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Reduce data points from 200 to 108

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Maxwell Barton
Maxwell Barton on 21 Nov 2019
Commented: Daniel M on 21 Nov 2019
I have a data series with 200 data points and I need to compress this information to 108 data points. I don't think I can use a moving average filter as the window wouldn't be an integer so is there a way in MATLAB to do this?

Accepted Answer

Star Strider
Star Strider on 21 Nov 2019
I have no idea what your data are or what you want to do with them, other than reduce the number of them.
Interpolating them to a shorter independent variable vector may be an option. See if the interp1 function can do what you want. The linspace function can be helpful in providing the new independent variable vector.
  3 Comments
Star Strider
Star Strider on 21 Nov 2019
As always, my pleasure!

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More Answers (1)

Daniel M
Daniel M on 21 Nov 2019
Edited: Daniel M on 21 Nov 2019
Do you want to:
  1. truncate your signal?
  2. downsample or resample
  3. interpolate
  4. something else?
Truncate example:
t = 1:200;
x = rand(1,200);
x2 = x(1:108);
  2 Comments
Daniel M
Daniel M on 21 Nov 2019
That's what resampling function is for. Star Strider has responded under his answer.

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