The 2d field data(eigenvector) without orientation information in Paraview

Hi~

Recently, I found that the eigenvector saved in

FreeFem/share/FreeFEM/4.9/examples/eigen/BeamEigenValue.edp

When I save the data to the *.vtu, and there is without orientation information in ParaView.

And the code is here.

2d-beam-eigen.edp (3.0 KB)