Displaying 2 results from an estimated 2 matches for "taylr".
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taylor
2005 Oct 13
1
subsetting data frame using by() or tapply() or other
...6 algb-2 A 1992 0.09747155
7 algb-2 A 1993 0.84772253
8 algb-2 A 1997 0.43974081
9 algb-2 A 1998 0.83108544
10 algb-2 A 2000 0.22291192
11 algb-3 A 1992 0.44234175
12 algb-3 A 1993 0.54089534
5680 taylr-73 B 2001 0.43918082
5681 taylr-73 B 2002 0.34694427
5682 taylr-73 B 2003 3.35619190
5683 taylr-73 B 2004 0.71575815
5684 taylr-73 B 2005 0.42038506
5685 taylr-74 B 1992 3.88410354
5686 taylr-74 B 1993 3.32472557
5687 taylr-74...
2005 Oct 12
2
subsetting with by() or other function??
I think I must be missing something obvious, but I'm having trouble
getting a data transformation to work on groupings of data within a data
frame (csss3) as defined by 2 factors (population, locid). The data are
sorted by year within locid within population and I want to lag another
variable (dbc), i.e, shift them down by 1 row replacing the first row with
NA, within groups defined by