| Strata-class {simFrame} | R Documentation |
Class containing strata information for a data set.
Objects can be created by calls of the form new("Strata", ...) or
Strata(...).
values:"integer" giving the stratum
number for each observation.split:"list"; each list element
contains the indices of the observations belonging to the corresponding
stratum.design:"character" giving the
variables (columns) defining the strata.nr:"integer" giving the stratum
numbers.legend:"data.frame" describing the
strata.size:"numeric" giving the stratum
sizes.call:"OptCall"; the function call
used to stratify the data, or NULL.signature(x = "data.frame", design = "Strata",
fun = "function"): apply a function to subsets.signature(x = "data.frame", design = "Strata",
fun = "function"): apply a function to subsets.Andreas Alfons, alfons@statistik.tuwien.ac.at
showClass("Strata")