| """ |
| =================== |
| Annotate Text Arrow |
| =================== |
| |
| """ |
|
|
| import matplotlib.pyplot as plt |
| import numpy as np |
|
|
| |
| np.random.seed(19680801) |
|
|
| fig, ax = plt.subplots(figsize=(5, 5)) |
| ax.set_aspect(1) |
|
|
| x1 = -1 + np.random.randn(100) |
| y1 = -1 + np.random.randn(100) |
| x2 = 1. + np.random.randn(100) |
| y2 = 1. + np.random.randn(100) |
|
|
| ax.scatter(x1, y1, color="r") |
| ax.scatter(x2, y2, color="g") |
|
|
| bbox_props = dict(boxstyle="round", fc="w", ec="0.5", alpha=0.9) |
| ax.text(-2, -2, "Sample A", ha="center", va="center", size=20, |
| bbox=bbox_props) |
| ax.text(2, 2, "Sample B", ha="center", va="center", size=20, |
| bbox=bbox_props) |
|
|
|
|
| bbox_props = dict(boxstyle="rarrow", fc=(0.8, 0.9, 0.9), ec="b", lw=2) |
| t = ax.text(0, 0, "Direction", ha="center", va="center", rotation=45, |
| size=15, |
| bbox=bbox_props) |
|
|
| bb = t.get_bbox_patch() |
| bb.set_boxstyle("rarrow", pad=0.6) |
|
|
| ax.set_xlim(-4, 4) |
| ax.set_ylim(-4, 4) |
|
|
| plt.show() |
|
|
