RMS Function Returns NAN

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Mark Lafrentz
Mark Lafrentz on 11 Jun 2019
Commented: Mark Lafrentz on 12 Jun 2019
I am using the 'rms' function to calculate root mean squared values. For certain portions of data, the function returns NAN. There is good, non-zero data in the array i'm inputting (2000 data points all non-zero). I know how to calculate rms values myself, but for the sake of learning, i would like to know why this is happening.

Accepted Answer

Greg Dionne
Greg Dionne on 11 Jun 2019
It's likely you have NaN in your input, or your input is an empty vector.
If you wish to exclude NaN values from computation, then you can try:
sqrt(mean(x .* x, 'omitnan'))
Hope this helps,
-Greg
  1 Comment
Mark Lafrentz
Mark Lafrentz on 12 Jun 2019
You were right. I had one NAN in my data set. Thank you!

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