花式箭头符号演示

花式箭头符号演示

  1. import matplotlib.patches as mpatches
  2. import matplotlib.pyplot as plt
  4. styles = mpatches.ArrowStyle.get_styles()
  6. ncol = 2
  7. nrow = (len(styles) + 1) // ncol
  8. figheight = (nrow + 0.5)
  9. fig1 = plt.figure(1, (4 * ncol / 1.5, figheight / 1.5))
  10. fontsize = 0.2 * 70
  13. ax = fig1.add_axes([0, 0, 1, 1], frameon=False, aspect=1.)
  15. ax.set_xlim(0, 4 * ncol)
  16. ax.set_ylim(0, figheight)
  19. def to_texstring(s):
  20.     s = s.replace("<", r"$<$")
  21.     s = s.replace(">", r"$>$")
  22.     s = s.replace("|", r"$|$")
  23.     return s
  26. for i, (stylename, styleclass) in enumerate(sorted(styles.items())):
  27.     x = 3.2 + (i // nrow) * 4
  28.     y = (figheight - 0.7 - i % nrow)  # /figheight
  29.     p = mpatches.Circle((x, y), 0.2)
  30.     ax.add_patch(p)
  32.     ax.annotate(to_texstring(stylename), (x, y),
  33.                 (x - 1.2, y),
  34.                 ha="right", va="center",
  35.                 size=fontsize,
  36.                 arrowprops=dict(arrowstyle=stylename,
  37.                                 patchB=p,
  38.                                 shrinkA=5,
  39.                                 shrinkB=5,
  40.                                 fc="k", ec="k",
  41.                                 connectionstyle="arc3,rad=-0.05",
  42.                                 ),
  43.                 bbox=dict(boxstyle="square", fc="w"))
  45. ax.xaxis.set_visible(False)
  46. ax.yaxis.set_visible(False)
  48. plt.show()

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