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MathGroup Archive 2004

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Incidence/frequency of numbers in lists

  • To: mathgroup at smc.vnet.net
  • Subject: [mg47599] Incidence/frequency of numbers in lists
  • From: "Diana" <diana53xiii at earthlink.remove13.net>
  • Date: Sat, 17 Apr 2004 02:31:39 -0400 (EDT)
  • Reply-to: "Diana" <diana53xiii at earthlink.remove13.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi math folks,

I have a 24 - 455 table. I have named the table SortedEdgeSet.

The first few lines look like the following:

{{1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6},
{1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6},
{1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 6, 6, 6},
{1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6},
{1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 6, 6, 6},
{1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 6, 6, 6, 6},
{1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6, 6},...

The numbers 1 - 6 are listed 24 times in each of 455 sublists.

I would like to create a new table which does not contain the sublist
members which have two or fewer occurances of any of the six numbers in the
sublist. I only want sublists which have three or more of each of the
numbers.

So, for example, I would want to exclude the second sublist line:

{1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6},
because it only has two 6's in it.

I don't know what an occurance function might be in Mathematica. Can anyone
help?

Thanks,

Diana M.
-- 
=====================================================
"God made the integers, all else is the work of man."
L. Kronecker, Jahresber. DMV 2, S. 19.


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