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2005 Nov 08
5
Using split and sapply to return entire lines
Hello,
I have a data manipulation problem that I can easily resolve by using
perl or python to pre-process the data, but I would prefer to do it
directly in R.
Given, for example:
month length ratio monthly1 monthly2
1 Jan 23 0.1 9 6
2 Jan 45 0.2 9 6
3 Jan 16 0.3 9 6
4 Feb 14 0.2 1 9
5 Mar 98 0.4 2 2
6 Mar 02 0.6 2 2
(FWIW, monthly1 and monthly2 are unchanged for each month)
I understand how to do aggregations o...