Hi r-help-boun...@r-project.org napsal dne 09.12.2010 12:41:47:
> Dear Sir, > > Sorry to bother you again. Sir, the R code provided by you gives me following output. > > > yy <- lapply(c(257, 520, 110), seq, to=0, by=-100) > > yy > [[1]] > [1] 257 157 57 > > [[2]] > [1] 520 420 320 220 120 20 > > [[3]] > [1] 110 10 > > The biggest constraint for me is here as an example I have taken only three > cases i.e. c(257, 520, 110), however in reality I will be dealing with no of > cases and that number is unknown. But your code will certainly generate me the > required numbers. In above case for doing further calculations, I can define say > > yy1 = as.numeric(yy[[1]]) > yy2 = as.numeric(yy[2]]) > yy3 = as.numeric(yy[[3]]) Why? Those values are already numeric. lapply(yy, is.numeric) [[1]] [1] TRUE [[2]] [1] TRUE [[3]] [1] TRUE and you can use the same construction to perform almost any operation on list. lapply(yy, max) lapply(yy, mean) lapply(yy, sd) lapply(yy, t.test) Regards Petr > > But when the number of cases are unknown, perhaps this is not the practical > way of me defining individually. So is there any way that I can have all the > sequence numbers generated can be accommodated in a single dataframe. I > sincerely apologize for disturbing you Sir and hope I am able to put up my > problem in a proper manner. > > Regards > > Vincy Pyne > > > --- On Thu, 12/9/10, Jan van der Laan <rh...@eoos.dds.nl> wrote: > > From: Jan van der Laan <rh...@eoos.dds.nl> > Subject: Re: [R] Sequence generation in a table > To: r-help@r-project.org, vincy_p...@yahoo.ca > Received: Thursday, December 9, 2010, 10:57 AM > > Vincy, > > I suppose the following does what you want. yy is now a list which allows for > differing lengths of the vectors. > > > yy <- lapply(c(257, 520, 110), seq, to=0, by=-100) > > yy[[1]] > [1] 257 157 57 > > yy[[2]] > [1] 520 420 320 220 120 20 > > > Regards, > Jan > > > On 9-12-2010 11:40, Vincy Pyne wrote: > > c(257, 520, 110) > > > > [[alternative HTML version deleted]] > > ______________________________________________ > 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.