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Re: Count inside a matrix?

Use the 3rd argument of Count to specify the level down which to go in
the pattern matching.  E.g.:

In[1]:= mat = {
  {1, a, b, \[Pi]},
  {E, 2, 3, 1/3}

Out[1]= {{1, a, b, \[Pi]}, {E, 2, 3, 1/3}}

In[2]:= Count[mat, _Integer, 2]

Out[2]= 3

On Sep 8, 3:11 am, Sergio Sergio <zerg... at> wrote:
> Hi, does anybody know how to count elements within a matrix?
> I know how that Count works for lists, but it does not seem to work for a matrix.
> Any tips?
> Thanks

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