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Re: Polar plots [message #6849 is a reply to message #6524]

Mon, 26 August 1996 00:00

David Theil
Messages: 11
Registered: May 1996

Junior Member

Jarrod Andrew Chapman wrote:
>
> Does anybody have code written to plot polar data (i.e. to fill sectors of radius
> r to r + dr and angle theta to theta + dtheta) using IDL? I can't seem to find
> anything like this built into the language. I've tried using the MAP_SET routines
> with some success, but it seems like there should be a better way to do this.
> Any suggestions?

try, for instance, something like this:

theta=findgen(51)*!pi/50
r=cos(theta)
dr=r/10
plot,r+dr,theta,/polar
oplot,r,theta,/polar
polyfill,[r*cos(theta),(r+dr)*cos(theta)],[r*sin(theta),(r+d r)*sin(theta)]

Of course, it would be nice if the polyfill procedure had the 'polar'
keyword.
(Hint, hint, RSI!)
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David Theil

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[Message index]

		Polar plots using MAP routines By: jchapman on Tue, 09 July 1996 00:00
		Re: Polar plots By: rsimpson on Wed, 28 August 1996 00:00
		Re: Polar plots By: David Theil on Mon, 26 August 1996 00:00

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