Re: how to orient Polar Plot 0 Degrees at the North Pole

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• Subject: [mg128820] Re: how to orient Polar Plot 0 Degrees at the North Pole
• From: "djmpark" <djmpark at comcast.net>
• Date: Thu, 29 Nov 2012 06:01:46 -0500 (EST)
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```And do you want positive angles on the right or on the left?

If on the right you have to reflect your data about 0 degrees and then
rotate it by 90 degrees.

Then the Presentations application has a DrawPolarGrid primitive that allows
quite a bit of adjustment in the labeling. The following is the form of just
such a Northward plot I recently helped a customer with.

<<Presentations`

Draw2D[
{DrawPolarGrid[
{ComplexPolar[0, 0 \[Degree]],
ComplexPolar[30., 180 \[Degree]],
ComplexPolar[5., 15 \[Degree]], {1, 1}},
PGMajorStyle -> Directive[GrayLevel[.7]],
PGRadiusNumberFunction -> (# - 30 &),
PGAngleNumberFunction -> (-# + 90 \[Degree] &),
PGLabelAxis -> 90 \[Degree]],
Red,
PolarDraw[f[\[Theta]], {\[Theta], \[Theta]min, \[Theta]max}],
Black,
Text[Style["dB", 12], {20, -3}]},
AspectRatio -> Automatic,
Frame -> None,
PlotRange -> {{-35, 40}, {0, 30}},
ImageSize -> 600] //
Framed[#, FrameStyle -> GrayLevel[0.7]] & //
Labeled[#,
Style["Making a Northward Facing Polar Plot",
14, FontFamily -> "Times"], {{Bottom, Left}}] &

David Park
djmpark at comcast.net
http://home.comcast.net/~djmpark/index.html

From: mathgroup [mailto:fizzymath at knology.net]

Sometimes I want the 0 Degree  direction of  PolarPlot to be at the North
Pole......I have been able to do this by applying  Rotate to the PolarPlot,
e.g....

Rotate[PolarPlot[expr...],Pi/2]

but this also Rotates the numbers for the Degrees, etc.  which I don't
want.....

is there another way ?....I looked at the Options to see if there was
one which allowed you to do this but, if there is such an Option, I
didn't see it....

Thanks.....Jerry Blimbaum

```

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