I think something like this is what you are looking for, but to be honest, I don't quite understand what you are looking for: can you actually write out the desired result:
tapply(df$x, df$Var, table) where df is the name of your data. df <- structure(list(Var = c(201L, 201L, 201L, 201L, 202L, 202L, 202L, 202L, 203L, 203L, 203L, 203L), rep = c(1L, 2L, 3L, 4L, 1L, 2L, 3L, 4L, 1L, 2L, 3L, 3L), x = c(1L, 3L, 3L, 3L, 1L, 1L, 3L, 5L, 2L, 2L, 3L, 3L)), .Names = c("Var", "rep", "x"), class = "data.frame", row.names = c(NA, -12L)) Michael On Wed, Nov 23, 2011 at 4:07 PM, reynaldo_ns <reynaldo...@hotmail.com> wrote: > Hello everybody > > I am new on R > I have some problem when i try to obtain frequency table > which script do I need to write in R in order to obtain the frecuency of a > value per repetition > You could see my example > > Var. rep x I need to obtain these > 201 1 1 201 the x=1 (repeat once), x=3 > (repeat 3 times) > 201 2 3 202 the X=1 (repeat 2 twice), > the x=3 (repeat once), > 201 3 3 203 the X=2 (rep 3 veces), valor > 3 (rep 2veces) > 201 4 3 > 202 1 1 How can I do on R? > 202 2 1 > 202 3 3 > 202 4 5 > 203 1 2 > 203 2 2 > 203 3 3 > 203 3 3 > > > -- > View this message in context: > http://r.789695.n4.nabble.com/Frequency-table-tp4101612p4101612.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. ______________________________________________ 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.