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tracegb
2010 Mar 22
1
Accessing data in groups created with split() and other beginner questions
Hi, very new to R here...
I have a data frame called 'set' with 100k+ rows in it that looks like this:
subject timestamp yvalue traceabs subjtrace
1 1 1992-07-12 06:05:00 12 1 1-1
2 1 1992-07-12 06:10:00 15 1 1-1
3 1 1992-07-12 06:15:00 17 1 1-1
4 1 1992-07-12 06:20:00 20 1 1-1
5 1 1992-07-12 06:25:00 24 1 1-1
......