[R] Measurement units inside a data frame

[Gavin Simpson]

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On Thu, 2008-02-07 at 19:32 +0900, Tribo Laboy wrote:
> Hello,
> 
> I was wondering if there was an easy way to put information about the
> measurement units used for each column of a data frame ...
> 
> Thanks for any pointers,
> 
> TL

You could add attributes:

dummy <- data.frame(x = rnorm(10), y = rbeta(10, 2, 5), z = rlnorm(10))
dummy

attr(dummy, "units") <- c("m s-2", "Kg", "m")
dummy
attributes(dummy)

G
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