.. _pylab_examples-mathtext_demo:

pylab_examples example code: mathtext_demo.py
=============================================



.. plot:: /builddir/build/BUILD/matplotlib-1.2.0/doc/mpl_examples/pylab_examples/mathtext_demo.py

::

    #!/usr/bin/env python
    """
    Use matplotlib's internal LaTeX parser and layout engine.  For true
    latex rendering, see the text.usetex option
    """
    import numpy as np
    from matplotlib.pyplot import figure, show
    
    fig = figure()
    fig.subplots_adjust(bottom=0.2)
    
    ax = fig.add_subplot(111, axisbg='y')
    ax.plot([1,2,3], 'r')
    x = np.arange(0.0, 3.0, 0.1)
    
    ax.grid(True)
    ax.set_xlabel(r'$\Delta_i^j$', fontsize=20)
    ax.set_ylabel(r'$\Delta_{i+1}^j$', fontsize=20)
    tex = r'$\mathcal{R}\prod_{i=\alpha_{i+1}}^\infty a_i\sin(2 \pi f x_i)$'
    
    ax.text(1, 1.6, tex, fontsize=20, va='bottom')
    
    ax.legend([r"$\sqrt{x^2}$"])
    
    ax.set_title(r'$\Delta_i^j \hspace{0.4} \mathrm{versus} \hspace{0.4} \Delta_{i+1}^j$', fontsize=20)
    
    
    show()
    
    

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