Re: Polar Plot
- To: mathgroup at smc.vnet.net
- Subject: [mg82715] Re: Polar Plot
- From: Szabolcs Horvát <szhorvat at gmail.com>
- Date: Tue, 30 Oct 2007 03:15:48 -0500 (EST)
- References: <fg4dhs$6dc$1@smc.vnet.net>
Miguel wrote:
> How can I to plot a polar expresion in implicit form. For example,
> r^2==3+2*r*Cos[teta]
I believe that there is no built-in function for this, so either try to
write it in an explicit form and use PolarPlot[],
Solve[r^2 == 3 + 2*r*Cos[teta], r]
or write the expression in Cartesian coordinates and use ContourPlot[]
r^2 == 3 + 2*r*Cos[teta] //. {r -> Sqrt[x^2 + y^2], Cos[teta] -> x/r}
--
Szabolcs