MATLAB: How can i do the rolling sum of the elements of a vector

Question

Hello everyone,

I would like to compute the rolling sum i a vector. i make an example:

A(10×1)=[1 2 3 4 5 6 7 8 9 10]

In my case i would like to obtain

B(8×1)=[6 9 12 15 18 21 24 27],

so taking a rolling window of 3 numbers, condidering ONLY the last three numbers

Answer 1

Hi,

if you use R2016a or later try movsum. For your example see especially this section:

https://de.mathworks.com/help/matlab/ref/movsum.html#bu6j0xh

Best regards

Stephan