Alex, Any chance you could "commit" to implementing the other vector field plots during SD4 next week?
On 6/5/07, alex clemesha <[EMAIL PROTECTED]> wrote: > > > > > > > At the moment, plot_vector_field is only capable of plotting product > > vector fields, which is unacceptable for my use of it in an ODE > > class. Since it is a crucial issue for my use, I plan on trying to > > extend it to handle arbitrary 2d fields, unless Alex Clemesha feels > > like doing it for me. Any tips are appreciated. > > Hi Marshall, > > The motivation behind the function 'plot_vector_field' is it is one of > several from Mathematica's 'PlotField' plotting functions, see: > http://reference.wolfram.com/mathematica/Compatibility/tutorial/Graphics/PlotField.html > > If you go to the above link, I think you will find that the other couple > 'missing' functions (not in SAGE yet), are the others listed on the page. > > Actually, in SAGE, is the class 'GraphicPrimitive_PlotField', which is a > more general > class that was designed to enable the implementation all the functions of > Mathematica's 'PlotField' package ... and actually implementing the rest of > those functions might be 'easy'. (but if you want to do that and you want > them to look really nice, get ready to chase around pixels ;) > > What is really going on with the class 'GraphicPrimitive_PlotField' is it is > a wrapper > on top of matplotlib's (see google if you are not familiar) 'quiver' > function. > The quiver function is a pretty general function, and it holds all the > underlying parameters (arrows of constant length) that can be manipulated. > > Alex > > p.s. I'm glad you are interested in some of the more 'advanced'-ish plotting > functions > in SAGE, you can make some beautiful and illuminating images with them, > and they definitely couldn't hurt being improved. > > > > > > -- William Stein Associate Professor of Mathematics University of Washington http://www.williamstein.org --~--~---------~--~----~------------~-------~--~----~ 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://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
