Re: polarplot with arrow bearing tickmarks

*To*: mathgroup at smc.vnet.net*Subject*: [mg127205] Re: polarplot with arrow bearing tickmarks*From*: Murray Eisenberg <murray at math.umass.edu>*Date*: Sun, 8 Jul 2012 01:41:37 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*References*: <201207070928.FAA20581@smc.vnet.net>*Reply-to*: murray at math.umass.edu

Unclear what you want for the arrow, but why not use something like Epilog -> Arrow[{{0,0},{x,y}}] within the PolarPlot? You'll need to explain just what you want in order to specify the {x,y} of the head end. And since you use dynamic terminology "moves outward", presumably you'll want either a Manipulate where the angle is the control variable, or an equivalent DynamicModule version of that. On 7/7/12 5:28 AM, van zano wrote: > dear all, > I would like to decorate this polarplot with an arrow that starts at the origin and moves outwards at a certain angle (phi). it would be great if the arrow could also have tickmarks. > does anyone have a solution? > > PolarPlot[ > 1/(10*Sin[t]^4 + -1*Cos[t]^2*Sin[t]^2 + 0.1*Cos[t]^4 + > 5*Cos[t]^2*Sin[t]^2), {t, 0, 2*Pi}, > PlotRange -> All, > PlotStyle -> {{Red, AbsoluteThickness[4]}}] > > thanks! L > -- Murray Eisenberg murray at math.umass.edu Mathematics & Statistics Dept. Lederle Graduate Research Tower phone 413 549-1020 (H) University of Massachusetts 413 545-2859 (W) 710 North Pleasant Street fax 413 545-1801 Amherst, MA 01003-9305

**References**:**polarplot with arrow bearing tickmarks***From:*van zano <L.Balzano@gmail.com>