Combine Formulas of a Set of Objects

Usage

asOneFormula(..., 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").

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 +.

Value

a one-sided linear formula with all variables named in the formulas extracted from the objects in ..., except the ones listed in omit.

Author(s)

Jose Pinheiro and Douglas Bates

See Also

formula, all.vars

Examples

library(lme)
asOneFormula(y ~ x + z | g, list(~ w, ~ t * sin(2 * pi)))

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