Help with ParametricPlot3D in color

*To*: mathgroup at smc.vnet.net*Subject*: [mg4416] Help with ParametricPlot3D in color*From*: ivan at nauplius.rsmas.miami.edu (Ivan Lima)*Date*: Sun, 21 Jul 1996 23:09:17 -0400*Organization*: RSMAS/University of Miami*Sender*: owner-wri-mathgroup at wolfram.com

I'm trying to plot some phase portraits of a three-dimensional system with ParametricPlot3D and I'd like it to plot the lines in color. After two days looking at the manuals I can't find any way to do that. Does anybody know how to do that? Sorry for posting such a stupid question. I'm kind of new to Mathematica graphics and any help will be appreciated Bellow are the commands I'm using. In[1]:= NDSolve[{x'[t] == r x[t] - c x[t]^2 - g (x[t]/(x[t]+h)) y[t], y'[t] == g (x[t]/(x[t]+h)) y[t] e - m y[t] - p (y[t]/(y[t]+i)) z[t], z'[t] == p (y[t]/(y[t]+i)) z[t] e - n z[t], x[0] == 0.1, y[0] == 0.1, z[0] == 0.1}, {x, y, z}, {t, 0, 20000}, MaxSteps->250000] Out[1]= {{x -> InterpolatingFunction[{0., 20000.}, <>], > y -> InterpolatingFunction[{0., 20000.}, <>], > z -> InterpolatingFunction[{0., 20000.}, <>]}} In[2]:= ParametricPlot3D[Evaluate[{x[t],y[t],z[t]} /. %], {t, 100, 20000}, PlotPoints -> 20000, PlotRange -> {{0, 6}, {0, 2}, {0, 1}}, ColorOutput -> RGBColor, ViewPoint -> {1.3, 2.4, 2.}] Out[2]= -Graphics3D- Thanks Ivan -- /| Ivan Lima | O __/ |_ Rosenstiel School of Marine and Atmospheric Science | o /o \_/| Division of Marine Biology and Fisheries | ( < _ | ivan at nauplius.rsmas.miami.edu | \__ _/ \| http://nauplius.rsmas.miami.edu/homepage/home.html | \_| ==== [MESSAGE SEPARATOR] ====