data manipulation
Marc Bernard <bernarduse1 <at> yahoo.fr> writes:
I would be grateful if you can help me. My problem is the following: I have a data set like: ID time X1 X2 1 1 x111 x211 1 2 x112 x212
....
where X1 and X2 are 2 covariates and "time" is the time of observation and ID
indicates the cluster.
I want to merge the above data by creating a new variable "X" and "type" as
follows:
ID time X type 1 1 x111 X1
.... Try reshape. And have courage, this is one of the more complex interfaces in R, very powerful, but intimidating. Dieter