Closed
Description
annotation.set_position(...) is not working in versions 1.2.1, 1.3.0 nor on the master.
Here is an example that demonstrates this.
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation
# Create initial data
data = np.array([[1,2,3,4,5], [7,4,9,2,3]])
# Create figure and axes
fig = plt.figure()
ax = plt.axes(xlim=(0, 20), ylim=(0, 20))
# Create initial objects
line, = ax.plot([], [], 'r-')
annotation = ax.annotate('A0', xy=(data[0][0], data[1][0]))
annotation.set_animated(True)
def init():
return line, annotation
def update(num):
newData = np.array([[1 + num, 2 + num / 2, 3, 4 - num / 4, 5 + num],
[7, 4, 9 + num / 3, 2, 3]])
line.set_data(newData)
# This is not working but in docs it is described as a setter
# annotation.set_position((newData[0][0], newData[1][0]))
# This works but this is described in docs as getter
annotation.xytext = (newData[0][0], newData[1][0])
return line, annotation
anim = animation.FuncAnimation(fig, update, frames=25, init_func=init,
interval=200, blit=True)
plt.show()SO Question where the bug was discovered: Animate points with labels with mathplotlib