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Re: Shaded circles request. [message #7996 is a reply to message #7910]

Tue, 28 January 1997 00:00

Kevin Ivory
Messages: 71
Registered: January 1997

Member

David Fanning gave good tips for the original post from David
Kennedy and supplied source code to return circle coordinates.
The code uses a for loop to calculate the coordinates. It is
generally better to use IDL's implicit array handling.
An IDL function using my preferred method would look like:

function circle, xcenter, ycenter, radius
a = (2*!pi/99.)*findgen(100)
x = xcenter + radius * cos(a)
y = ycenter + radius * sin(a)
return, transpose([[x],[y]])
end

Best regards
Kevin
--
Kevin Ivory Tel: +49 5556 979 434
Max-Planck-Institut fuer Aeronomie Fax: +49 5556 979 240
Postfach 20 mailto:kivory2@gwdg.de
D-37189 Katlenburg-Lindau, GERMANY http://www.gwdg.de/~kivory2/

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		Shaded circles request. By: D.Kennedy on Mon, 27 January 1997 00:00
		Re: Shaded circles request. By: Kevin Ivory on Tue, 28 January 1997 00:00

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