Groups > comp.graphics.apps.gnuplot > #438

Re: Surface (2D) plot using decimal non-uniform data points

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From	sfeam <sfeam@users.sourceforge.net>
Newsgroups	comp.graphics.apps.gnuplot
Subject	Re: Surface (2D) plot using decimal non-uniform data points
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Date	Fri, 15 Jul 2011 12:15:20 -0700
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Sally wrote:

> Hi,
> 
> I have a three-column data file such as
> 
>     7.7920E+07   -3.4235E+08    1.3806E-03
>     7.6031E+07   -3.4249E+08    1.3606E-03
>     7.3991E+07   -3.4630E+08    1.1280E-03
>     7.8711E+07   -3.4892E+08    9.4483E-04
>     8.9620E+07   -3.4921E+08    7.2573E-04
>     6.7268E+07   -3.3500E+08    1.8679E-03
>     8.4936E+07   -3.4384E+08    1.1604E-03
>     8.1936E+07   -3.5992E+08    5.5310E-04
>     8.1639E+07   -3.6252E+08    6.0408E-04
>     7.2605E+07   -3.3525E+08    1.9559E-03
> 
> First and second columns are x and y coordinates respectively. And,
> the third column represents data value on the coordinate. I want to
> make a 2D surface plot such that a color-scaled third column data
> points are on x and y plane.
> 
> These are not regular grid data. Is there any simple way to visualize
> these data points?

I'm not entirely sure I understand the desired plot, but maybe

   plot 'data' using 1:2:3 with points pt 7 lc palette z

or else

   set dgrid3d
   splot 'data' using 1:2:3 with lines lc palette z

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Surface (2D) plot using decimal non-uniform data points Sally <adisn123@hotmail.com> - 2011-07-15 11:29 -0700
  Re: Surface (2D) plot using decimal non-uniform data points sfeam <sfeam@users.sourceforge.net> - 2011-07-15 12:15 -0700

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