Re: Count inside a matrix?
- To: mathgroup at smc.vnet.net
- Subject: [mg128015] Re: Count inside a matrix?
- From: Bob Hanlon <hanlonr357 at gmail.com>
- Date: Sun, 9 Sep 2012 05:08:46 -0400 (EDT)
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- References: <20120908070948.80D4C685C@smc.vnet.net>
matrix = Table[RandomInteger[{0, 10}], {5}, {3}]
{{3, 5, 7}, {5, 2, 9}, {7, 3, 7}, {6, 4, 1}, {2, 5, 8}}
Use levelspec argument to Count
Count[matrix, 5, 2]
3
Count[matrix, _?(# > 5 &), 2]
6
Or flatten matrix before using Count
Count[Flatten[matrix], 5]
3
Count[Flatten[matrix], _?(# > 5 &)]
6
Bob Hanlon
On Sat, Sep 8, 2012 at 3:09 AM, Sergio Sergio <zerge69 at gmail.com> 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
>
- References:
- Count inside a matrix?
- From: Sergio Sergio <zerge69@gmail.com>
- Count inside a matrix?