Hi Tom,
I have just managed to compile the java file you sent to me and it worked
fine. I was able to see the impressive Delaunay tesselation graph. I
compared the numerical results from VisAD with those from Matlab and they
are nearly identical which is really satisfactory. The number of NaN results
returned by VisAD and Matlab are not exactly the same (50 for Matlab and 65
for VisAD out of 168 points) , but once again, results from VisAD are still
satisfactory. As Bill mentioned it, this is probably due to the "ambiguity
of tetrahedralization".
Thank you very much to the VisAD team to solve this bug.
Regards,
Sebastien Lechelle
PS : I also wanted to mention that I am not the one who discovered this bug.
It is my Swiss colleague Andreas Sigg who found it.
----- Original Message -----
From: Tom Rink <rink@xxxxxxxxxxxxx>
To: <visad-list@xxxxxxxxxxxxx>
Sent: Monday, May 07, 2001 6:38 PM
Subject: Interpolation returning NaN...
> Hi Sebastien,
>
> I've implemented and tested a fix to the problem you discovered with
> your interpolation testing - sorry for the delay. Herein you'll find
> two attachments: Irregular3DSet.jar, dataFit.jar. Apply jar xvf to
> the first of these in your visad directory. Jar xvf the second in the
> top level of your classpath; note that this jar file contains my
> modifications of the source you were kind enough to provide. It will
> display the dataset, as well as, any NaN points which will be blue.
> You should see the blue (NaN interpolants) outside the hull of your
> dataset.
>
> Let me know if have any problems,
>
> TomR
