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Polar to spherical coordinates [message #19807]

Mon, 24 April 2000 00:00

pford
Messages: 33
Registered: September 1996

Member

Greetings:

I have a problem that is screaming at me that there must be a simpler
solution in IDL than I have devised. I am attempting to relearn IDL,
after months of being away from it, and the math after decades from it and
I have not found a built-in procedure that does the trick.

The problem in its, simplest form, is that I want to take a 2-D polar
plot and transform it into a 3-D hemisphere and vice versa. More
accurately, a polar plot to a 3-D hemi-ellipsoid with varying axes and
thickness, i.e. more than just a surface plot. The manner that I am
thinking how to do this is to sample the polar plot along its radius and
map it to the hemisphere(with for loops). It seems to me that this is
likely common in IDL to map from polar to spherical coordinates and to
warp shapes. Since I don't wish to reinvent the wheel, and not a good
wheel at that, I would appreciate being pointed in the right direction.

Thank you,

Patrick Ford, MD
Baylor College of Medicine
pford@bcm.tmc.edu

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[Message index]

		Polar to spherical coordinates By: pford on Mon, 24 April 2000 00:00
		Re: Polar to spherical coordinates By: Patrick V. Ford on Thu, 27 April 2000 00:00

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