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2011 Oct 03
3
Best method to add unit information to dataframe ?
Dear all, I'd like to have a dataframe store information about the units of the data it contains. You'll find below a minimal exemple of the way I do, so far. I add a "units" attribute to the dataframe. But I dont' like the long syntax needed to access to the unit of a given variable (namely, something like : var_unit <- attr(my_frame,