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MathGroup Archive 2004

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Re: ParametricPlot2D

  • To: mathgroup at smc.vnet.net
  • Subject: [mg46893] Re: ParametricPlot2D
  • From: sean_incali at yahoo.com (sean kim)
  • Date: Fri, 12 Mar 2004 23:40:18 -0500 (EST)
  • References: <c2hdui$agv$1@smc.vnet.net> <c2k4ct$qo0$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

is there a way to turn the mesh off in those plots?  so that on top
you see blue object, and below you see single outline trace of the
object? I tried Mesh-> flase at the end of that but it didn't work,
saying unknown option.

pp = ParametricPlot3D[{u - v^2, u v, 0}, {u, -1, 1}, {v, -1, 1},
         ViewPoint -> {0, 0, 4}, Mesh -> False]; 

or 

Show[Graphics[ pp[[1]] /. {x_?
    NumericQ, y_?NumericQ, _} :> {x, y} /. Polygon[pnts_] :>
               Line[Append[pnts, First[pnts]]]], , Mesh -> False] 





Jens-Peer Kuska <kuska at informatik.uni-leipzig.de> wrote in message news:<c2k4ct$qo0$1 at smc.vnet.net>...
> Hi,
> 
> 
> pp = ParametricPlot3D[{u - v^2, u v, 0}, {u, -1, 1}, {v, -1, 1}, 
>     ViewPoint -> {0, 0, 4}];
> 
> Show[Graphics[
>     pp[[1]] /. {x_?NumericQ, y_?NumericQ, _} :> {x, y} /. 
>       Polygon[pnts_] :> Line[Append[pnts, First[pnts]]]]]
> 
> Regards
>   Jens
> 
> "Narasimham G.L." wrote:
> > 
> > Is it possible to plot like :)  ParametricPlot2D {x,y}=f(u,v), where
> > u,v are two parameters? At present, I am plotting by setting z=0 in a
> > 3D plot e.g.,
> > ParametricPlot3D[{u-v^2,u v,0},{u,-1,1},{v,-1,1},ViewPoint->{0,0,4}] ;
> > But it adds colour to the domain that would have become a surface in
> > 3D had z been non-zero. Actually I like to see clean plots, no matter
> > if there are self-intersections.What is the simplest plot command
> > recommended in such cases?


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