On Tue, Mar 10, 2009 at 11:20 AM, Rob Beezer <[email protected]> wrote: > > Will that allow one to *explicitly* restrict a domain to a subset of > what is the biggest possible? > > In other words, could I plot x^2+y^2 *only* above the circle (x-2)^2 + > (y-3)^2=4?
For the current implicit_plot3d, if you mean above the interior of the circle, then this would partly work. The plotting draws quadrilaterals in a grid, and you can tell it to discard any quadrilateral that has a vertex outside the circle. So you could get your plot, but it would have a jagged outline, unless you used a very large plot_points setting (which would make it very slow). (This isn't technically accurate, but it's close enough to understand the issues here.) If you mean above the boundary of the circle, then no -- there would be no quadrilaterals with all four vertices directly above the boundary of the circle, so all quadrilaterals would be discarded. Of course, implicit_plot3d is a bad way to plot this function, because it will be far slower than plot3d. Carl --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
