what is the differences between "sum(x, 3, 'omitnan')" and "nansum(x, 3)" ?

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BN
BN 2019-10-28
编辑： Matt J 2019-10-28
Hi
could you please let me know what is the differences between "sum(x, 3, 'omitnan')" and "nansum(x, 3)" ?

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Walter Roberson
Walter Roberson 2019-10-28
nansum() is an older routine that is part of the Statistics Toolbox.
sum() with 'omitnan' is part of a series of general enhancements to handling nan. It requires a newer MATLAB release but no special toolbox.
There might possibly be some differences in details of handling of some datatypes.

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Matt J
Matt J 2019-10-28
编辑：Matt J 2019-10-28
Nothing. In earlier versions of Matlab, the 'omitnan' flag wasn't available to the sum command, so you had to either use nansum if you had the Statistics Toolbox or code your own if you didn't.

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