MATLAB: How to reduce the number of data points in a time series data.

time serieststool

I have an experimental time series data consisting of 1,00,000 data points.Analysis of this long data consuming a lot of time.Is there any method to reduce the data points (say to 10,000 data points only)with out losing the information in the signal.

Best Answer

Use downsample function: http://www.mathworks.com/help/signal/ref/downsample.html

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MATLAB: Random pair data.

"not all y are use". My guess is that you want something like:

    y = 5 + randperm( 5, 5 );
    for x = 1:5
      fprintf('%d -> %d\n', x, y(x) );
    end

Best Answer

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