On Apr 16, 2009, at 3:50 PM, William Stein wrote: > 2009/4/16 Ondrej Certik <ond...@certik.cz>: >> >> Hi, >> >> the notebook (sagelite) can work with Graphics primitives in Sage, >> that's very nice. >> >> I would like to make sympy (and other packages) to be able to easily >> work with the plotting. One way to do plotting is to use matplotlib >> (or anything else) and drop a .png file, the notebook will show it. >> >> But I think a better way is to just return a Graphics object, as >> described at: >> >> http://sagemath.org/doc/reference/sage/plot/plot.html >> >> since the notebook can plot that one too. > > The notebook plots graphics objects by just making the show command > (on a graphics object) output a png. There is nothing at all special > about how the notebook plots Graphics 2d objects -- anything that > outputs a png gets "plotted" and that is it. It's an incredibly > simple "protocol", but means that you just immediately use it in your > code.
To clarify, the __repr__ method calls show() by default. >> That would work for 2D >> plots. For 3D plots, Sage seems to be using a little bit different >> architecture: >> >> sage: G = plot3d(lambda x, y: x^2 + y^2, (-2,2), (-2,2)) >> sage: type(G) >> <type 'sage.plot.plot3d.parametric_surface.ParametricSurface'> >> >> as described at: >> >> http://sagemath.org/doc/reference/plot3d.html > > For 3d plots it's really very similar, but of course they aren't > always png's. Calling show with viewer="tachyon" just renders a png, > and we're in the above case. Calling show with no options (no > viewer="tachyon") uses jmol, which means that a certain file type is > output. The notebook then notices that file was created and embeds a > java jmol applet configured using that file. It's .jmol (which is actually a .zip file). See http:// hg.sagemath.org/sage-main/file/5c72dbb92d82/sage/server/notebook/ cell.py#l1 - Robert --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
