注意
转到结尾 下载完整的示例代码。
标注的连接样式#
使用 annotate 创建标注时，可以通过 arrowprops 的 connectionstyle 参数控制箭头形状。有关更多详细信息，请参阅 FancyArrowPatch 的描述。
import matplotlib.pyplot as plt
def demo_con_style(ax, connectionstyle):
x1, y1 = 0.3, 0.2
x2, y2 = 0.8, 0.6
ax.plot([x1, x2], [y1, y2], ".")
ax.annotate("",
xy=(x1, y1), xycoords='data',
xytext=(x2, y2), textcoords='data',
arrowprops=dict(arrowstyle="->", color="0.5",
shrinkA=5, shrinkB=5,
patchA=None, patchB=None,
connectionstyle=connectionstyle,
),
)
ax.text(.05, .95, connectionstyle.replace(",", ",\n"),
transform=ax.transAxes, ha="left", va="top")
fig, axs = plt.subplots(3, 5, figsize=(7, 6.3), layout="constrained")
demo_con_style(axs[0, 0], "angle3,angleA=90,angleB=0")
demo_con_style(axs[1, 0], "angle3,angleA=0,angleB=90")
demo_con_style(axs[0, 1], "arc3,rad=0.")
demo_con_style(axs[1, 1], "arc3,rad=0.3")
demo_con_style(axs[2, 1], "arc3,rad=-0.3")
demo_con_style(axs[0, 2], "angle,angleA=-90,angleB=180,rad=0")
demo_con_style(axs[1, 2], "angle,angleA=-90,angleB=180,rad=5")
demo_con_style(axs[2, 2], "angle,angleA=-90,angleB=10,rad=5")
demo_con_style(axs[0, 3], "arc,angleA=-90,angleB=0,armA=30,armB=30,rad=0")
demo_con_style(axs[1, 3], "arc,angleA=-90,angleB=0,armA=30,armB=30,rad=5")
demo_con_style(axs[2, 3], "arc,angleA=-90,angleB=0,armA=0,armB=40,rad=0")
demo_con_style(axs[0, 4], "bar,fraction=0.3")
demo_con_style(axs[1, 4], "bar,fraction=-0.3")
demo_con_style(axs[2, 4], "bar,angle=180,fraction=-0.2")
for ax in axs.flat:
ax.set(xlim=(0, 1), ylim=(0, 1.25), xticks=[], yticks=[], aspect=1.25)
fig.get_layout_engine().set(wspace=0, hspace=0, w_pad=0, h_pad=0)
plt.show()
脚本的总运行时间：（0 分钟 1.172 秒）