def geckoboard_funnel(request, frequency=settings.STATISTIC_FREQUENCY_DAILY):
    """
    Returns a funnel chart for the metrics specified in the GET variables.
    """

    # get all the parameters for this function
    params = get_gecko_params(request, cumulative=True)
    metrics = Metric.objects.filter(uid__in=params['uids'])
    items = [(metric.latest_count(frequency=params['frequency'], count=not params['cumulative'],
        cumulative=params['cumulative']), metric.title) for metric in metrics]
    
    return {
        'items'     : items,
        'type'      : params['type'],
        'percentage': params['percentage'],
        'sort'      : params['sort'],
    }