Please don't post in HTML format... it messes with code examples.
Use character indexing (please read the Introduction to R... again if
necessary).
myf <- function(df, colname){
df[ ,colname ]
}
colname <- "a"
myf(m,colname)
Until you learn simple R syntax, I strongly recommend avoiding writing tricky
code that plays with names of variables.
---------------------------------------------------------------------------
Jeff Newmiller The ..... ..... Go Live...
DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go...
Live: OO#.. Dead: OO#.. Playing
Research Engineer (Solar/Batteries O.O#. #.O#. with
/Software/Embedded Controllers) .OO#. .OO#. rocks...1k
---------------------------------------------------------------------------
Sent from my phone. Please excuse my brevity.
song song <rprojecth...@gmail.com> wrote:
>for example I have data frame m as below:
>
>m=as.data.frame(outer(1:5,6:9))
>colnames(m)=c('a','b','c','d')
>
>and I define the function
>
>myf=function(df, colname){
>
> suppose colname is a, then:
> how can I get the column 'a'
> and how to get the colname as a string, 'a'
>
>}
>
>Thank you!
>
> [[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
>and provide commented, minimal, self-contained, reproducible code.
______________________________________________
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
and provide commented, minimal, self-contained, reproducible code.
