*To*: mathgroup@smc.vnet.net*Subject*: [mg10405] Re: How to draw an ellipse?*From*: dreissNOSPAM@nospam.earthlink.net (David Reiss)*Date*: Mon, 12 Jan 1998 04:10:50 -0500*Organization*: EarthLink Network, Inc.*References*: <694b5p$kjs@smc.vnet.net>

In article <694b5p$kjs@smc.vnet.net>, saljxk@dix.agl.uh.edu (Krishnan Jayakrishnan) wrote: > Does any one know how to construct an ellipse? For example an ellipse > centered at (0,0) with intercepts at (-a,0,(a,0),(0,-b),(0,b) with > parametric equation > x(t) = a*cos(t) > y(t) = b*sin(t) > with t increasin from 0 to 2pi radians. -- > Sincerely > Krishnan Jayakrishnan > Systems Administrator > Allied Geophysical Labs > University of Houston Not quite sure what you mean by "construct;" but, if you want to plot (say for a=1 and b=1/3) you would use: a = 1; b = 1/3; ParametricPlot[{a Cos[t], b Sin[t]},{t, 0, 2 Pi}, AspectRatio -> Automatic] -- David Reiss dreissNOSPAM@nospam.earthlink.net http://home.earthlink.net/~dreiss To send personal email, remove the words "nospam" and "NOSPAM" from the email address