On Jul 16, 2009, at 1:37 PM, kcrisman wrote: > On Jul 16, 3:54 pm, Ethan Van Andel <evlu...@gmail.com> wrote: >> Sorry to keep spamming sage-support. >> >> I have a class instance m with a method riemann_map so that >> m.riemann_map(z) returns a (numpy) complex value. I want to do a >> complex_plot of that function. If I try: >> complex_plot(m.riemann_map,(-2,2),(-2,2)) I get this error: >> ... >> File "fast_eval.pyx", line 1272, in >> sage.ext.fast_eval.fast_float_constant (sage/ext/fast_eval.c:7989) >> File "fast_eval.pyx", line 513, in >> sage.ext.fast_eval.FastDoubleFunc.__init__ (sage/ext/fast_eval.c: >> 3451) >> TypeError: a float is required >> >> In regular sage I just plot lambda x: m.riemann_map(x). However, I >> want to move that call to cython to reduce overhead, and it seems >> like >> lambda doesn't work in cython.
If you're calling complex_plot, you don't need to be worrying about the overhead... > According to > http://sage.math.washington.edu/home/mhansen/sage-epydoc/ > sage.misc.cython-module.html#cython_lambda > which is probably semi-official (I couldn't find it in reference > manual but it seems okay), there is a cython_lambda which should work > okay. Someone else will certainly be able to clarify more :) This seems a bit hackish for what you need, and I don't think it will even work in this case. Is there any reason you can't use an ordinary function instead of a lambda? The two best options I see are either writing that part in Python (quick and easy), or fixing complex_plot to take any callable (which it really should do). - Robert --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
