Re: Strange error when using InequalityPlot3D
- To: mathgroup at smc.vnet.net
- Subject: [mg60438] Re: Strange error when using InequalityPlot3D
- From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>
- Date: Fri, 16 Sep 2005 03:49:56 -0400 (EDT)
- Organization: Uni Leipzig
- References: <dgbeu3$fo7$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi, what may Needs["Graphics`ContourPlot3D`"] ContourPlot3D[chi2[z1,q0,q1,.6433]- 180,{z1,.1,.6},{q0,-3,1},{q1,-1,3}]; do ?? Regards Jens "flatuniverse" <flatuniverse at gmail.com> schrieb im Newsbeitrag news:dgbeu3$fo7$1 at smc.vnet.net... | Hi All. I'm trying to visualize chi-squared contours for a 3 parameter | fit. I can take 2D slices of the contours using ContourPlot, but I'd | like to see the function in 3D. So I have a function chi2[], and to | see the chi^2=180 contour, I use the following: | | InequalityPlot3D[chi2[z1,q0,q1,.6433]= | 180,{z1,.1,.6},{q0,-3,1},{q1,-1,3}]; | | which produces the error, | | InequalityPlot3D::region: The region defined by <<1>> could not be | broken down into cylinders. | | What's going on here? Is there a better way to see this function in | 3D? | | Thanks |