Analyze a dataset of 200 subjects who carry a medical equipment. The piece of equipment records the time when they use the device.
1/Import the dataset
2/Produce calendar plots for 10 or 20 subjects (using ggplot2)
3/Produce plots showing the number of events over time (using geom_step)
4/Produce group trajectories using geom_step and geom_smooth
Examples of the plots are provided as an attachment