MATLAB: How to circ_mean every 5 elements

mean

I have a 320×15 vector, which I want to reduce to 64×15 by getting the circ_mean of every 5 elements down each column. Is there a way to do this?

Best Answer

hello
demo code below : 
% dummy data
data = rand(320,15);
buffer = 5;    % nb of samples for averaging 
% zero overlap mean averaging
[m,n] = size(data)
for ci=1:fix(length(data)/ buffer)
    start_index = 1+(ci-1)*buffer;
    stop_index = min(start_index+ buffer,length(data));
    time_index(ci) = round((start_index+stop_index)/2);  % time index expressed as sample unit (dt = 1 in this simulation)
    avg_data(ci,:) =mean(data(start_index:stop_index,:));  % 
end
figure(1),
plot(time_index,avg_data);
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