Re: Jagged Spine (MultinormalDistribution)
- To: mathgroup at smc.vnet.net
- Subject: [mg82962] Re: Jagged Spine (MultinormalDistribution)
- From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
- Date: Mon, 5 Nov 2007 04:59:29 -0500 (EST)
- Organization: The Open University, Milton Keynes, UK
- References: <fgk9or$pl6$1@smc.vnet.net>
Bruce Colletti wrote:
> Re 6.0.1 under WinXP.
>
> The spine of the bivariate normal distribution below is jagged, even when PlotPoints is set to 50 (took awhile to build). Altering MaxRecursions is likewise no help.
>
> Is there a way to get a quickly-plotted smooth spine without resorting to high values of PlotPoints? Thankx.
>
> Bruce
>
>
> Needs@"MultivariateStatistics`";
>
> Plot3D[PDF[MultinormalDistribution[{0, 0}, {{5, -3},{-3, 2}},{x, y}], {x, -4, 4}, {y, -4, 4}, PlotRange -> All,
---------------------------------------------------------------------^
Missing square bracket.
> PlotPoints -> 50]
Even after having fixed the syntax, the following returns an empty plot
(just the axes are drawn).
Needs["MultivariateStatistics`"];
Plot3D[PDF[MultinormalDistribution[{0, 0}, {{5, -3}, {-3, 2}},
{x, y}]], {x, -4, 4}, {y, -4, 4}, PlotRange -> All,
PlotPoints -> 50]
So, what did you do before that? Did your try the command above with a
fresh kernel?
Cheers,
--
Jean-Marc