On Fri, Mar 19, 2010 at 7:03 PM, Ondrej Certik <[email protected]> wrote: > On Thu, Mar 18, 2010 at 5:10 PM, G B <[email protected]> wrote: >> Thanks. I tried that but it's causing different problems: >> ----------------------- >> from sympy import atan2 >> var('omega,t,x,y,r,Theta') >> Theta(t)=omega*t >> x(t)=r*cos(Theta(t)) >> y(t)=r*sin(Theta(t)) >> dx=diff(x,t) >> ddx=diff(dx,t) >> dy=diff(y,t) >> ddy=diff(dy,t) >> v_a(t)=atan2(dy(t),dx(t)) >> v_a >> -------------------------- >> >> I get: AttributeError: 'atan2' object has no attribute '_sage_' > > This is a bug in sympy, I've fixed that in sympy, currently the > patches are waiting for a review. When we update the sympy package in
Also a small fix to sage has to be done, I posted the patch here: http://trac.sagemath.org/sage_trac/ticket/8564 Greg, could you please review it? Thanks, Ondrej -- To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org To unsubscribe from this group, send email to sage-support+unsubscribegooglegroups.com or reply to this email with the words "REMOVE ME" as the subject.
