[Date Index] [Thread Index] [Author Index]

Re: Count Function

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

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


> 
> From: Gregory Lypny <gregory.lypny at videotron.ca>
To: mathgroup at smc.vnet.net
> 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