In order to smooth out the display of a series you can specify a
rollPeriod. This will result in each plotted point
representing an average of the number of timestamps specified in the
roll period. The roll period will be displayed in a text box at the
bottom-left of the plot so that viewers of the plot are aware of the
averaging and so that they can change it if they like.
The dyRoller() function adds a roller with a specified
roll period: