Get model matrix — getX • FLa4a

Uses the user-specified formula to build a model matrix.

getX(object, ...)

# S4 method for class 'formula'
getX(object, df, newdf = df, tol = 1e-04)

Arguments

object: object of relevant class (see signature of method)
...: additional argument list that might never be used
df: the data.frame to build the model matrix against.
newdf: the data.frame to create the model matrix for.

Value

a matrix.

Note

getX is intended to be used internally