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Re: How do I manipulate that data?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg22449] Re: How do I manipulate that data?
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Sat, 4 Mar 2000 02:26:24 -0500 (EST)
  • Organization: Universitaet Leipzig
  • References: <89iaoe$msi@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

ListPlot[data /. {x_?NumericQ,y_?NumericQ} :> {x, y^2}]

will work.

Hope that helps
  Jens

PS: Who was Heisenburg ? Heisenberg ?

mark griggs wrote:
> 
> Hello all,
>   I have a data file called data.txt.  It consists of 2 columns of
> data.  I am able to read with
> data = ReadList["/home/mark/data.txt", {Real, Real}];   I let the first
> column represent x and the second represent y.  Then I plot y vs. x
> with   ListPlot[data].    My problem is that I need to plot y^2 vs. x.
> So, how can I square all the y terms?
> 
> regards
> 
> mark
> 
> --
> Heisenburg may have slept here
> ------------------------------


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