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MathGroup Archive 2000

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Re: Newbie question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg25309] Re: Newbie question
  • From: dlkeith at my-deja.com
  • Date: Tue, 19 Sep 2000 03:45:36 -0400 (EDT)
  • References: <8q3dvc$kbb@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

In article <8q3dvc$kbb at smc.vnet.net>,
  Jose M Lasso <jml at accessinter.net> wrote:
> Hi Mathgroup,
>
> I have some numerical data: data:={{x,y},{x1,y1},{x2,y2}....{xn,yn}},
> I want to transform the data like this:
> data1:={{x,1/y},{x1,1/y1},{x2,1/y2}....{xn,1/yn}}, how can I do this
> transformation? Thanx in advance. Regards
>
> Jose M Lasso
>


data1={#[[1]], 1/#[[2]]} & /@ data
is one way.

Notice that {#[[1]],1/#[[2]]}& is the pure function form of

   invertPartTwo[lst_]:={lst[[1]],1/lst[[2]]}

which could also be written

   invertPartTwo[{p1_,p2_}]:={p1,1/p2}


Regards,

David




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