Calculating Mean Square Error

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Maria
Maria on 19 Apr 2014
Commented: Image Analyst on 28 Feb 2017
What will be the code of the function for calculating Mean Square Error
  3 Comments
Christy Lentz
Christy Lentz on 27 Feb 2017
What happens when the returned value is NaN? I'm using 2 arrays of observational measurements and then simulation measurements and trying to find the MSE, but upon using this algorithm I get a NaN back.
Image Analyst
Image Analyst on 28 Feb 2017
What do you want to do when there's a nan. You know there is a 'omitnans' option to mean() don't you?

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Accepted Answer

Image Analyst
Image Analyst on 20 Apr 2014
OK so we know the desired signal, at least you could if you made up the equation for it. But what is the actual signal? Do you have that in some array, perhaps that you read in from some kind of position sensor or image analysis? To calculate MSE you need to have two signals - the desired/true signal, and your actual/test signal. Then just do
MSE = mean((desired - mean).^2);
  5 Comments
Maria
Maria on 21 Apr 2014
Dear Mr Image Analyst many thanks to you , I will try it and feed you back . thanks
Image Analyst
Image Analyst on 9 May 2014
Mick, not sure what your recent edit was, but if I helped you could you mark the answer as "Accepted"? Thanks.

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