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MathGroup Archive 2006

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Re: draw vertical cylinder with no surface lines

  • To: mathgroup at smc.vnet.net
  • Subject: [mg71684] Re: draw vertical cylinder with no surface lines
  • From: "Narasimham" <mathma18 at hotmail.com>
  • Date: Sun, 26 Nov 2006 03:49:22 -0500 (EST)
  • References: <ek63g2$8tk$1@smc.vnet.net>

Murray Eisenberg wrote:
> For an illustration, I want to draw a closed cylindrical "can" -- a
> cylinder with its axis vertical -- along with arrows (with labels)
> indicating radius and height.
>
> The ways I've found, either using  Graphics`Shapes`Cylinder or
> ParametricPlot3D, insist on drawing curves on the vertical wall of the
> cylinder and, if I use ParametricPlot3D to draw the top, too, on the top.
>
> Is there some way to suppress these curves?  Of course I still need the
> circles bounding the top and bottom to be drawn as well as two vertical
> lines that demarcate the wall of the cylinder from the ambient space.  I
> just want to rely upon lighting and shading to suggest the
> three-dimensionality.
---
EdgeForm[] suppresses edges. Use larger number of points on the polar
rotation parameter. HTH

ParametricPlot3D[{Cos[u], Sin[u], z, EdgeForm[]}, {u, 0, 2Pi}, {z,
0, 2}, PlotPoints -> {200, 25}]


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