Displaying 1 result from an estimated 1 matches for "date_obs".
2011 Mar 10
2
within group sequential subtraction
...the
time between separate observations for a group of individuals.
My data:
data <- structure(list(group = c("IND1", "IND1", "IND2",
"IND2", "IND2", "IND3", "IND4", "IND5",
"IND6", "IND6"), date_obs = structure(c(6468,
7063, 9981, 14186, 14372, 5129, 9767, 11168, 10243, 10647), class =
"Date")), .Names = c("group",
"date_obs"), row.names = c(NA, 10L), class = "data.frame")
So I start with:
group date_obs
1 IND1 1987-09-17
2 IND1 1989-05-04
3...