Hello everyone,

I was wondering how the vector for the Result Vectors component are evaluated. I mean the directions of the principal forces come from the associated eigenvectors problem. But how is it possible to define where the arrows points at? As an example for the point P in the figure both vectors a and b satisfies the eigenvector problem.

So I was wondering if the arrows are defined somehow or they are just random since what matters is only the direction itself?

Thanks!