[Octave-bug-tracker] [bug #42422] ismatrix: Matlab is only true for 2 dimensions

[Rik]

Follow-up Comment #8, bug #42422 (project octave):

Results from ismatrix testing:


For MATLAB R2013b the result is:

>> ismatrix ({1,2;3,4})
ans =
     1

>> [x(1:2,1:2).a] = deal (1,1,1,1);
>> ismatrix (x)
ans =
     1

>> ismatrix ([])
ans =
     1

>> ismatrix (zeros (10, 0))
ans =
     1

>> ismatrix (zeros (0,10))
ans =
     1

>> x = zeros (0,10,0,0,0)
x =
   Empty array: 0-by-10-by-0-by-0-by-0

>> size (x)
ans =
     0    10     0     0     0

>> ndims (x)
ans =
     5

>> ismatrix (x)
ans =
     0

>> x = zeros (0,10,0,1,0)
x =
   Empty array: 0-by-10-by-0-by-1-by-0

>> ismatrix (x)
ans =
     0

>> isscalar ({1})
ans =
     1

>> isvector ([])
ans =
     0

>> isvector (1)
ans =
     1

>> isvector (zeros (1,0))
ans =
     1

>> isvector (cell (1,3))
ans =
     1



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