animation of the PDE

*To*: mathgroup at smc.vnet.net*Subject*: [mg132312] animation of the PDE*From*: Любовь Тупикина <lyubov78 at gmail.com>*Date*: Sat, 8 Feb 2014 04:01:29 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-outx@smc.vnet.net*Delivered-to*: mathgroup-newsendx@smc.vnet.net

Hola! I was using Mathematica to visualise trajectories of x[p],y[p] depending on p. Is it possible? Talking about "it's simple to animate the parametric plot of them by using ParametricPlot inside Animate." But I cannot animate the NDSolve using ParametricPlot. Can you please tell me why I get errors like "NDSolve::dsvar: 1.0011952113073699` cannot be used as a variable. ": Animate[ ParametricPlot[ {Evaluate[{y[p], x[p]} /. sol = NDSolve[...some equation type D[f1[x[p],y[p],p] = -D[x[p], p], f2[x[p],y[p],p] = -D[y[p], p] x[1] == -1, y[1] == -1}, {y[p], x[p]}, {p, 1, Tp}]]}, {p, 1, Tp}], {Tp, 1, 100}] Thank you!