Mapping of tick frequencies to multiples allowed for that ticking. The default is :
self.intervald = {
YEARLY : [1, 2, 4, 5, 10, 20, 40, 50, 100, 200, 400, 500,
1000, 2000, 4000, 5000, 10000],
MONTHLY : [1, 2, 3, 4, 6],
DAILY : [1, 2, 3, 7, 14, 21],
HOURLY : [1, 2, 3, 4, 6, 12],
MINUTELY: [1, 5, 10, 15, 30],
SECONDLY: [1, 5, 10, 15, 30],
MICROSECONDLY: [1, 2, 5, 10, 20, 50, 100, 200, 500,
1000, 2000, 5000, 10000, 20000, 50000,
100000, 200000, 500000, 1000000],
}
where the keys are defined in dateutil.rrule
.
The interval is used to specify multiples that are appropriate for the frequency of ticking. For instance, every 7 days is sensible for daily ticks, but for minutes/seconds, 15 or 30 make sense.
When customizing, you should only modify the values for the existing keys. You should not add or delete entries.
Example for forcing ticks every 3 hours:
locator = AutoDateLocator() locator.intervald[HOURLY] = [3] # only show every 3 hours
On autoscale, this class picks the best DateLocator
to set the view limits and the tick locations.
The following pages refer to to this document either explicitly or contain code examples using this.
matplotlib.pyplot.plot_date
matplotlib.axes._axes.Axes.plot_date
matplotlib.dates.AutoDateFormatter
matplotlib.dates
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