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()