[sage-devel] Re: plot3d problem - stalled in maxima
David Joyner wrote: Since sage: x,y = var(x y) sage: plot3d(x^2-y^2, (x,-1,1),(y,-1,1)) works fine, why not just use variables sage: f = x^2-y^2 sage: f.variables() (x, y) to find the missing variables in plot3d(x^2-y^2, (-1,1),(-1,1)) and then replace the arguments (-1,1),(-1,1) by (x,-1,1),(y,-1,1) in plot3d.parametric_plot3d? Please use f.arguments() instead of f.variables(). The difference is illustrated below: sage: var(x,y) (x, y) sage: f(x,y) = x sage: f.variables() (x,) sage: f.arguments() (x, y) In this case, using variables won't work since only one thing is passed back, but using arguments does work, since the function was defined as taking two inputs. Jason --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-devel] Re: plot3d problem - stalled in maxima
Jason Grout wrote: David Joyner wrote: Since sage: x,y = var(x y) sage: plot3d(x^2-y^2, (x,-1,1),(y,-1,1)) works fine, why not just use variables sage: f = x^2-y^2 sage: f.variables() (x, y) to find the missing variables in plot3d(x^2-y^2, (-1,1),(-1,1)) and then replace the arguments (-1,1),(-1,1) by (x,-1,1),(y,-1,1) in plot3d.parametric_plot3d? Please use f.arguments() instead of f.variables(). The difference is illustrated below: sage: var(x,y) (x, y) sage: f(x,y) = x sage: f.variables() (x,) sage: f.arguments() (x, y) In this case, using variables won't work since only one thing is passed back, but using arguments does work, since the function was defined as taking two inputs. I should note that I'm not commenting on the original problem, just commenting on using .arguments() versus using .variables() Jason --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-devel] Re: plot3d problem - stalled in maxima
Since sage: x,y = var(x y) sage: plot3d(x^2-y^2, (x,-1,1),(y,-1,1)) works fine, why not just use variables sage: f = x^2-y^2 sage: f.variables() (x, y) to find the missing variables in plot3d(x^2-y^2, (-1,1),(-1,1)) and then replace the arguments (-1,1),(-1,1) by (x,-1,1),(y,-1,1) in plot3d.parametric_plot3d? Am I missing something? On Sun, Nov 30, 2008 at 11:35 AM, mikeslov [EMAIL PROTECTED] wrote: I saw similar tickets, now closed, but the problem remains in version 3.2: x,y=var(x y) plot3d(x^2-y^2, (-1,1),(-1,1)) There must be something wrong in the function sage.plot.plot3d.parametric_plot3d.adapt_to_callable My crude fix was: try: try: if len(f): s = sum(f) # get common universe except TypeError: s=f instead of original code at the beginning of mentioned function: try: s = sum(f) # get common universe ... I know, this is probably not the right fix, but maybe, it can drive someone with deeper knowledge of code in the right direction. Michal --~--~-~--~~~---~--~~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
