How to create a sliding window function over column vector M

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.

Answer 1

[Thiago Henrique Gomes Lobato]

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

[Jeff]

Since I found this and ran into this issue, maybe this will help someone else.

Output = zeros(length(x) + 1 - WindowLength,1);

for idx = 1:length(x) + 1 - WindowLength

Block = x(idx:idx + WindowLength - 1);

Output(idx) = fun(Block);

end