艺术家对象测试

每个Matplotlib原始艺术家类型的测试单元支持。

轴处理单位转换，艺术家保留指向其父轴的指针。如果要将它们与单位数据一起使用，则必须使用轴实例初始化艺术家，否则他们将不知道如何将单位转换为标量。

此示例需要 basic_units.py

艺术家对象测试示例

  1. import random
  2. import matplotlib.lines as lines
  3. import matplotlib.patches as patches
  4. import matplotlib.text as text
  5. import matplotlib.collections as collections
  7. from basic_units import cm, inch
  8. import numpy as np
  9. import matplotlib.pyplot as plt
  11. fig, ax = plt.subplots()
  12. ax.xaxis.set_units(cm)
  13. ax.yaxis.set_units(cm)
  15. # Fixing random state for reproducibility
  16. np.random.seed(19680801)
  18. if 0:
  19.     # test a line collection
  20.     # Not supported at present.
  21.     verts = []
  22.     for i in range(10):
  23.         # a random line segment in inches
  24.         verts.append(zip(*inch*10*np.random.rand(2, random.randint(2, 15))))
  25.     lc = collections.LineCollection(verts, axes=ax)
  26.     ax.add_collection(lc)
  28. # test a plain-ol-line
  29. line = lines.Line2D([0*cm, 1.5*cm], [0*cm, 2.5*cm],
  30.                     lw=2, color='black', axes=ax)
  31. ax.add_line(line)
  33. if 0:
  34.     # test a patch
  35.     # Not supported at present.
  36.     rect = patches.Rectangle((1*cm, 1*cm), width=5*cm, height=2*cm,
  37.                              alpha=0.2, axes=ax)
  38.     ax.add_patch(rect)
  41. t = text.Text(3*cm, 2.5*cm, 'text label', ha='left', va='bottom', axes=ax)
  42. ax.add_artist(t)
  44. ax.set_xlim(-1*cm, 10*cm)
  45. ax.set_ylim(-1*cm, 10*cm)
  46. # ax.xaxis.set_units(inch)
  47. ax.grid(True)
  48. ax.set_title("Artists with units")
  49. plt.show()

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