Re: [Help-gsl] histogram2d

[Daniel J Farrell]

Hello,

I use gnuplot to take a surface plot of gsl histogram2d's. I take the  
average of the x and y bin position and reduced the histogram data to  
(x,y,z) points.

Example,
(http://www.boyfarrell.com/forums/gsl-histogram-2d-plot.pdf) using the  
data file, (http://www.boyfarrell.com/forums/histogram2d.txt).

The gnuplot command was,

splot 'histogram2d.txt' using (($1+$2)/2.0):(($3+$4)/2.0):5 with lines


If you want to get the 'density' you could try putting isobars on...  
type

set contour
replot

gnuplot can now do histogram but I haven't used this feature. It might  
just plot normal 1D histogram...

Cheers,

Dan.

On 7 Mar 2008, at 13:06, Jerome BENOIT wrote:

> Hello List,
>
> I am looking for a way to plot an histogram2d as given by GSL:
> something as a density plot.
>
> Thanks in advance,
> Jerome
>
> --
> Jerome BENOIT
> jgmbenoit_at_mailsnare_dot_net
>
>
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