Misleading EPR documentation

[SmolakK]

In the generate() method of the EPR class in the models.epr module the documentation states that od_matrix is computed on the fly, while this is not performed in the code. In order for the EPR to work correctly, od_matrix has to be provided.

Documentation snippet:

od_matrix : numpy array or None, optional
the origin destination matrix to use for deciding the movements of the agent (element [i,j] is the probability of one trip from location with tessellation index i to j, normalized by origin location) (element [i,j] is the probability of one trip from location with tessellation index i to j, normalized by origin location). If None, it is computed "on the fly" during the simulation. The default is None.

Recommended solutions: require od_matrix to be provided or call compute_od_matrix() function within the generate() method.