formula.nls {stats} | R Documentation |

## Extract Model Formula from `nls`

Object

### Description

Returns the model used to fit `object`

.

### Usage

```
## S3 method for class 'nls'
formula(x, ...)
```

### Arguments

`x` |
an object inheriting from class |

`...` |
further arguments passed to or from other methods. |

### Value

a formula representing the model used to obtain `object`

.

### Author(s)

JosÃ© Pinheiro and Douglas Bates

### See Also

### Examples

```
fm1 <- nls(circumference ~ A/(1+exp((B-age)/C)), Orange,
start = list(A = 160, B = 700, C = 350))
formula(fm1)
```

[Package

*stats*version 4.4.0 Index]