[R] Subset of a subset?

Hi All- I have created a subset of my original csv for the times I am interested in (9, 12, 3). I have a subset for all of those times then each individually. I would like to have specific case studies to analyze individually for those times. For example, I want to look at 2009/06/01-2009/06/10. I

[R] Selecting 3 different hours in a day

Hello, I have a csv with 5months of hourly data for 4 years. I would like to get 9am, 12pm and 3pm from each day and create a subset or a new data frame that I can analyze. The time are from hour 0-23 for each day. I am not sure how to create a loop which will take out each of these hours and cre