Re: [Gnuplot-info] plot 2D circle in 3D graph

[Amir S. <ami...@gm...>]

Thank you Jody for the tip. The problem with this option is that I get a
"undefined variable: t" error when I try to splot it.
Maybe there is a workaround for this?

Amir

On 20 April 2011 12:00, jody <jod...@gm...> wrote:

> Hi Amir
>
> You could try a parametric version of your circle:
>  x = d+R*cos(t)
>  y = e+R*sin(t)
>  z = k
>
> This gives you a horizontal circle centered at (d,e,k)
> For a tilted circle you would have to apply rotations
> around the x and/or y axis.
>
> Jody
>
>
> On Wed, Apr 20, 2011 at 11:36 AM, Amir Sabbagh <ami...@gm...> wrote:
> > Hi you all,
> >
> > I am trying to plot a circle and a plane with splot.
> >
> > I would like to have a circle at a Z=const value. I have tryed with
> ternary
> > operation with no success.
> >
> >   splot a*x+b*y+c title "Plane", \
> >   (x-d)**2 + (y-e)**2 - R**2==0? ((x-d)**2 + (y-e)**2 - R**2): 0/0 with
> > title "Circle"
> >
> > Can someone enlight me?
> >
> > Thank you
> > Amir
> >
> >
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> > Amir Sabbagh
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-- 
**************************************************************
Amir Sabbagh
Il mio sito / My site: http://almucantarat.altervista.org
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