.. _pylab_examples-usetex_baseline_test:

pylab_examples example code: usetex_baseline_test.py
====================================================



.. plot:: /home/mandrake/rpm/BUILD/matplotlib-1.1.1/doc/mpl_examples/pylab_examples/usetex_baseline_test.py

::

    
    import matplotlib
    import matplotlib.pyplot as plt
    import matplotlib.axes as maxes
    
    class Axes(maxes.Axes):
        """
        A hackish way to simultaneously draw texts w/ usetex=True and
        usetex=False in the same figure. It does not work in the ps backend.
        """
        def __init__(self, *kl, **kw):
            self.usetex = kw.pop("usetex", "False")
            self.preview = kw.pop("preview", "False")
    
            maxes.Axes.__init__(self, *kl, **kw)
    
        def draw(self, renderer):
            usetex = plt.rcParams["text.usetex"]
            preview = plt.rcParams["text.latex.preview"]
            plt.rcParams["text.usetex"] = self.usetex
            plt.rcParams["text.latex.preview"] = self.preview
    
            maxes.Axes.draw(self, renderer)
    
            plt.rcParams["text.usetex"] = usetex
            plt.rcParams["text.latex.preview"] = preview
    
    Subplot = maxes.subplot_class_factory(Axes)
    
    
    def test_window_extent(ax, usetex, preview):
    
        va = "baseline"
        ax.xaxis.set_visible(False)
        ax.yaxis.set_visible(False)
    
    
        #t = ax.text(0., 0., r"mlp", va="baseline", size=150)
        text_kw = dict(va=va,
                       size=50,
                       bbox=dict(pad=0., ec="k", fc="none"))
    
    
        test_strings = ["lg", r"$\frac{1}{2}\pi$",
                        r"$p^{3^A}$", r"$p_{3_2}$"]
    
        ax.axvline(0, color="r")
    
        for i, s in enumerate(test_strings):
    
            ax.axhline(i, color="r")
            ax.text(0., 3-i, s, **text_kw)
    
        ax.set_xlim(-0.1,1.1)
        ax.set_ylim(-.8,3.9)
    
    
        ax.set_title("usetex=%s\npreview=%s" % (str(usetex), str(preview)))
    
    
    
    F = plt.figure(figsize=(2.*3,6.5))
    
    for i, usetex, preview in [[0, False, False],
                               [1, True, False],
                               [2, True, True]]:
        ax = Subplot(F, 1, 3, i+1, usetex=usetex, preview=preview)
        F.add_subplot(ax)
        F.subplots_adjust(top=0.85)
    
        test_window_extent(ax, usetex=usetex, preview=preview)
    
    
    plt.draw()
    plt.show()
    
    

Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)