On 06.03.2009, at 16:48, soeren.vo...@eawag.ch wrote:
### example:start
v <- sample(rnorm(200), 100, replace=T)
k <- rep.int(c("locA", "locB", "locC", "locD"), 25)
tapply(v, k, summary)
### example:end
... (hopefully) produces 4 summaries of v according to k group
membership. How can I transform the output into a nice table with
the croups as columns and the interesting statistics as lines?
### Right??? and good??? solution:
sapply(by(v, list(area=k), function(x)x, simplify=F), summary)
Sören (again)
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
