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MathGroup Archive 2006

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Re: Count Function

  • To: mathgroup at
  • Subject: [mg65518] Re: [mg65501] Count Function
  • From: Bob Hanlon <hanlonr at>
  • Date: Thu, 6 Apr 2006 06:52:00 -0400 (EDT)
  • Reply-to: hanlonr at
  • Sender: owner-wri-mathgroup at

Count[X[[All,14]], _?(#>-9&)]

> From: Gregory Lypny <gregory.lypny at>
To: mathgroup at
> Subject: [mg65518] [mg65501] Count Function
> The syntax will be the death of me.
> Count[X[[All,14]], -9.] will tally how many elements in column 14 of  
> matrix X are equal to -9, but I can't for the life of me figure out  
> how to get how many are greater than -9.  Any hint would be most  
> appreciated.
> 	Greg

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