Hi Louis,

vdf_reduce.py has two issues:
Line 252: v_gse = resample(v_gse, vdf.time) should be v_gse = resample.resample(v_gse, vdf.time)
Line 266: v_xyz = sph2cart(np.deg2rad(phi_mat), np.deg2rad(theta_mat), v_mat) should be v_xyz = sph2cart.sph2cart(np.deg2rad(phi_mat), np.deg2rad(theta_mat), v_mat)

These changes allow the function to be used successfully.

Cheers,
Harry