How to check the sum of a fixed row interval, as the interval steps forward by 1 throughout a 8784x1 vector?

I've tried to use the reshape command, but the following;

reshape(sum(reshape(sensor_data,6,[])),[],1)

only summing 6 rows succesive at each calculation. I want to iteratively move (by 1) the fixed 6-row interval throughout the 8784 rows calculating the sum of that specific interval at each step.

[James Tursa]

Please provide a short example. E.g., with a specific 24-element vector (1:24)', what would be the desired result?

[Sebastian Engelsgaard]

Example: vector = randi([0 1], 24,1) %A 24x1 vector consiting of ones and zeros. Summing rows from 1 to 4 maybe results in 3, whereas summing 2 to 5 results in 1 dependent on randi function. Both of above-mentioned range of rows is 4. It has to sum row 1 to 4, and hereafter 2 to 5, and this is followed by the sum of 3-6. This is done until reaching the 24th element. Aiming this operation, i'll try to use a if-loop to check whether these sums is >, < or equal to 2.

Answer 1

[Star Strider]

The movsum (link) function (introduced in R2016a) will probably do what you want.

[Sebastian Engelsgaard]

Could the same be obtained using a loop?

[Cedric]

Why do you need a loop? If it is because you have an older version of MATLAB, use

 mSum = conv(data, ones(1,4)) ;

instead of movsum. In any case, then you can operate in a vector fashion on the output.

[Star Strider]

@Cedric — Thank you!

[Cedric]

Hi Star, my pleasure!

(I had 5 minutes to kill on my cell phone while waiting for someone, and that did the trick ;) )