Convert to One-Sided Formula

DESCRIPTION:

Names, expressions, and strings are converted to one-sided formulas. If object is a formula, it must be one-sided, in which case it is returned unaltered.

USAGE:

asOneSidedFormula(object) 

REQUIRED ARGUMENTS:

object
a one-sided formula, an expression, a numeric value, or a character string.

VALUE:

a one-sided formula representing object

SEE ALSO:

EXAMPLES:

asOneSidedFormula("age") 
asOneSidedFormula(~ age)