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]]
>
> ______________________________________________
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> PLEASE do read the posting guide 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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