Usage of validateattributes with 'nonzero'

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.

Answer 1

[Adam]

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!

[Dirk Twisk]

Hi Adam, I checked this in 2013b and 2015b.

[Adam]

Hmm, I don't have R2015b or earlier installed any more, but it works in R2016a. Maybe it was fixed for that version.

[Dirk Twisk]

OK. My solution is to do this:

>> validateattributes(prod([0 0 1]),{'numeric'},{'nonzero'})
Expected input to be nonzero.

[Adam]

That should certainly work fine