avoid using deprecated block matrix call

parent 0b51b433
......@@ -119,9 +119,12 @@ if mpl_available:
phi = np.linspace(0, pi, 21)
xyz = np.c_[np.cos(phi), np.sin(phi), 0 * phi].T.reshape(-1, 1, 21)
unit_sphere = np.bmat([[xyz[0], xyz[2]], [xyz[1], xyz[0]],
[xyz[2], xyz[1]]])
unit_sphere = np.asarray(unit_sphere)
# TODO: use np.block once we depend on numpy >= 1.13.
unit_sphere = np.vstack([
np.hstack([xyz[0], xyz[2]]),
np.hstack([xyz[1], xyz[0]]),
np.hstack([xyz[2], xyz[1]]),
])
def projected_length(ax, length):
rc = np.array([ax.get_xlim3d(), ax.get_ylim3d(), ax.get_zlim3d()])
......
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