精确文本布局

你可以在数据或轴 (0, 1) 坐标中精确布局文本。此示例显示了文本布局的一些对齐和旋转规范。

精确文本布局示例

  1. import matplotlib.pyplot as plt
  3. # Build a rectangle in axes coords
  4. left, width = .25, .5
  5. bottom, height = .25, .5
  6. right = left + width
  7. top = bottom + height
  8. ax = plt.gca()
  9. p = plt.Rectangle((left, bottom), width, height, fill=False)
  10. p.set_transform(ax.transAxes)
  11. p.set_clip_on(False)
  12. ax.add_patch(p)
  15. ax.text(left, bottom, 'left top',
  16.         horizontalalignment='left',
  17.         verticalalignment='top',
  18.         transform=ax.transAxes)
  20. ax.text(left, bottom, 'left bottom',
  21.         horizontalalignment='left',
  22.         verticalalignment='bottom',
  23.         transform=ax.transAxes)
  25. ax.text(right, top, 'right bottom',
  26.         horizontalalignment='right',
  27.         verticalalignment='bottom',
  28.         transform=ax.transAxes)
  30. ax.text(right, top, 'right top',
  31.         horizontalalignment='right',
  32.         verticalalignment='top',
  33.         transform=ax.transAxes)
  35. ax.text(right, bottom, 'center top',
  36.         horizontalalignment='center',
  37.         verticalalignment='top',
  38.         transform=ax.transAxes)
  40. ax.text(left, 0.5 * (bottom + top), 'right center',
  41.         horizontalalignment='right',
  42.         verticalalignment='center',
  43.         rotation='vertical',
  44.         transform=ax.transAxes)
  46. ax.text(left, 0.5 * (bottom + top), 'left center',
  47.         horizontalalignment='left',
  48.         verticalalignment='center',
  49.         rotation='vertical',
  50.         transform=ax.transAxes)
  52. ax.text(0.5 * (left + right), 0.5 * (bottom + top), 'middle',
  53.         horizontalalignment='center',
  54.         verticalalignment='center',
  55.         transform=ax.transAxes)
  57. ax.text(right, 0.5 * (bottom + top), 'centered',
  58.         horizontalalignment='center',
  59.         verticalalignment='center',
  60.         rotation='vertical',
  61.         transform=ax.transAxes)
  63. ax.text(left, top, 'rotated\nwith newlines',
  64.         horizontalalignment='center',
  65.         verticalalignment='center',
  66.         rotation=45,
  67.         transform=ax.transAxes)
  69. plt.axis('off')
  71. plt.show()

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