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Re: Colors for 3D Curves


You need to add the coloring function as a fourth component, as in the
following example:

ParametricPlot3D[{Cos[t],Sin[t],t/10,Hue[t/(8Pi)]},
{t,-4Pi,4Pi},PlotPoints->200]

To get a solid red helix, substitute RGBColor[1,0,0] for Hue[t/(8Pi)].

Coloring curves with ParametricPlot3D allows you to vary the color, but
using the PlotStyle option with 2-dimensional graphics functions, you
can only use solid colors.

Alfred Gray


%%%%%%%%%%%%%%%%%%%%%%%%%%
Visit the galleries of surfaces and curves: http://bianchi.umd.edu

Just published: Modern Differential Geometry of Curves and Surfaces,
Second Edition.  CRC Press, December 1997.

On Fri, 12 Jun 1998, Sofiane Ramdani wrote:

> Hi everybody,
> 
> I'm actually using "ParmetricPlot3D" to plot 3D curves. My problem is
> that I want to be able to choose the color of the curve plot. The
> "PlotStyle" option don't seem to work in "ParmetricPlot3D". Is there
> another way to define the plot color with "ParmetricPlot3D" ? Thanks
> for any help.
> (Hope you understand my english).
> 
> Sofiane Ramdani (ramdani at univ-tln.fr).
> 
> 
> 



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