Re: [Gnuplot-info] plotting data + functions on the same graph

[Thomas S. <t.s...@fz...>]

make a dummy plot to determine the xrange, then do the
real plot:

set term push
set term dumb
set xrange [] writeback
plot "file.asc" with line notitle axis x1y1, \
1 notitle with line
set xrange restore
set term pop
replot


yoel wrote:
> 
> Hi all,
> I'm trying to plot an x(y) curve (data given in two columns of a file) and
> on top to plot a constant line:
> y=1
> Right now it looks like that:
> set format y "%e"
> set autoscale x
> set yrange [-0.863098:2.43739]
> plot "file.asc" with line notitle axis x1y1, \
> 1 notitle with line
> 
> File.asc has data in the range -1.5<x<7
> Since -1.5 isn't a whole value, the left x end it -2.
> My problem is that the line y=1 is plotted only until x=-1.5 and not until
> the end of the plot area (x=-2).
> Does anyone know how I can make gnuplot plot the straight line until the
> end of the plotting area?
> I could set the xrange to [-2:7] but I want to do it automatically on many
> files and the range is a bit different each time.
> Looking for something more generic...
> 
> Thanks a lot!
> Yoel
> 

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