DEPRECATED. Use plot_gaussian_pdf() instead. This is poorly named, as
    there are multiple ways to plot a Gaussian.

def plot_gaussian(mean=0., variance=1.,
                  ax=None,
                  mean_line=False,
                  xlim=None,
                  ylim=None,
                  xlabel=None,
                  ylabel=None,
                  label=None):
    """
    DEPRECATED. Use plot_gaussian_pdf() instead. This is poorly named, as
    there are multiple ways to plot a Gaussian.
    """

    warnings.warn('This function is deprecated. It is poorly named. '\
                  'A Gaussian can be plotted as a PDF or CDF. This '\
                  'plots a PDF. Use plot_gaussian_pdf() instead,',
                  DeprecationWarning)
    return plot_gaussian_pdf(mean, variance, ax, mean_line, xlim, ylim, xlabel,
                             ylabel, label)