Re: set autoscale fix; set logscale y2

[Petr M. <mi...@ph...>]

> IMHO gnuplot reacts as it should:
> 
> > reset
> > set ytics nomirror
> > set logscale y
> > set yrange [1:100]
> > 
> > set y2tics nomirror
> > set logscale y2
> > set y2range [1:100]
> > 
> > plot 1+x*x
> 
> everything looks right, the y*ranges are defined,
> so it doesn't matter that the y2axis isn't used.
> 
> > pause -1
> >
> > set autoscale fix
> > replot
> 
> here, the defined y*ranges are forgotten, yrange is
> calculated from the function values and then - because
> y2tics is set - copied to the (not used!) y2axis,
> where, in order to prevent errors (logscale y2 !), the 1 to
> 100 yrange is converted into the 1e1 to 1e100 y2range.
> (if yrange would be [0:100] it wouldn't be possible to
> convert it into a log-range for y2axis, i think that's the
> idea behind this conversion)
> 
> keep in mind, that y2axis is plotted but not used.
> 
> using both yaxes
> 
> plot 1+x*x, 1+x*x axes x1y2
> 
> solves the problem.

Those y2 tics were explicitly set, so "plot ... axes x1y2" should not be 
required. I use this for x+x2 axes in order to have axes with wavelength and 
energy, for example.

The bug appears even if "set autoscale fix" appears *before* explicit 
y2range:


reset

set autoscale fix

set ytics nomirror
set logscale y
set yrange [1:100]

set y2tics nomirror
set logscale y2
set y2range [1:100]

plot 1+x*x

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