[R] find the data frames in list of objects and make a list of them

[Richard M. Heiberger]

I would do something like this

lsDataFrame <- function(xx=ls()) xx[sapply(xx, function(x)
is.data.frame(get(x)))]
ls("package:datasets")
lsDataFrame(ls("package:datasets"))

On Wed, Aug 13, 2014 at 2:56 PM, Matthew
<mccormack at molbio.mgh.harvard.edu> wrote:
> Hi everyone,
>
>    I would like the find which objects are data frames in all the objects I
> have created ( in other words in what you get when you type: ls()  ), then I
> would like to make a list of these data frames.
>
> Explained in other words; after typing ls(), you get the names of objects.
> Which objects are data frames ?  How to then make a list of these data
> frames.
>
>    A second question: is this the best way to make a list of data frames
> without having to manually type c(dataframe1, dataframe2, ...)  ?
>
> Matthew
>
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