I have some time series data, where the data is in 15 min intervals for a year. What I would like to do is to find e.g. the max value for one month, or week. Is there some way/command to easily divide time series data into monthly/weekly intervals so it also accounts for skewed months, or do I need to do some manuel coding like taking from 01 to 30 (or something like that) to get the data for one month.
Regards