简单Coord02注释示例

import matplotlib.pyplot as pltfig, ax = plt.subplots(figsize=(3, 2))an1 = ax.annotate("Test 1", xy=(0.5, 0.5), xycoords="data",va="center", ha="center",bbox=dict(boxstyle="round", fc="w"))an2 = ax.annotate("Test 2", xy=(0.5, 1.), xycoords=an1,xytext=(0.5, 1.1), textcoords=(an1, "axes fraction"),va="bottom", ha="center",bbox=dict(boxstyle="round", fc="w"),arrowprops=dict(arrowstyle="->"))fig.subplots_adjust(top=0.83)plt.show()
