drop.specials: Remove Special Terms from a Formula
Description
Removes terms such as strata() or cluster() from a
formula/terms object.
Usage
drop.specials(x, components, ...)
Value
The updated formula with an attribute "variables" containing
the extracted variable names from removed specials.
Arguments
- x
a formula object.
- components
character vector of special term names to remove.
- ...
additional arguments passed to lava::Specials.