Hello,
I have been following the thread dated Monday, October 9, 2006 when Kamila
Naxerova asked a question about plotting elliptical shapes. Can you explain the
equations for X and Y. I believe they used the parametric form of x and y (x=r
cos(theta), y=r sin(theta). I don't know what r is here ? Can you explain 1)the
origin of these equations and 2) what is r?
Sincerely,
Mary A. Marion
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