def get_metric_data_points(self, metric, start, end, points=None,
            resolution=None, stats=None):
        """
        Returns the data points for a given metric for the given period. The
        'start' and 'end' times must be specified; they can be be either Python
        date/datetime values, or a Unix timestamp.

        The 'points' parameter represents the number of points to return. The
        'resolution' parameter represents the granularity of the data. You must
        specify either 'points' or 'resolution'. The allowed values for
        resolution are:
            FULL
            MIN5
            MIN20
            MIN60
            MIN240
            MIN1440

        Finally, the 'stats' parameter specifies the stats you want returned.
        By default only the 'average' is returned. You omit this parameter,
        pass in a single value, or pass in a list of values. The allowed values
        are:
            average
            variance
            min
            max
        """
        allowed_resolutions = ("FULL", "MIN5", "MIN20", "MIN60", "MIN240",
                "MIN1440")
        if not (points or resolution):
            raise exc.MissingMonitoringCheckGranularity("You must specify "
                    "either the 'points' or 'resolution' parameter when "
                    "fetching metrics.")
        if resolution:
            if resolution.upper() not in allowed_resolutions:
                raise exc.InvalidMonitoringMetricsResolution("The specified "
                        "resolution '%s' is not valid. The valid values are: "
                        "%s." % (resolution, str(allowed_resolutions)))
        start_tm = utils.to_timestamp(start)
        end_tm = utils.to_timestamp(end)
        # NOTE: For some odd reason, the timestamps required for this must be
        # in milliseconds, instead of the UNIX standard for timestamps, which
        # is in seconds. So the values here are multiplied by 1000 to make it
        # work. If the API is ever corrected, the next two lines should be
        # removed. GitHub #176.
        start_tm *= 1000
        end_tm *= 1000
        qparms = []
        # Timestamps with fractional seconds currently cause a 408 (timeout)
        qparms.append("from=%s" % int(start_tm))
        qparms.append("to=%s" % int(end_tm))
        if points:
            qparms.append("points=%s" % points)
        if resolution:
            qparms.append("resolution=%s" % resolution.upper())
        if stats:
            stats = utils.coerce_to_list(stats)
            for stat in stats:
                qparms.append("select=%s" % stat)
        qparm = "&".join(qparms)
        uri = "/%s/%s/plot?%s" % (self.uri_base, metric, qparm)
        try:
            resp, resp_body = self.api.method_get(uri)
        except exc.BadRequest as e:
            msg = e.message
            dtls = e.details
            if msg.startswith("Validation error"):
                raise exc.InvalidMonitoringMetricsRequest("Your request was "
                        "invalid: '%s'" % dtls)
            else:
                raise
        return resp_body["values"]