get unit type from grid graphics unit

Question

In R and the grid package, is there a way to extract the unit type of a unit?

E.g.:

x <- unit(1,'inches')

Is there a function that does:

unittype(x) # returns 'inches'

(Well, I'm sure there is - but what is it?)

cheers.

Answer 1

I tend to use attr(x,"unit") but I'm honestly not sure if there is a more pithy function for this.