Re: Crinkled Hyperbola (ContourPlot in Manipulate)

*To*: mathgroup at smc.vnet.net*Subject*: [mg77874] Re: Crinkled Hyperbola (ContourPlot in Manipulate)*From*: Peter Breitfeld <phbrf at t-online.de>*Date*: Tue, 19 Jun 2007 06:28:55 -0400 (EDT)*References*: <f532pg$3d4$1@smc.vnet.net>

Bruce Colletti schrieb: > Re Mathematica 6.0 under WinXP. > > As the slider moves, a point glides along the hyperbola: > > Manipulate[ContourPlot[x^2-y^2==1,{x,-3,3},{y,-3,3},Epilog->{ > PointSize at 0.02,Point@{Cosh@h,Sinh@h}}], > {h,-1.5,1.5}] > > However, the moving point crinkles the plot, which restores itself when the mouse button is released. > > What causes the crinkling (this seems tied to ContourPlot, since no crinkling occurs when I use Plot[Sqrt[x^2-1],...])? > > Thankx. > > Bruce > If you increase the number of PlotPoints e.g. PlotPoints->50 there is no more crinkling. Gruss Peter -- ==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-==-== Peter Breitfeld, Bad Saulgau, Germany -- http://www.pBreitfeld.de