How to make a timeseries boxplot in R

Question

I\'m trying to make a time series boxplot using ggplot2.

I have montly values for many individuals.

I need to make a timeseries boxplot by month

Answer 1

Another way to do this without having to change to date format and do any sorting etc. is to simply add the date as a grouping factor like so:

ggplot(mydata) + geom_boxplot(aes(x = date, y = measure, group = date))