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

[Durand <du...@gm...>]

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".

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