Maxima functions are OK but mpmath is not as slow as one can think sage: time list_plot([(x,mpmath.legenq(2,0,x)) for x in srange(-0.99,1.01,0.05)],plotjoined=True) +list_plot([(x,mpmath.legenp(2,0,x)) for x in srange(-0.99,1.01,0.1)],plotjoined=True) CPU times: user 0.20 s, sys: 0.00 s, total: 0.20 s Wall time: 0.20 s
On 12 Kwi, 21:52, ObsessiveMathsFreak <obsessivemathsfr...@gmail.com> wrote: > On Apr 12, 3:51 am, kcrisman <kcris...@gmail.com> wrote: > > > > > Or simply legendre_P, legendre_Q > > > > Unfortunately, these functions do not support non integer values of n, > > > i.e. they don't support generalised legendre functions, which is what > > > I need. > > > Are gen_legendre_P and gen_legendre_Q okay? These are all used from > > Maxima, as I recall. > > > - kcrisman > > They worked and were a _lot_ faster. Thanks! > > sage: time plot([lambda x: P(n,0,x), lambda x: Q(n,0,x)], > (x,-1,1),ymin=-2,ymax=2) > sage: time plot([gen_legendre_P(n,0,x), gen_legendre_Q(n,0,x)], > (x,-1,1),ymin=-2,ymax=2) > Time: CPU 3.79 s, Wall: 3.80 s > Time: CPU 0.32 s, Wall: 0.41 s -- 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 URL: http://www.sagemath.org
