Class DayLocator

lib/matplotlib/dates.py:1555–1580

Make ticks on occurrences of each day of the month. For example, 1, 15, 30.

class DayLocator(RRuleLocator):
    """
    Make ticks on occurrences of each day of the month.  For example,
    1, 15, 30.
    """
    def __init__(self, bymonthday=None, interval=1, tz=None):
        """
        Parameters
        ----------
        bymonthday : int or list of int, default: all days
            Ticks will be placed on every day in *bymonthday*. Default is
            ``bymonthday=range(1, 32)``, i.e., every day of the month.
        interval : int, default: 1
            The interval between each iteration. For example, if
            ``interval=2``, mark every second occurrence.
        tz : str or `~datetime.tzinfo`, default: :rc:`timezone`
            Ticks timezone. If a string, *tz* is passed to `dateutil.tz`.
        """
        if interval != int(interval) or interval < 1:
            raise ValueError("interval must be an integer greater than 0")
        if bymonthday is None:
            bymonthday = range(1, 32)

        rule = rrulewrapper(DAILY, bymonthday=bymonthday,
                            interval=interval, **self.hms0d)
        super().__init__(rule, tz=tz)


class HourLocator(RRuleLocator):