I have a very basic question, so I am sorry to bother the list members if
this is too obvious.
I have observations about people at 24 time points and oftentimes I have
more than 1 observation per time period. The data is about earnings, so
for instance, if a person had two jobs in june 1996, i have two
observations for them then. If they had 3 jobs in october 1996, I would
have 3 observations for that time period- one observation per job.
For now, all I would like to do it create a new variable "jobs" which
arbitrarily assigns a number to each job within a time period. (ie. 1 for
the first job in 6/96, 2 for the second, 1 for the first job in 10/96... etc)
(eventually i will use this variable to reshape the data)
I hope my question makes sense. I can't seem to find a command that will
do this, but I may have just missed it.