| | """ |
| | =============== |
| | Patheffect Demo |
| | =============== |
| | |
| | """ |
| | import matplotlib.pyplot as plt |
| | import numpy as np |
| |
|
| | from matplotlib import patheffects |
| |
|
| | fig, (ax1, ax2, ax3) = plt.subplots(1, 3, figsize=(8, 3)) |
| | ax1.imshow([[1, 2], [2, 3]]) |
| | txt = ax1.annotate("test", (1., 1.), (0., 0), |
| | arrowprops=dict(arrowstyle="->", |
| | connectionstyle="angle3", lw=2), |
| | size=20, ha="center", |
| | path_effects=[patheffects.withStroke(linewidth=3, |
| | foreground="w")]) |
| | txt.arrow_patch.set_path_effects([ |
| | patheffects.Stroke(linewidth=5, foreground="w"), |
| | patheffects.Normal()]) |
| |
|
| | pe = [patheffects.withStroke(linewidth=3, |
| | foreground="w")] |
| | ax1.grid(True, linestyle="-", path_effects=pe) |
| |
|
| | arr = np.arange(25).reshape((5, 5)) |
| | ax2.imshow(arr) |
| | cntr = ax2.contour(arr, colors="k") |
| |
|
| | cntr.set(path_effects=[patheffects.withStroke(linewidth=3, foreground="w")]) |
| |
|
| | clbls = ax2.clabel(cntr, fmt="%2.0f", use_clabeltext=True) |
| | plt.setp(clbls, path_effects=[ |
| | patheffects.withStroke(linewidth=3, foreground="w")]) |
| |
|
| | |
| | p1, = ax3.plot([0, 1], [0, 1]) |
| | leg = ax3.legend([p1], ["Line 1"], fancybox=True, loc='upper left') |
| | leg.legendPatch.set_path_effects([patheffects.withSimplePatchShadow()]) |
| |
|
| | plt.show() |
| |
|
