MATLAB: How to filter data

filtersubsample

Dear all,
I want to filter a matrix by its date vector. The datevector has the format: dd.mm.yyyy HH:MM:SS. I want to sum up all the data with the same month and year. How can I do that?

Best Answer

dateAsString = {'31.02.2013 11:22:33'; '31.05.2013 11:22:33'}
dateAsVector = datevec(datestr, 'dd.mm.yyyy HH:MM:SS');
yearAndMonth = 100 * dateAsVector(:, 1) + dateAsVector(:, 2);
Now you get values like [201302, 201305] and summing can be done by accumarray directly.
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