Hi,
I am quite new to eigen3, so need some help in calculating polar decomposition with jacobi rotations using eigen3, please reply soon.

Thanks in advance.

It is implemented in Transform::rotation(), e.g.:

Code: Select all

Matrix3f mat = ...;
Affine3f t = mat;
Matrix3f rot = t.rotation();


Thanks for the reply but I am getting this error when I use your code:

conversion from 'Eigen::Matrix3d {aka Eigen::Matrix<double,3,3>}' to non-scaler type 'Eigen::Affine3d{aka Eigen::Transform<double, 3,2>}' requested

My problem is:

A = RS {I have the matrix A and I need matrix R and S, separately}

S = sqrt(A.transform() * A) { to calculate this I need to use Jacobi to get Diagonal Matrix}

So that R can be calculated as:

R = A * S.inverse()

I hope it is clear...

right, the ctor is explicit so:

Affine3f t;
t = mat;

Thank you so much it worked...