Missing NaN functions?

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Cameron
Cameron 2011-6-20
When I type >>help nansum in the command window, matlab returns "nansum not found." even though the function does exist in the documentation for the R2011a version. Is it possible that these functions (i.e. nansum, nanmean etc.) didn't install correctly, were they not included in R2011a, or do they exist under a new name? Thanks!
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Yella
Yella 2011-6-20
I use matlab 2010a... i have those functions.... FYKI

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采纳的回答

Walter Roberson
Walter Roberson 2011-6-20
nansum is part of the optional Stats toolbox, and also the optional Finance toolbox, but not part of basic MATLAB.
There is a MATLAB File Exchange contribution that implements at least some of these; please see the contribution http://www.mathworks.com/matlabcentral/fileexchange/6837-nan-suite/

更多回答（1 个）

Andrei Bobrov
Andrei Bobrov 2011-6-20
so nansum
Xnan20 = X;
Xnan20(isnan(X))=0;
out = sum(Xnan20);

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