You could use assign(name, newValue, envir=env) but I prefer env[[name]]<-newValue since the env[[name]] works on either side of the assignment operator. E.g.,
> env <- new.env() # or environment() if you prefer to put things in the > current environment > objNames <- load("Robject.RData", envir=env) # contains zzz<-17 and xxx<-23:24 > sapply(objNames, function(objName)class(env[[objName]]) <- "someClass") zzz xxx "someClass" "someClass" > env$xxx [1] 23 24 attr(,"class") [1] "someClass" > env$zzz [1] 17 attr(,"class") [1] "someClass" Bill Dunlap Spotfire, TIBCO Software wdunlap tibco.com > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On > Behalf > Of Davis, Brian > Sent: Tuesday, September 10, 2013 12:55 PM > To: r-help@r-project.org > Subject: [R] assigning the class of an object > > I'm sure this has been answered before but alas my googlefoo is not that > strong. > > I have several .Rdata files with a single object in them. I need to set the > class of the > object to "myClass". Unfortunately, I don't know the name of the object > beforehand. > Obviously I could ls() and get the name but as I have quite a few of these > I'd like to do it > programmatically. > > > I thought something like this would work, but I get an error. > > >obj_name <- load("Robject.RData") # get the name of the loaded object > >class(get(obj_name)) <- "myClass" > > Error in class(get(obj_name)) <- " myClass " : > could not find function "get<-" > > > So I guess the question is how do I set the class of an R object when I only > have the > object name as a character string? > > Thanks in advance, > > Brian > > ______________________________________________ > 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.