R: Convert to One-Sided Formula

asOneSidedFormula {nls} | R Documentation

## Convert to One-Sided Formula

### Description

Names, expressions, numeric values, and character 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)

### Arguments

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

### Value

a one-sided formula representing `object`

### Author(s)

Jose Pinheiro and Douglas Bates

### See Also

`formula`

### Examples

    asOneSidedFormula("age")
    asOneSidedFormula(~ age)

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