Customizing arrow and bubble styles
The arrow between xytext
and the annotation point, as well as the bubble that covers the annotation text, are highly customizable. Below are a few parameter options as well as their resulting output.
fig, ax = plt.subplots(figsize=(8, 5))
t = np.arange(0.0, 5.0, 0.01)
s = np.cos(2*np.pi*t)
line, = ax.plot(t, s, lw=3)
ax.annotate(
'straight',
xy=(0, 1), xycoords='data',
xytext=(-50, 30), textcoords='offset points',
arrowprops=dict(arrowstyle="->"))
ax.annotate(
'arc3,\nrad 0.2',
xy=(0.5, -1), xycoords='data',
xytext=(-80, -60), textcoords='offset points',
arrowprops=dict(arrowstyle="->",
connectionstyle="arc3,rad=.2"))
ax.annotate(
'arc,\nangle 50',
xy=(1., 1), xycoords='data',
xytext=(-90, 50), textcoords='offset points',
arrowprops=dict(arrowstyle="->",
connectionstyle="arc,angleA=0,armA=50,rad=10"))
ax.annotate(
'arc,\narms',
xy=(1.5, -1), xycoords='data',
xytext=(-80, -60), textcoords='offset points',
arrowprops=dict(
arrowstyle="->",
connectionstyle="arc,angleA=0,armA=40,angleB=-90,armB=30,rad=7"))
ax.annotate(
'angle,\nangle 90',
xy=(2., 1), xycoords='data',
xytext=(-70, 30), textcoords='offset points',
arrowprops=dict(arrowstyle="->",
connectionstyle="angle,angleA=0,angleB=90,rad=10"))
ax.annotate(
'angle3,\nangle -90',
xy=(2.5, -1), xycoords='data',
xytext=(-80, -60), textcoords='offset points',
arrowprops=dict(arrowstyle="->",
connectionstyle="angle3,angleA=0,angleB=-90"))
ax.annotate(
'angle,\nround',
xy=(3., 1), xycoords='data',
xytext=(-60, 30), textcoords='offset points',
bbox=dict(boxstyle="round", fc="0.8"),
arrowprops=dict(arrowstyle="->",
connectionstyle="angle,angleA=0,angleB=90,rad=10"))
ax.annotate(
'angle,\nround4',
xy=(3.5, -1), xycoords='data',
xytext=(-70, -80), textcoords='offset points',
size=20,
bbox=dict(boxstyle="round4,pad=.5", fc="0.8"),
arrowprops=dict(arrowstyle="->",
connectionstyle="angle,angleA=0,angleB=-90,rad=10"))
ax.annotate(
'angle,\nshrink',
xy=(4., 1), xycoords='data',
xytext=(-60, 30), textcoords='offset points',
bbox=dict(boxstyle="round", fc="0.8"),
arrowprops=dict(arrowstyle="->",
shrinkA=0, shrinkB=10,
connectionstyle="angle,angleA=0,angleB=90,rad=10"))
## You can pass an empty string to get only annotation arrows rendered
ax.annotate('', xy=(4., 1.), xycoords='data',
xytext=(4.5, -1), textcoords='data',
arrowprops=dict(arrowstyle="<->",
connectionstyle="bar",
ec="k",
shrinkA=5, shrinkB=5))
ax.set(xlim=(-1, 5), ylim=(-4, 3))