Ellipsoid in Mma
- To: mathgroup at smc.vnet.net
- Subject: [mg7470] Ellipsoid in Mma
- From: "John K.C. Lewis" <court at kelvin.physics.mun.ca>
- Date: Thu, 5 Jun 1997 01:35:56 -0400 (EDT)
- Organization: Memorial University of Newfoundland
- Sender: owner-wri-mathgroup at wolfram.com
In using the linear regression standard package, one finds that as an option, Regress will give the confidence ellipsoid for fitted parameters. However, "Ellipsoid" is not well documented; in fact, a two-dimensional confidence ellipse is mentioned but no more than that. "Ellipsoid" is apparently recognized as a graphics primitive by Graphics but not by Graphics 3D. What does one do with the information contained in "Ellipsoid"? There are several different methods to parametrize an ellipsoid, and I can't find any indication of which one is used. I have looked in the Mathematica 3.0 book, the online help for Mma 3.0, and in the "Guide to Standard Mathematica Packages Version 2.2". My thanks if you can assist; my apologies if I've overlooked something obvious. __________________________________________________________ John K.C. Lewis Department of Physics & Physical Oceanography Memorial University of Newfoundland St. John's, NF Canada A1B 3X7. FAX: (709) 737-8739 WWW: http://www.physics.mun.ca/~court