In data OME in MASS I would like to extract the first 5 observations per
subject (=ID). So I do
library(MASS)
OMEsub - split(OME, OME$ID)
OMEsub - lapply(OMEsub,function(x)x[1:5,])
unsplit(OMEsub, OME$ID)
- which results in
[[1]]
[1] 1 1 1 1 1
[[2]]
[1] 30 30 30 30 30
[[3]]
[1] low low low
Søren Højsgaard [EMAIL PROTECTED] writes:
In data OME in MASS I would like to extract the first 5 observations per
subject (=ID). So I do
library(MASS)
OMEsub - split(OME, OME$ID)
OMEsub - lapply(OMEsub,function(x)x[1:5,])
unsplit(OMEsub, OME$ID)
- which results in
[[1]]
[1] 1
On Tue, 2005-09-27 at 19:12 +0200, Søren Højsgaard wrote:
In data OME in MASS I would like to extract the first 5 observations
per subject (=ID). So I do
library(MASS)
OMEsub - split(OME, OME$ID)
OMEsub - lapply(OMEsub,function(x)x[1:5,])
unsplit(OMEsub, OME$ID)
- which results in
