Re: [Gnuplot-info] automatic detection of axis range during plotting

[Jon <dev...@gm...>]

Thanks, this really helps!



On Sat, Mar 22, 2014 at 5:31 AM, Thomas Sefzick <t.s...@fz...>wrote:

> BBands <bbands <at> gmail.com> writes:
>
> >
> > Ah, I take your point. For that I wrote a simple preprocessor that
> > notes the high and low values of the series
> > i wish to plot and creates the appropriate range, label and plot
> > commands. Someone posted a solution here using a dummy plot a while
> > back, but I never investigated it.
> >
> > Best,
> >
> >       John
> >
> > On Fri, Mar 21, 2014 at 3:02 PM, Jon <devout1977 <at> gmail.com> wrote:
> > > Thanks, it seems it does return some information concerning the range
> of the
> > > plot. But I wonder how I can possibly save them as parameters to be
> used for
> > > my purpose. It seems the plot will not know the range until it finishes
> > > plotting the data, but after the data is finished plotting the label,
> key
> > > etc have been put on the plot.
>
>
> there is a bunch of gnuplot-defined variables
> GPVAL_*
> which contain the state of the recent plot.
>
> a simple solution would be to make a dummy plot,
> save the plot ranges, define the labels and then
> do the real plot:
>
> set terminal push
> set teminal dumb
> plot "filename" ...
>
> set xrange [GPVAL_X_MIN:GPVAL_X_MAX]
> set yrange [GPVAL_Y_MIN:GPVAL_Y_MAX]
> set label 1 sprintf("xmin: %f",GPVAL_X_MIN) at ...
> set label 2 sprintf("xmax: %f",GPVAL_X_MAX) at ...
>
> set terminal pop
> replot
>
>
>
>
>
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