[R] Deleting many columns of a data frame with the same name in a row

[Uwe Ligges]

datas[ , "A" != colnames(datas)]

Uwe Ligges

On 02.02.2010 17:35, anna wrote:
>
> Hi, I have a data frame datas with half of the columns with the same name
> "A". I want to delete all those columns from the data frame so here is what
> I did:
> datas$A<- NULL
> The problem is that it deleted only one column, I would have to do it as
> many times as there are "A" columns. Is there a way to do it in one time?
> thank you
>
> -----
> Anna Lippel