Robert and Jason, 1. Thanks for the ideas and suggestions. I can probably do something useful with Robert's parametric plot suggestion for the moment.
2. Yes, Jason, Mathematica's RegionFunction is exactly what I had in mind and would be an extremely useful addition to plot3d(). But I know nothing about what input input to JMOL looks like, so I have no idea how hard it would be to implement. 3. At first blush, JavaView looks as impressive as JMOL, but appears to not have been upgraded since 2005. Rob On Mar 11, 2:55 am, [email protected] wrote: > [email protected] wrote: > > >> I'm not sure how hard it would be to add one; it would involve figuring > >> out how to clip triangles, separate a 3d plot into separate pieces, > >> etc., I think. > > >> Jason > > > Once I created this picture for absolute extremum: > >http://user.mendelu.cz/marik/3D/absolutni.html > > > I used the following steps: > > 1. draw in Maple the function like 2-x^2-y^2 over rectangle > > 2. draw in Maple cylindrical conus and a vertical lines (boundaries) > > 3. export into Javaview,http://www.javaview.de/ > > 4. use Javaview to cut the graph of the function by the vertical > > surfaces along boundaries and delete or hide unwanted parts > > > However, I am not able to find out if Javaview is clever enough to do > > the last step in batch mode and I do not know if this is the good way > > to follow. > > Well, you can define a cut plane in jmol, I think. However: > > 1. it doesn't look very sophisticated from the docs (you can basically > cut off a percentage of the scene). > > 2. it's probably better to do it in Sage before we get to the backends > so that it works reliably in all of the backends. > > Jason --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en -~----------~----~----~----~------~----~------~--~---
