[R] Variables from a Dataframe
wdunlap at tibco.com
Mon Dec 12 21:33:45 CET 2011
I would recommend using data.frame(var1, var2, ...)
and not cbind.data.frame(var1, var2, ...). I consider
it bad form to directly call a method of a generic function.
Sometimes it leads to errors, as a method should be
free to assume that its inputs are of the class it
was declared to accept. In the particular case of
cbind.data.frame, I think it just calls data.frame.
Spotfire, TIBCO Software
> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Sarah Goslee
> Sent: Monday, December 12, 2011 11:50 AM
> To: Jose Bustos Melo
> Cc: r-help at r-project.org
> Subject: Re: [R] Variables from a Dataframe
> Without a reproducible example it's impossible to say for certain,
> but I'd try
> cbind.data.frame() instead of cbind().
> You need to have a data frame, not a matrix, for the result.
> On Mon, Dec 12, 2011 at 2:44 PM, Jose Bustos Melo <jbustosmelo at yahoo.es> wrote:
> > Hello everyone,
> > I want make a variable selection from a dataframe, but when I build this new object (using cbind)
> the new table (which is a matrix) I lost all the original factor names in the variables. I get
> > Someone would be so kind and tell me if there's is a ny way to get variables in a dataframe, but not
> changing these factor to numbers?
> > Thank you all.
> > José
> Sarah Goslee
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
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