Re: [Gnuplot-info] Plotting a heatmap with floating point coordinates

[<v_...@uk...>]

  Hello!

On Tue, 5 Jul 2011 16:09:23 +0100
Durand <du...@gm...> wrote:

> Hi,
> 
> I'm wondering whether it is possible to use gnuplot to plot a heatmap
> from data generated by a simulation. This data uses a float for
> coordinates and gnuplot complains when I use "with image".
> 
  Why don't you use 'with pm3d"? I'm trying to plot something similar
at the moment and 'pm3d' suits my needs quite well. Almost perfect. 
  It even has a wonderful "interpolate" feature which helps to smooth
the rough tile-like plot.

  Regards,
    Vladimir

> The file looks like this:
> 
> 2 160 320
> >
> export
> >
> R Z TEMP
> >
> 1.562500E-02 -4.984375E+00 9.469442E+03
> >
> 4.687500E-02 -4.984375E+00 9.469432E+03
> >
> 7.812500E-02 -4.984375E+00 9.632299E+03
> >
> 1.093750E-01 -4.984375E+00 9.777784E+03
> >
> 1.406250E-01 -4.984375E+00 1.012443E+04
> >
> 1.718750E-01 -4.984375E+00 1.051870E+04
> >
> 2.031250E-01 -4.984375E+00 1.149681E+04
> 
> ...
> 
> 
> With the first two columns being coordinates and the last being the
> temperature at a point. I'm trying to get something like this:
> http://img828.imageshack.us/img828/14/screenshotad.png
> 
> The heatmaps on this page
> http://gnuplot.sourceforge.net/demo/heatmaps.htmlseem to be much lower
> resolution and I'm not really sure what to do so any
> help would be great!
> 
> Thanks
> Durand
> ------------------------------------------------------------------------------
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 <v_...@uk...>