Deprecated function to plot a covariance ellipse. Use plot_covariance
    instead.

    See Also
    --------

    plot_covariance

def plot_covariance_ellipse(
        mean, cov=None, variance=1.0, std=None,
        ellipse=None, title=None, axis_equal=True, show_semiaxis=False,
        facecolor=None, edgecolor=None,
        fc='none', ec='#004080',
        alpha=1.0, xlim=None, ylim=None,
        ls='solid'):
    """
    Deprecated function to plot a covariance ellipse. Use plot_covariance
    instead.

    See Also
    --------

    plot_covariance
    """

    warnings.warn("deprecated, use plot_covariance instead", DeprecationWarning)
    plot_covariance(mean=mean, cov=cov, variance=variance, std=std,
                    ellipse=ellipse, title=title, axis_equal=axis_equal,
                    show_semiaxis=show_semiaxis, facecolor=facecolor,
                    edgecolor=edgecolor, fc=fc, ec=ec, alpha=alpha,
                    xlim=xlim, ylim=ylim, ls=ls)