across the first dimension (the rows).
Examples
cumsum(1:5) ans = [1 3 6 10 15] A = [1 2 3; 4 5 6]; cumsum(A) ans = 1 2 3 5 7 9 cumsum(A,2) ans = 1 3 6 4 9 15
See Also
cumprod | cumtrapz |
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