Hello, I have just started to use sympy.
I am trying to use euler rotation matrix R(a, b, g) to transform a tensor (say, T_p 3x3 matrix) from its principal frame of reference to lab frame of reference. http://en.wikipedia.org/wiki/Euler_angles basically doing, T_lf = R(a,b,g) * T_p * R(a,b,g).inv() I need to simplify the resultant matrix T_lf using trignometry relations and also evaluate the elements. When I just tried to do, T_lf.evalf(), it takes forever to carry out the operations. I have tried converting the T_lf into a list and used a for loop to carry out, trisimp(T_lf[i][j]).evalf() But still it is very slow. Kindly let me know the proper way to carry out the operations on individual matrix elements which needs to be simplified and evaluated. Thanks in advance Morovia. -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sy...@googlegroups.com. To unsubscribe from this group, send email to sympy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.