[R] Selecting data based on the range of dates
Belle
ping.yi at gmail.com
Thu Feb 24 22:22:55 CET 2011
Hi:
I want to give an index with all the dates between Sept. to Nov. as 1, and
anything else is 0. It doesn't matter which year it is, as long as it is
between Sept. to Nov, then set up to 1, otherwise is 0.
My data frame looks like below:
ID Date
201 1/1/05 6:07 AM
201 3/27/09 9:45 AM
201 9/29/09 8:44 AM
203 10/16/08 10:01 AM
203 10/28/08 9:45 AM
203 10/31/08 11:12 AM
203 11/7/08 11:32 AM
203 11/14/08 10:30 AM
203 11/19/08 10:40 AM
203 11/25/08 3:25 PM
203 12/4/08 10:48 AM
203 1/28/09 11:04 AM
203 2/12/09 3:15 PM
203 2/16/09 2:59 PM
203 2/24/09 2:45 PM
203 3/4/09 10:14 AM
203 3/27/09 11:36 AM
203 4/1/09 10:43 AM
203 4/16/09 2:28 PM
203 4/22/09 2:37 PM
203 4/29/09 10:48 AM
203 4/1/09 10:45 AM
203 12/3/09 9:07 AM
203 12/11/09 8:58 AM
203 1/7/10 8:53 AM
Thanks
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