How to solve rms calculation problem ?

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I have the following error:
Undefined function 'rms' for input a
rguments of type 'double'.

Accepted Answer

Azzi Abdelmalek
Azzi Abdelmalek on 6 May 2016
The rms function requires a signal processing toolbox
  1 Comment
Leonardo Wayne
Leonardo Wayne on 6 May 2016
Thanks. It worked before though, so its a bit weird. I just solved it using: outrms = sqrt(mean(y.^2))

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