Re: [R] use list elements to subtract values from the dataframe

From: jim holtman <jholtman_at_gmail.com>
Date: Wed, 07 May 2008 05:40:00 -0400

What you want is:

wf[[fl[1]]]

'fl' is a vector, so you should only be using a single '[' for indexing.

On Wed, May 7, 2008 at 3:20 AM, Dirkheld <dirk.bollen_at_soc.kuleuven.be> wrote:
>
> Hi,
>
> I have a dataframe wf existing of a header with different labels and beneath
> the values of those labels :
> wf:
> label1 label2 ...
> 0,45 0,21
> 0,10 0,45
> .... ....
>
> I have a list
> fl <- c("label2","label3",..)
>
> Isn't possible to use the list elements in the list in order to subtract
> values from the dataframe? like :
> wf$fl[[1]]
> When I do in R I get :NULL
> fl[[1]] gives "label2" so no problem here...
>
> While wf$label1 works fine.
>
>
>
> --
> View this message in context: http://www.nabble.com/use-list-elements-to-subtract-values-from-the-dataframe-tp17098923p17098923.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help_at_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.
>

-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?

______________________________________________
R-help_at_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.
Received on Wed 07 May 2008 - 09:43:45 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Wed 07 May 2008 - 10:30:34 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive