Thanks! This helps a lot!
On Mon, Sep 13, 2010 at 4:35 PM, Joshua Wiley <jwiley.ps...@gmail.com>wrote:
> Hi,
>
> Just to provide an example:
>
>
> #Sample data copied to variables "X", "Y", and "Z"
> Z <- Y <- X <- data.frame(A = 1:10)
>
> # A variable holding the names of the variables
> datasetname <- c("X", "Y", "Z")
>
> # Use mget() to collect all the variables in a list
> # get() only gets one variable at a t ime, mget() gets multiple
> # however, mget() needs to know which environment to look in
> # If your variables are just in your usual workspace
> # it should be .GlobalEnv
> alldata <- mget(x = datasetname, envir = .GlobalEnv)
>
> HTH,
>
> Josh
>
>
> On Mon, Sep 13, 2010 at 11:40 AM, Jie Li <ruser...@gmail.com> wrote:
> > All,
> >
> > For example, I have a dataset named "ABC" loaded into R
> >> ABC
> > [,1] [,2] [,3]
> > [1,] 1 4 7
> > [2,] 2 5 8
> > [3,] 3 6 9
> >
> > and I also have a variable datasetname
> >> datasetname
> > [1] "ABC"
> >
> > and I want to add this "ABC" dataset to an existing list "alldata"
> >
> > > alldata <-NULL
> >> alldata <- as.list(alldata)
> >
> > since I will have lots of datasets like "ABC" loaded to R, and have
> > datasetname variable record their names, I want to add all the datasets
> to
> > the list alldata by just writing one command. But I don't know to tell R
> > that "ABC" is a dataset's name instead of a value of variable
> datasetname?
> > Thank you all for your help!
> >
> > JL
> >
> > [[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<http://www.r-project.org/posting-guide.html>
> > and provide commented, minimal, self-contained, reproducible code.
> >
>
>
>
> --
> Joshua Wiley
> Ph.D. Student, Health Psychology
> University of California, Los Angeles
> http://www.joshuawiley.com/
>
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