MathGroup Archive 2005

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Strange error when using InequalityPlot3D

  • To: mathgroup at
  • Subject: [mg60438] Re: Strange error when using InequalityPlot3D
  • From: "Jens-Peer Kuska" <kuska at>
  • Date: Fri, 16 Sep 2005 03:49:56 -0400 (EDT)
  • Organization: Uni Leipzig
  • References: <dgbeu3$fo7$>
  • Sender: owner-wri-mathgroup at


what may


do ??


"flatuniverse" <flatuniverse at> schrieb im 
Newsbeitrag news:dgbeu3$fo7$1 at
| 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

  • Prev by Date: Re: Replacement rule for a quotient
  • Next by Date: Re: basic issue with do and :=
  • Previous by thread: Re: Strange error when using InequalityPlot3D
  • Next by thread: Hamiltoncircuits on polyhedra