parse_design {surveybootstrap} | R Documentation |
Parse a formula of the form
~ psu_v1 + psu_v2 + ... + strata(strata_v1 + strata_v2 + ...)
into a PSU formula and a strata formula.
parse_design(formula)
formula |
a formula describing the sample design (see Description of |
a list with entries psu.formula
and strata.formula