Hi Patricia,
check sfepy.mechanics.tensors.transform_data(). You will need to prepare the transformation matrices for the spheroid yourself - take inspiration in prepare_cylindrical_transform() in the same module .
r.
----- Reply message ----- From: "Patricia Garcia Cañadilla" patricia.gar...@gmail.com To: sfepy...@googlegroups.com Subject: [sfepy-devel] Transform coordinates stress tensor Date: Wed, May 27, 2015 13:06 Hi all, I have a 3D ellipsoid and I will need to transform the stress tensor (9 components) from cartesian to cylindrical / prolate spheroid coordinates. Is there any function in Sfepy to do it? Thanks a lot!