On Fri, 2008-07-18 at 13:45 +0200, Antje wrote: > Hi there, > > I have a very simple question. If I execute the following code: > > > test <- function(x) { > name <- paste(x,"info_within_function") > c(1,2,3,4,5) > } >
Here your test is returning c(1,2,3,4,5), and is doing nothing with name, other than to create the object, 'name'. ## ones presumes your real example is more complicated than this so ## I'll stick with the function test, but just have it return the ## values you asked for test <- function(x) { c(1,2,3,4,5) } ## we then apply this ret <- lapply(1:10, test) ## now that we have a list, we change the names to what you want names(ret) <- paste(1:10, "info_within_function") This does cause a problem though as you can't access the components directly via: ret$1 info_within_function You need to quote them: ret$`1 info_within_function` And even if you replace the space with a "_", the same problem persists: names(ret) <- paste(1:10, "info_within_function", sep = "_") ret$1_info_within_function ret$`1_info_within_function` So depending on why you want the list components named this way, you might consider altering the name so that it doesn't start with a number and doesn't contain spaces, otherwise you'll need to quote the names when trying to access the components of the list by name. Does that help? G > ret <- lapply(1:10, test) > > > , I end up with a list and each entry is just numbered [[1]], [[2]], ... > [[10]] > > How can I force the result entries gettings names which are determined within > the function. For this example, I'd like the entries named like: > > "1 info_within_function" instead of [[1]] > "2 info_within_function" instead of [[2]] > and so on. > (that's why I put this strange "name <- ..." line inside) > > Can anybody help me what I have to do to get the returned list entries like > this? > > Thanks a lot! > > Antje > > ______________________________________________ > 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. -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Dr. Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% ______________________________________________ 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.