How to create a sliding window function over column vector M
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Thashen Naidoo
on 24 Nov 2019
If vector M is a column of 30000 points of temperature, How do I create a sliding window function that goes from 1 to 500, 2 to 501, 3 to 502 ...till the end. So the window length is 500.
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Accepted Answer
Thiago Henrique Gomes Lobato
on 24 Nov 2019
You can easily implement a loop for this
A = [1,2,3,4,5,6]'; % Easy vector to verify output
fun = @(x)mean(x); % Your function
WindowLength = 2;
Output = zeros(length(A)-WindowLength,1);
for idx = 1:length(A)-WindowLength
Block = A(idx:idx+WindowLength);
Output(idx) = fun(Block);
end
Output
Output =
2
3
4
5
Or, if you want to have it in many places, just create a function for it:
function output = SlideFun(x,WindowLength,fun)
Output = zeros(length(x)-WindowLength,1);
for idx = 1:length(x)-WindowLength
Block = x(idx:idx+WindowLength);
Output(idx) = fun(Block);
end
end
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