quiverkey problem when angles=array #6972
Description
With matplotlib 1.5.1 and python 3.5.2, quiverkey plots every vector when angles=array instead of 'uv' or 'xy' in the quiver object used to create the key.
import matplotlib.pyplot as plt
import numpy as np
fig, ax = plt.subplots()
X, Y = np.meshgrid(np.arange(5), np.arange(7))
U = V = np.ones_like(X)
phi = (np.random.rand(5, 7) - .5) * 150
q = ax.quiver(X, Y, U, V*.5, angles=phi, color='r', alpha=1)
qk = ax.quiverkey(q, 0.5, 0.92, 2, r'$2 \frac{m}{s}$',
labelpos='W',
fontproperties={'weight': 'bold'})
plt.show()
