
Re: dark halo around gaussian peak in Plot3D?
Posted:
Mar 9, 2013 5:26 AM


It probably has to do with numerical inaccuracies. The problem is removed by "Chop"ing the numerical output:
Plot3D[Chop@Evaluate@PDF[BinormalDistribution[0], {x, y}], {x, 40, 40}, {y, 40, 40}, PlotRange > All, PlotPoints > 50]
David
On Mar 8, 4:46 pm, "Michael B. Heaney" <mhea...@alum.mit.edu> wrote: > Here is simple example that demonstrates the problem: > > Plot3D[PDF[BinormalDistribution[0], {x, y}], {x, 40, 40}, {y, 40, 40}, > > PlotRange > All, PlotPoints > 200] > > Thanks, > > Michael > > > > > > > > > > On Thu, Mar 7, 2013 at 8:49 PM, Bob Hanlon <hanlonr...@gmail.com> wrote: > > I don't see a "dark halo" with the following > > > Plot3D[ > > PDF[BinormalDistribution[0], {x, y}], > > {x, 3, 3}, {y, 3, 3}] > > > Can you send a simple example that demonstrates the problem? > > > Bob Hanlon > > > On Thu, Mar 7, 2013 at 10:51 PM, Michael B. Heaney <mhea...@alum.mit.edu> > > wrote: > > > > Hi, > > > > When I plot a gaussian peak in Plot3D, there is a dark halo around the > > > peak. Why is this? How can I get rid of it? > > > > Thanks, > > > > Michael > > > >  > > >  > > > Michael B. Heaney > > > 3182 Stelling Drive > > > Palo Alto, CA 94303 USA > > > mhea...@alum.mit.edu > > >www.linkedin.com/in/michaelbheaney > > >  > >  >  > Michael B. Heaney > 3182 Stelling Drive > Palo Alto, CA 94303 USA > mhea...@alum.mit.eduwww.linkedin.com/in/michaelbheaney > 

