R: toggle the sign of an expression

toggle.sign {formula.tools} | R Documentation

## toggle the sign of an expression

### Description

toggle the sign of an expression

### Usage

    toggle.sign(x)

### Arguments

`x` | expression

### Details

'toggle.sign' changes the sign of an expression for '+' tp '-' and visa-versa.

### Examples

      toggle.sign(1:3)
      toggle.sign( quote(a) )
      toggle.sign( quote(-a) )

      exp <- expression( a, -b, -(a-b) )
      toggle.sign(exp)

[Package formula.tools version 1.7.1 Index]