Generating a Random Potential

variational formulation
6

Hi @abelthayil,
I think there has been a change in the way of defining custom Expressions, the Parent class now is UserExpression (instead of Expression). So the RandomPotential would then be:

class RandomPotential(UserExpression):

    def __init__(self, **kwargs):
        random.seed(2 + MPI.rank(MPI.comm_world) )
        super().__init__(**kwargs)
    def eval(self, values, x):
        values[0] = random.randint(0,5)
    def value_shape(self):
        return ()

Sorry for pointing you to the outdated example!