asOneSidedFormula
Convert to One-Sided Formula

### Description

Create a formula with no left hand side (only predictors, no response).

### Usage

    asOneSidedFormula(object, env = parent.frame())

### Arguments

object | A formula, call, character string, name, or number.

Value
If object is a formula (the usual case) return it if it has no left hand side but stop if it does. If it is a call to ~ convert it to a formula object and treat it as above.
Otherwise, if object is a name or expression return a formula with object on the right hand side. If object is a character string, convert to a name object and treat it as above.
See Also
formula
Examples

    asOneSidedFormula( ~ p1 + p2)
    asOneSidedFormula("p1")

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