Usage of validateattributes with 'nonzero'

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Dirk Twisk
Dirk Twisk 2017-3-22
评论： Adam 2017-3-22
I am wondering whether this is a bug:
validateattributes([0 0 1],{'numeric'},{'nonzero'})
Should result in an error, but the test passes as long as at least one element of the vector is nonzero. The function documentation says otherwise.

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Adam
Adam 2017-3-22
Which version of Matlab are you using? In R2017b:
>> validateattributes( [0 0 1], { 'numeric' }, { 'nonzero' } )
Expected input to be nonzero.
so it looks to be working fine. Maybe it is a bug in an older version though. Strangely, in all my thousands of usages of validateattributes over the years I have never actually used 'nonzero' so hadn't even realised it existed as an attribute!
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Dirk Twisk
Dirk Twisk 2017-3-22
编辑：Dirk Twisk 2017-3-22
OK. My solution is to do this:
>> validateattributes(prod([0 0 1]),{'numeric'},{'nonzero'})
Expected input to be nonzero.

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