[R] removing observations
Roger D. Peng
rpeng at jhsph.edu
Fri Aug 13 17:06:28 CEST 2004
You probably want something like
subset(dataset, year == 1970)
and loop through the years.
Or, perhaps even classier, would be
datalist <- split(dataset, as.factor(year))
results <- lapply(datalist, myAnalysisFunction)
Justin G. Gardner wrote:
> Hello R list.
> I am sure this is an easy question, please forgive my
> ignorance of R.
> I have a panel data set (25 years) and I would like to break
> it up by year, and run a few tests. How is this done in R?
> In STATA it is quite simple (keep if year =1970). If someone
> could give me an example of how to do it for a single year I
> am sure I could make a little loop to do it for all 25.
> R-help at stat.math.ethz.ch mailing list
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
More information about the R-help