Hi,
I'm converting a function which one of the argument is a vector that represent a symetric matrix.
For exemple for a 3*3 matrix the vector is (a11 a12 a13 a21 a22 a23 a31 a32 a33).
Is there a way to use directly or to convert to a matrice a vector like that with Eigen?
I know it's easy to convert it myself but i think it will require a lot of time...
Thanks

Nope, you need to write one for loop and map each row individually...