utils.py 文件源码

def get_dasharray(obj, i=None):
    """Get an SVG dash array for the given matplotlib linestyle

    Parameters
    ----------
    obj : matplotlib object
        The matplotlib line or path object, which must have a get_linestyle()
        method which returns a valid matplotlib line code
    i : integer (optional)

    Returns
    -------
    dasharray : string
        The HTML/SVG dasharray code associated with the object.
    """
    if obj.__dict__.get('_dashSeq', None) is not None:
        return ','.join(map(str, obj._dashSeq))
    else:
        ls = obj.get_linestyle()
        if i is not None:
            ls = ls[i]

        dasharray = LINESTYLES.get(ls, None)
        if dasharray is None:
            warnings.warn("dash style '{0}' not understood: "
                          "defaulting to solid.".format(ls))
            dasharray = LINESTYLES['-']
        return dasharray