RMS Function Returns NAN

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Mark Lafrentz
Mark Lafrentz 2019-6-11
评论： Mark Lafrentz 2019-6-12
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.

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Greg Dionne
Greg Dionne 2019-6-11
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
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Mark Lafrentz
Mark Lafrentz 2019-6-12
You were right. I had one NAN in my data set. Thank you!

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