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Re: How do I manipulate that data?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg22510] Re: [mg22403] How do I manipulate that data?
  • From: "Mark Harder" <harderm at ucs.orst.edu>
  • Date: Sat, 4 Mar 2000 02:27:11 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

mark,
    Have you tried something like

nDat= Length[data ];
ySq=Table[{data[[i,1]], data[[i,2]]^2 }, {i,nDat} ];
ListPlot[ySq, DisplayFunction->$DisplayFunction ]

?
-mark harder


-----Original Message-----
From: mark griggs <markgriggs at sc.rr.com>
To: mathgroup at smc.vnet.net
Subject: [mg22510] [mg22403] How do I manipulate that data?


>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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