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MathGroup Archive 2006

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Re: Count Function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg65515] Re: [mg65501] Count Function
  • From: "Erickson Paul-CPTP18" <Paul.Erickson at Motorola.com>
  • Date: Thu, 6 Apr 2006 06:51:56 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com
  • Thread-index: AcZYq1W1GhoQWiDGTTOzbRbc1OS13gAGX2Ow

 Length[ Select[x[[All, 14]], # > -9 & ]

Select uses criteria while Count uses pattern.

-----Original Message-----
From: Gregory Lypny [mailto:gregory.lypny at videotron.ca] 
To: mathgroup at smc.vnet.net
Subject: [mg65515] [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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