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• To: mathgroup at smc.vnet.net
• Subject: [mg15430] Parts of a list
• From: "Hossein Kazemi" <kazemi at som.umass.edu>
• Date: Wed, 13 Jan 1999 20:57:41 -0500
• Organization: University of Massachusetts, Amherst
• Sender: owner-wri-mathgroup at wolfram.com

I have a list (matrix) that looks like this

x={{1,0},{2.5, .5},{3,0},{0,2}}

Now I want to eliminate those vectors that have zero for the second
case. That is, I want to get

{{2.5, .5},{0,2}}.

Is there a quick way of doing this?
I tried to apply Select to this but could not get it to work.

Thanks for your help.

Hossein Kazemi
UMass
kazemi at som.umass.edu

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  • Re: Parts of a list
    • From: jtischer@col2.telecom.com.co (Cl-Jurgen Tischer)