OGS
[tag] local_coordinate_system

A local coordinate system used for space-dependent tensor transformations.

It offers a simple way for input of anisotropic tensors w.r.t. a coordinate system.

The basis vectors form a transformation matrix $$R = (e_0, e_1, e_2)$$.

For a given anisotropic tensor $$A$$ parameter with the corresponding [tag] use_local_coordinate_system the tensor is rotated according to the formula: $$A' = R\cdot A\cdot R^T$$.