Spine的放置演示

调整轴Spine的位置和外观。

  1. import numpy as np
  2. import matplotlib.pyplot as plt
  1. fig = plt.figure()
  2. x = np.linspace(-np.pi, np.pi, 100)
  3. y = 2 * np.sin(x)
  5. ax = fig.add_subplot(2, 2, 1)
  6. ax.set_title('centered spines')
  7. ax.plot(x, y)
  8. ax.spines['left'].set_position('center')
  9. ax.spines['right'].set_color('none')
  10. ax.spines['bottom'].set_position('center')
  11. ax.spines['top'].set_color('none')
  12. ax.spines['left'].set_smart_bounds(True)
  13. ax.spines['bottom'].set_smart_bounds(True)
  14. ax.xaxis.set_ticks_position('bottom')
  15. ax.yaxis.set_ticks_position('left')
  17. ax = fig.add_subplot(2, 2, 2)
  18. ax.set_title('zeroed spines')
  19. ax.plot(x, y)
  20. ax.spines['left'].set_position('zero')
  21. ax.spines['right'].set_color('none')
  22. ax.spines['bottom'].set_position('zero')
  23. ax.spines['top'].set_color('none')
  24. ax.spines['left'].set_smart_bounds(True)
  25. ax.spines['bottom'].set_smart_bounds(True)
  26. ax.xaxis.set_ticks_position('bottom')
  27. ax.yaxis.set_ticks_position('left')
  29. ax = fig.add_subplot(2, 2, 3)
  30. ax.set_title('spines at axes (0.6, 0.1)')
  31. ax.plot(x, y)
  32. ax.spines['left'].set_position(('axes', 0.6))
  33. ax.spines['right'].set_color('none')
  34. ax.spines['bottom'].set_position(('axes', 0.1))
  35. ax.spines['top'].set_color('none')
  36. ax.spines['left'].set_smart_bounds(True)
  37. ax.spines['bottom'].set_smart_bounds(True)
  38. ax.xaxis.set_ticks_position('bottom')
  39. ax.yaxis.set_ticks_position('left')
  41. ax = fig.add_subplot(2, 2, 4)
  42. ax.set_title('spines at data (1, 2)')
  43. ax.plot(x, y)
  44. ax.spines['left'].set_position(('data', 1))
  45. ax.spines['right'].set_color('none')
  46. ax.spines['bottom'].set_position(('data', 2))
  47. ax.spines['top'].set_color('none')
  48. ax.spines['left'].set_smart_bounds(True)
  49. ax.spines['bottom'].set_smart_bounds(True)
  50. ax.xaxis.set_ticks_position('bottom')
  51. ax.yaxis.set_ticks_position('left')

Spine的放置演示

定义一个调整轴Spine位置的方法

  1. def adjust_spines(ax, spines):
  2.     for loc, spine in ax.spines.items():
  3.         if loc in spines:
  4.             spine.set_position(('outward', 10))  # outward by 10 points
  5.             spine.set_smart_bounds(True)
  6.         else:
  7.             spine.set_color('none')  # don't draw spine
  9.     # turn off ticks where there is no spine
  10.     if 'left' in spines:
  11.         ax.yaxis.set_ticks_position('left')
  12.     else:
  13.         # no yaxis ticks
  14.         ax.yaxis.set_ticks([])
  16.     if 'bottom' in spines:
  17.         ax.xaxis.set_ticks_position('bottom')
  18.     else:
  19.         # no xaxis ticks
  20.         ax.xaxis.set_ticks([])

使用我们的新adjust_spines方法创建另一个图形。

  1. fig = plt.figure()
  3. x = np.linspace(0, 2 * np.pi, 100)
  4. y = 2 * np.sin(x)
  6. ax = fig.add_subplot(2, 2, 1)
  7. ax.plot(x, y, clip_on=False)
  8. adjust_spines(ax, ['left'])
  10. ax = fig.add_subplot(2, 2, 2)
  11. ax.plot(x, y, clip_on=False)
  12. adjust_spines(ax, [])
  14. ax = fig.add_subplot(2, 2, 3)
  15. ax.plot(x, y, clip_on=False)
  16. adjust_spines(ax, ['left', 'bottom'])
  18. ax = fig.add_subplot(2, 2, 4)
  19. ax.plot(x, y, clip_on=False)
  20. adjust_spines(ax, ['bottom'])
  22. plt.show()

Spine的放置演示2

下载这个示例