Re: [Gnuplot-bugs] sin(x^2-y^2)

[Marcus F. (Anunakin) <anu...@gm...>]

You need set ranges... for this plot

2009/2/13 Thomas Sefzick <t.s...@fz...>

>
> maybe set isosamples to higher values?
>
>
> Karim Rahim-2 wrote:
> >
> > First thanks for this excellent tool. I use it in class to show graphs
> > to students.
> >
> > When I do a contour plot of this, I see circles and I should see
> > hyperbolas.
> >
> > gnuplot> set contour
> > gnuplot> splot sin(x**2 - y**2)
> >
> >
> >        G N U P L O T
> >        Version 4.2 patchlevel 4
> >        last modified Sep 2008
> >        System: MS-Windows 32 bit
> >
> > Note I also tried this in Ubuntu Intrepid 64 bit and saw the same issue.
> >
> > sin(x^2 - y^2) = k for |k| leq 1
> >
> > x^2 - y^2 = arctan(k) --another constant
> >
> > The graphs is confusing so I can't say if it is wrong. When I tried
> > this function in maple I saw the hyperbolas as expected.
> >
> > Thanks,
> >
> > Karim
> >
> >
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Marcus Fazzi
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