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From: gl8f@astsun7.astro.Virginia.EDU (Greg Lindahl)
Newsgroups: comp.lang.idl-pvwave
Subject: contouring an (r,theta) grid
Message-ID: <1991Feb23.223057.12666@murdoch.acc.Virginia.EDU>
Date: 23 Feb 91 22:30:57 GMT
Sender: usenet@murdoch.acc.Virginia.EDU
Organization: Department of Astronomy, University of Virginia
Lines: 5

What's the easiest way to take a rectangular grid done in r,theta
coordinates and contour it in x,y? One way would be to interpolate the
data onto x,y; is there a library routine that does this easily?

I looked and didn't see one, but I'm new to IDL.