Quadratic Form Contours
- To: mathgroup at smc.vnet.net
- Subject: [mg57652] Quadratic Form Contours
- From: Joerg Schaber <schaber at molgen.mpg.de>
- Date: Fri, 3 Jun 2005 05:33:36 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Hi,
does anybody know a simple way to calculate 2-D ellipsoids in x={x1,x2}
of a quadatric form solving xAx=b for a graphical output, i.e. contour
lines of the quadrtic form expressed as the Graphics primitive Ellipsoid?
I suppose that the option ParameterConfidenceRegion of NonlinearRegress
does something like that, but how?
best,
joerg