[R] Error creating named character vectors from column names in data frame.

Bert Gunter bgunter.4567 at gmail.com
Fri Oct 7 19:34:21 CEST 2016

I think you have R semantics confused. What do you think

c("a" = "b")


Note that:

> c("a" = "b")
> a
Error: object 'a' not found

And of course:

class("a") # character
class("b") # character

but this has *nothing* to do with the line immediately above it.

Have you gone through any  basic R tutorials? There are many good ones
on the web.


Bert Gunter

"The trouble with having an open mind is that people keep coming along
and sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )

On Fri, Oct 7, 2016 at 9:06 AM, Jorge Cimentada <cimentadaj at gmail.com> wrote:
> Hi everyone,
> I was hoping someone would explain why this doesn't work.
> c("a" = "b") # named character vector
> class("a") # character
> class("b") # character
> c(names(mtcars)[1] = names(mtcars[2]) # error
> class(names(mtcars)[1]) # character
> class(names(mtcars)[2]) # character
> Thanks,
> Jorge Cimentada
>         [[alternative HTML version deleted]]
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> 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.

More information about the R-help mailing list