CODEWITHSUNDEEP
pythonpython-3.xmatplotlibaxis-labels
user136555
user136555

Reputation: 267

Using datetime object for a scatter plot?

I would like to construct a scatter plot, using date time objects on both axis. Namely, dates (formatted as %YYYY-MM-DD) will be placed on one axis, the second axis will display 24 hour scale (i.e. from 0 to 24) and contain timestamps of events (formatted as %HH:MM in 24-hour format), such a user logging into the server, that occurred on a given date. There could be several events on a particular date, for example, a user logging 2 or 3 times.

My questions: how do I use such datetime objects, while creating a plot using matplotlib? Do I need to convert them in order to feed into matplotlib?

Upvotes: 1

Views: 979

Answers (1)

ArtyGator
ArtyGator

Reputation: 61

As in https://stackoverflow.com/a/1574146/12540580 :

You must first convert your timestamps to Python datetime objects (use datetime.strptime). Then use date2num to convert the dates to matplotlib format.

Plot the dates and values using plot_date:

dates = matplotlib.dates.date2num(list_of_datetimes)
matplotlib.pyplot.plot_date(dates, values)

Upvotes: 1

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