Re: Strange error when using InequalityPlot3D
- To: mathgroup at smc.vnet.net
- Subject: [mg60429] Re: [mg60401] Strange error when using InequalityPlot3D
- From: Andrzej Kozlowski <andrzej at yhc.att.ne.jp>
- Date: Fri, 16 Sep 2005 03:49:14 -0400 (EDT)
- References: <200509150916.FAA15850@smc.vnet.net>
- Reply-to: Andrzej Kozlowski <andrzej at akikoz.net>
- Sender: owner-wri-mathgroup at wolfram.com
InequalityPlot and InequalityPlot3D (which are functions defined in
the package <<Graphics`InequalityGraphics` and not a Mathematica
built-in functions) work only with polynomial and rational functions
since they depend on CylindricalDecomposition which only works for
polynomial inequalities.
You could try using ContourPlot3D from the <<Graphics`ContourPlot3D`
package.
Andrzej Kozlowski
On 15 Sep 2005, at 18:16, flatuniverse wrote:
> 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
>
>
- References:
- Strange error when using InequalityPlot3D
- From: "flatuniverse" <flatuniverse@gmail.com>
- Strange error when using InequalityPlot3D