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

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

Hi Jody,
thank you very much for the answer, it helped a lot.
is it possible to dispklay both the circle and the plane?

On 20 April 2011 13:52, jody <jod...@gm...> wrote:

> Hi Amir
>
> Yes. For patametric curves you first have to type
>
>  set parametric
>
> next set your constants
>  R=5
>  d=4
>  e=6
>  c=15
>
> and then do the plotting (splot is for 3d plots)
>  splot [t=0:2*pi]  d+R*cos(t), e+R*sin(t),c
>
> Hope this helps
> Jody
>
> On Wed, Apr 20, 2011 at 12:28 PM, Amir Sabbagh <ami...@gm...> wrote:
> > 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
> >> >
> >> >
> >> > --
> >> > **************************************************************
> >> > Amir Sabbagh
> >> > Il mio sito / My site: http://almucantarat.altervista.org
> >> > **************************************************************
> >> >
> >> >
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> > --
> > **************************************************************
> > Amir Sabbagh
> > Il mio sito / My site: http://almucantarat.altervista.org
> > **************************************************************
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>



-- 
**************************************************************
Amir Sabbagh
Il mio sito / My site: http://almucantarat.altervista.org
**************************************************************