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RE: List Question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg67958] RE: [mg67889] List Question
  • From: "David Park" <djmp at earthlink.net>
  • Date: Thu, 13 Jul 2006 06:56:05 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Simon,

Just map the pure function Take[#,2]& onto the data list.

data = {{x1, y1}, {x2, y2}, {x3, y3, z3}, {x4, y4}};

Take[#, 2] & /@ data
{{x1, y1}, {x2, y2}, {x3, y3}, {x4, y4}}

David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/ 


From: Simon Bale [mailto:simonjbale at gmail.com]
To: mathgroup at smc.vnet.net

Hi,

I have a list with the following structure:

{{x1,y1},{x2,y2},{x3,y3,z3},{x4,y4}...}

As you can see some of the data points have three elements. I would
like to remove these z elements so that the list has a structure
{{x1,y1},{x2,y2},{x3,y3},{x4,y4}...}. I'm not sure how to achieve this
so any
help is greatly appreciated.

Regards, Simon Bale.



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