Possible bug in sim_cartesian_dmp.py example

[cmower]

hi @AlexanderFabisch I think there is a potential bug in the example

movement_primitives/examples/sim_cartesian_dmp.py

Lines 20 to 22 in 47bb036

	dmp = DMP(n_dims=7, execution_time=execution_time, dt=dt,
	n_weights_per_dim=10, int_dt=0.01, p_gain=2.5)

should this not be CartesianDMP?

[AlexanderFabisch]

Given that the documentation says "A normal DMP is used to represent a Cartesian trajectory given by positions and quaternions." I think that this was actually done on purpose to see how well it works. Of course, it is not the "correct" way to do it. I am open for suggestions to improve the example. Maybe a comparison between the two DMPs would be useful.