cumsumc

Purpose

Computes the cumulative sums of the columns of a matrix.

Format

y = cumsumc(x)

Parameters:

x (NxK matrix)

Returns:

y (NxK matrix) – containing the cumulative sums of the columns of x.

Examples

x = { 1 -3,
      2  2,
      3 -1 };

y = cumsumc(x);

Now if you view y, you will see:

    1.000 -3.000
y = 3.000 -1.000
    6.000 -2.000

Remarks

This is based on the recursive series function recserar(). recserar() could be called directly as follows:

recserar(x, x[1, .], ones(1, cols(x)))

to accomplish the same thing.

Source

cumsumc.src

See also

Functions cumprodc(), recsercp(), recserar()