I am trying to modify aggregate.data.frame to create an aggregate method for
survey design objects. I am running into problems because survey design
objects are lists, with the variables and other design information stored in
separate dataframes, or objects of other classes, in this list. *Appl
On Wed, 15 Oct 2003 [EMAIL PROTECTED] wrote:
> I am trying to modify aggregate.data.frame to create an aggregate method for
> survey design objects. I am running into problems because survey design
> objects are lists, with the variables and other design information stored in
> separate dataframe
