[R] Extracting a dataframe column as a dataframe

[Phil Spector]

> x['price']
   price
1 321.0
2 323.5

 					- Phil Spector
 					 Statistical Computing Facility
 					 Department of Statistics
 					 UC Berkeley
 					 spector at stat.berkeley.edu


On Sat, 25 Dec 2010, Dimitri Shvorob wrote:

>
>> x = structure(list(time = structure(c(1020232904.818, 1020232904.818
> ), class = c("POSIXt", "POSIXct"), tzone = ""), price = c(321,
> 323.5)), .Names = c("time", "price"), row.names = 1:2, class = "data.frame")
>> x1 = x[,c("price")]
>> dput(x1)
> c(321, 323.5)
>
> Is there similar syntax that gets "price" as a (single-column) dataframe? (I
> know that I can use "subset(... select = ...)")..
> Thank you.
> -- 
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