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From: Ethan A Merritt <EAMerritt@gmail.com>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: set link via in version 5.0 vs 5.2
Date: Thu, 05 Oct 2017 09:30:55 -0700
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Klaus Dahlke wrote:

> I use gnuplot mainly by calling it from a ruby on rails application,
> but the following behaviour difference is also observable just by
> using gnuplot from the command line:
> 
> I like to plot two datasets, one for axes x1 and y1 and the second one
> for x2 and y2. In Gnuplot 5.0 the following set of commends works
> fine:
> 
> set autoscale xfixmax
> set link x2 via x*0.319 inverse x/0.319
> 
> and plot has the expected outcome. The plot is then an rectangular
> where the x1 axes and x2 axes ends just at/on the y2 axis.

It is hard to say what the problem might be because you have 
not shown the plot command itself.  What are you plotting?
 
> After upgrade to version 5.2 plotting is aborted with 'x range is
> invalid'. When replacing 'set autoscale xfixmax' with e.g 'set xrange
> [0:7349]' the plot is produced fine, 'set xrange [0:*]' doesn't work.

It works fine here, but I am probably testing a different plot command.
Please show the entire series of commands that result in an
error message.

> In ruby it is easy to determine the maximum of the x-axes and then
> construct the respective command to be parsed to gnuplot.
> 
> Nevertheless, would be happyif the behaviour could be reverted back to
> use 'set autoscale xfixmax'.

There was no intentional change in the effect of command
"set autoscale xfixmax".     If there is a bug that caused an
unintentional change we can try to fix it, but you will have to
show an example of the bug so that it can be reproduced.

	Ethan


> Thankd and best regards,
> Klaus