I'm trying to update the position of an annotation. If I add an annotation,
change it's position using set_position, I find the value of the position
(found using get_position) is updated, but the actual position on the
figure does not change. How can I actually change the position of the text
and starting point of the corresponding arrow?
Here's an example:
import matplotlib.pyplot as plt
data = [10, 8, 8, 5]
fig = plt.figure()
ax = fig.add_subplot(111)
ax.bar(range(len(data)),data)
ax.set_ylim(0,max(data)+2)
annotationPos1 = ax.annotate("Really long and large label",fontsize=12,
xy=(1.4,8),
xytext=(1.4,8.5),
arrowprops=dict(arrowstyle="->")
)
annotationPos2 = ax.annotate("Really long and large label",fontsize=12,
xy=(1.4,8),
xytext=(1.4,10.5),
arrowprops=dict(arrowstyle="->")
)
apos1before = annotationPos1.get_position()
annotationPos1.set_position((apos1before[0],apos1before[1]+2))
apos1after = annotationPos1.get_position()
apos2 = annotationPos2.get_position()
print apos1before,apos1after,apos2
plt.show()
Thanks, Yann
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