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Re: PolarPlot in dB

  • To: mathgroup at smc.vnet.net
  • Subject: [mg107527] Re: [mg107513] PolarPlot in dB
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Tue, 16 Feb 2010 03:51:33 -0500 (EST)
  • Reply-to: hanlonr at cox.net

PolarPlot[Max[0,
  10 Log10[1000*Sinc[3 t]^2]],
 {t, -Pi, Pi},
 PolarAxes -> True,
 PolarGridLines -> {
   Table[t, {t, 0, 2 Pi, Pi/12}],
   Table[r, {r, 6, 36, 3}]},
 PolarTicks -> {
   "Degrees",
   Table[r, {r, 6, 36, 6}]},
 TicksStyle -> Blue,
 PlotStyle -> {Red, Thick}]


Bob Hanlon

---- MDP <mparent at comcast.net> wrote: 

=============
Hi...  I'm trying to plot a radiation pattern using the PolarPlot
function, but need to use a dB scale for the magnitude.  I would also
like to have an angular lines and circles at defined increments.  I've
searched and couldn't find anything...

Anyone know of a way to do this?

Thanks
Marc



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