Re: pngcairo: suggestion for additional option

[Allin C. <cot...@wf...>]

On Wed, 21 Nov 2007, Ethan Merritt wrote:

> On Wednesday 21 November 2007 16:01, Allin Cottrell wrote:
> > 
> > > Version 4.2.2 has quite a lot of this already your finger tips, 
> > > by way of gnuplot-defined variables GPVAL_X_MIN etc.  Adding 
> > > GRAPH_XLEFT etc. shouldn't pose a major problem.
> > 
> > Sorry, I don't really understand.  There's no difficulty at all 
> > calculating/retrieving this information inside gnuplot.  The issue 
> > is how to make it available to the outside world -- that is, to 
> > another program that has called gnuplot to make a plot file, and 
> > wants to know some internal properties of the file.
> 
> I believe the suggestion was that one could achieve this by the
> following lines:
> 
>   set print "plot_coords.dat"
>   print "x limits: ", GPVAL_X_MIN, GPVAL_X_MAX
>   print "x2 limits: ", GPVAL_X2_MIN, GPVAL_X2_MAX
>   print "y limits: ", GPVAL_Y_MIN, GPVAL_Y_MAX
>   print "y2 limits: ", GPVAL_Y2_MIN, GPVAL_Y2_MAX
>   print "graph limits: ", GPVAL_GRAPH_XMIN, GPVAL_GRAPH_XMAX
>   ... and so on

where GPVAL_GRAPH_XMIN and friends are still to be added?

OK, this looks promising.  

Allin Cottrell