Methods to extract strata information from an object.
Here we only define a method for class
1 2 3 4
an object of class
further arguments passed to methods.
an integer (strata dimension) or
a character vector of strata names of length
sts: Extract the names of the units, i.e., the
from a multivariate
If the units result from the interaction of multiple strata
separated by dots, e.g.,
the function can also extract the names corresponding to a specific
strata dimension, e.g.,
which = 2 to get the group names.
1 2 3
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.