Displaying 3 results from an estimated 3 matches for "38.43013".
2007 Apr 02
3
Create a new var reflecting the order of subjects in existing var
Dear R helpers
I have a data set sth like this:
set.seed(123);dat <- data.frame(ID= c(rep(1,2),rep(2,3), rep(3,3), rep(4,4),
rep(5,5)),
var1 =rnorm(17, 35,2),
var2=runif(17,0,1))
dat
ID var1 var2
1 1 33.87905 0.02461368
2 1 34.53965 0.47779597
3 2 38.11742 0.75845954
4 2 35.14102 0.21640794
5 2 35.25858 0.31818101
6 3 38.43013
2007 Apr 02
1
Res: Create a new var reflecting the order of subjects in existing var
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2007 Apr 03
1
Behavior of seq_along (was: Create a new var reflecting the order of subjects in existing var)
I am moving this from r-help to r-devel. Based on offline communications
with Jim, suppose dat is defined as follows:
set.seed(123)
dat <- data.frame(ID= c(rep(1,2),rep(2,3), rep(3,3), rep(4,4),
rep(5,5)), var1 =rnorm(17, 35,2), var2=runif(17,0,1))
# Then this ave call works as expected:
ave(dat$ID, dat$ID, FUN = function(x) seq_along(x))
# but this apparently identical calculation