Dear R users,
I want to make a barplot with bars that can be non-continuous. An example
will be the presence and absence of some events over time, e.g. a bunch of
people that are either in the office or not in the office, for some period
of time. I want to visualize this in a bar plot like this:

Person 1: *********             ********     *******
Person 2:       *********     *****   **********
Person 3:   **************     ***********

Any tips on how this can be done?

Thanks,
Lars

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