Re: List Question
- To: mathgroup at smc.vnet.net
- Subject: [mg67932] Re: List Question
- From: bghiggins at ucdavis.edu
- Date: Thu, 13 Jul 2006 06:53:42 -0400 (EDT)
- References: <e92e03$ljm$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Simon,
Use a rule
lst = {{x1,
y1}, {x2, y2}, {x3, y3, z3}, {x4, y4}, {x5, y5, z5}, {x6, y6, z6},
{x7, y7}}
lst/.{a_,b_,_}->{a,b}
{{x1,y1},{x2,y2},{x3,y3},{x4,y4},{x5,y5},{x6,y6},{x7,yz}}
Cheers,
Brian
Simon Bale wrote:
> 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.