[R] Selecting data frame components by name - do you know a shorter way?
Chuck Cleland
ccleland at optonline.net
Fri Jan 20 19:02:28 CET 2006
?subset
subset(dframe, select=c("name1", "name2", "name3"))
Michael Reinecke wrote:
> Hi! I suspect there must be an easy way to access components of a data frame by name, i.e. the input should look like "name1 name2 name3 ..." and the output be a data frame of those components with the corresponding names. I ´ve been trying for hours, but only found the long way to do it (which is not feasible, since I have lots of components to select):
>
>
>
> dframe[names(dframe)=="name1" | dframe=="name2" | dframe=="name3"]
>
>
>
> Do you know a shortcut?
>
>
>
> Michael
>
>
> [[alternative HTML version deleted]]
>
>
>
> ------------------------------------------------------------------------
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
--
Chuck Cleland, Ph.D.
NDRI, Inc.
71 West 23rd Street, 8th floor
New York, NY 10010
tel: (212) 845-4495 (Tu, Th)
tel: (732) 452-1424 (M, W, F)
fax: (917) 438-0894
More information about the R-help
mailing list