Re: [R] extracting one element from all list elements

2009-09-16 Thread Rainer M Krug
On Wed, Sep 16, 2009 at 1:35 PM, Henrique Dallazuanna wrote: > Try this: > > sapply(theList, '[[', 'A') > Thanks Henrique - that is much more elegant. Rainer > > On Wed, Sep 16, 2009 at 8:34 AM, Rainer M Krug wrote: > > Hi > > > > I have a list which cosists out of dataframes of the same str

Re: [R] extracting one element from all list elements

2009-09-16 Thread Henrique Dallazuanna
Try this: sapply(theList, '[[', 'A') On Wed, Sep 16, 2009 at 8:34 AM, Rainer M Krug wrote: > Hi > > I have a list which cosists out of dataframes of the same structure. Now I > want to extract one column (let's say column "A") from all dataframes and > have them in a matrix (or dataframe). > >

[R] extracting one element from all list elements

2009-09-16 Thread Rainer M Krug
Hi I have a list which cosists out of dataframes of the same structure. Now I want to extract one column (let's say column "A") from all dataframes and have them in a matrix (or dataframe). At the moment I am doiong: d <- data.frame(A=runif(100), B=rnorm(100)) theList <- list(e1=d, e2=d, e3=d, e