# Mean of an Array Containing some NAN Elements

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Fabio Taccaliti el 7 de Jul. de 2022
Respondida: Vijeta Singh Yadav el 7 de Jul. de 2022
Hello, I have two different arrays, A2 (96x96 doubles) and A3 (96x96x96 doubles), in both these arrays some elements inside are NAN.
I would like to compute the mean (single value for each array) of all the non-NAN values, how can I do it?
I tried with mean(A2) and mean(A3) but is not working
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KSSV el 7 de Jul. de 2022
Editada: KSSV el 7 de Jul. de 2022
Read the doc of mean, there is option of omitting nan.
A = [1 2 NaN 3 4 NaN] ;
mean(A,'omitnan')
ans = 2.5000
In older versions it is nanmean.
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Fabio Taccaliti el 7 de Jul. de 2022
Thanks, how can I do the mean of all the components, because right now is giving me a 1x96 array
KSSV el 7 de Jul. de 2022
Again read the doc, you cn specify the dimension to calculate the mean.

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### Más respuestas (1)

Vijeta Singh Yadav el 7 de Jul. de 2022
M = mean(___,nanflag)
This function will define whether to exclude or include NaN values from the computation of any previous syntaxes.
It has the following 2 types:
• Mean(X,’omitNaN’): It will omit all NaN values from the calculation
• Mean(X,’includeNaN’): It will add all the NaN values in the calculation.
Refer to Matlab Documentation for more information.
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