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Re: Count Function

  • To: mathgroup at
  • Subject: [mg65513] Re: Count Function
  • From: dh <dh at>
  • Date: Thu, 6 Apr 2006 06:51:53 -0400 (EDT)
  • References: <e1091t$ljd$>
  • Sender: owner-wri-mathgroup at

Hello Gregory,
use a pattern with a condition. E.g.:



Gregory Lypny wrote:
> 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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