asOneFormula: Combine Formulas of a Set of Objects
Description
The names of all variables used in the formulas extracted from the
objects defined in ... are converted into a single linear
formula, with the variables names separated by +.
Usage
asOneFormula(..., omit)
Value
a one-sided linear formula with all variables named in the formulas
extracted from the objects in ..., except the ones listed in
omit.
Arguments
...
objects, or lists of objects, from which a formula can be
extracted.
omit
an optional character vector with the names of variables to
be omitted from the returned formula. Defaults to c(".", "pi").