ag.ds.createfactor: create and combines factor vectors.
In datashield/ag.dev.cl: ag.dev.cl

Description Usage Arguments Value Author(s) Examples

This function calls a server function that generates factor vectors. If the generated factor is not valid (i.e. if any of the categories has a count > 0 and < 5) its values are replaced by missing values.

1 2	ag.ds.createfactor(opals = NULL, xvect = NULL, newvarname = NULL)

`opals`	a list of opal object(s) obtained after login in to opal servers; these objects hold also the data assign to R, as `dataframe`, from opal datasources.
`xvect`	a numeric of character vector.
`newvarname`	name of the variable to assigned the created factor to.

a list of factor vectors or one factor vector.

Gaye, A.

{

# load the login data
data(logindata)

# login and assign specific variable(s)
myvar <- list("GENDER")
opals <- ag.ds.login(logins=logindata,assign=TRUE,variables=myvar)

# create a factor vector of the variable 'GENDER', one for each study
ag.ds.createfactor(opals=opals, "sex", xvect=quote(D$GENDER))
}