Usetex基线测试

Usetex基线测试示例

  1. import matplotlib.pyplot as plt
  2. import matplotlib.axes as maxes
  4. from matplotlib import rcParams
  5. rcParams['text.usetex'] = True
  8. class Axes(maxes.Axes):
  9.     """
  10.     A hackish way to simultaneously draw texts w/ usetex=True and
  11.     usetex=False in the same figure. It does not work in the ps backend.
  12.     """
  14.     def __init__(self, *args, usetex=False, preview=False, **kwargs):
  15.         self.usetex = usetex
  16.         self.preview = preview
  17.         super().__init__(*args, **kwargs)
  19.     def draw(self, renderer):
  20.         with plt.rc_context({"text.usetex": self.usetex,
  21.                              "text.latex.preview": self.preview}):
  22.             super().draw(renderer)
  25. subplot = maxes.subplot_class_factory(Axes)
  28. def test_window_extent(ax, usetex, preview):
  30.     va = "baseline"
  31.     ax.xaxis.set_visible(False)
  32.     ax.yaxis.set_visible(False)
  34.     text_kw = dict(va=va,
  35.                    size=50,
  36.                    bbox=dict(pad=0., ec="k", fc="none"))
  38.     test_strings = ["lg", r"$\frac{1}{2}\pi$",
  39.                     r"$p^{3^A}$", r"$p_{3_2}$"]
  41.     ax.axvline(0, color="r")
  43.     for i, s in enumerate(test_strings):
  45.         ax.axhline(i, color="r")
  46.         ax.text(0., 3 - i, s, **text_kw)
  48.     ax.set_xlim(-0.1, 1.1)
  49.     ax.set_ylim(-.8, 3.9)
  51.     ax.set_title("usetex=%s\npreview=%s" % (str(usetex), str(preview)))
  54. fig = plt.figure(figsize=(2 * 3, 6.5))
  56. for i, usetex, preview in [[0, False, False],
  57.                            [1, True, False],
  58.                            [2, True, True]]:
  59.     ax = subplot(fig, 1, 3, i + 1, usetex=usetex, preview=preview)
  60.     fig.add_subplot(ax)
  61.     fig.subplots_adjust(top=0.85)
  63.     test_window_extent(ax, usetex=usetex, preview=preview)
  66. plt.show()

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