Legend does not show 'annotate' #8236
Description
When using annotate to draw an arrow, it does not show up in the legend.
Example code:
import matplotlib.pylab as plt
%matplotlib inline
fig, ax = plt.subplots(1)
ax.plot([0, 1], [0, 0], label='line1')
ax.plot([0, 1], [1, 1], label='line2')
ax.annotate("",
xy=(0.4,1.0),
xytext=(0.4,0.0),
arrowprops={'arrowstyle':'<->', 'color':'C7' },
label='distance')
ax.legend()gives:
I would expect an entry "distance" in the legend, with a grey double-sided arrow as symbol.
(I use Python 3.6.0 and Matplotlib 2.0.0 from Archlinux repository)