@classmethod
def from_argparse(cls, opts):
    """
        Initialize an instance of the ethincaParameters class from an
        argparse.OptionParser instance. This assumes that
        insert_ethinca_metric_options
        and
        verify_ethinca_metric_options
        have already been called before initializing the class.
        """
    return cls(opts.ethinca_pn_order, opts.filter_cutoff, opts.
        ethinca_frequency_step, fLow=None, full_ethinca=opts.
        calculate_ethinca_metric, time_ethinca=opts.
        calculate_time_metric_components)
