[R] stacking data.frame in a list

[Peter Dalgaard BSA]

"Danardono" <daodao99 at student.umu.se> writes:

> The expected result will be like,
> ID       age.day state
> 772307       81     0
> 772307      141     0
> 772307      234     0
> 772307      321     0
> 772307      437     0
> 772307      499     0
> 772307      601     1
> 772307      689     1
> 772307      801     0
> 772307      884    99
> 772307      961     1
> 1084506      80     0
> 1084506     148     0
> 1084506     249    99
> 1084506     344    99

This seems to do it:

do.call("rbind",lapply(names(x),function(i)
                                  cbind(ID=rep(i,nrow(x[[i]])),x[[i]])))

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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