[R] Selecting data frame components by name - do you know a s horter way?

[Liaw, Andy]

Try:

dframe[c("name1", "name2", "name3")]

This works because a data frame is a list, with each variable the component
of the list (and corresponding name), so you can subset it (by variables,
not rows) like a list.

Andy

> From: Michael Reinecke
> 
> 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
> 
> 
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