ssr.control {assist} | R Documentation |

## Set Control Parameters for ‘ssr’

### Description

The values supplied in the function call replace the defaults and a list with all possible arguments is returned. The returned list is used as the ‘control’ argument to the ‘ssr’ function.

### Usage

```
ssr.control(job=-1, tol=0.0, init=0.0, theta, prec=1e-06,
maxit=30, tol.g=0.0, prec.g=1e-06, maxit.g=30)
```

### Arguments

`job` |
an integer representing the optimization method used to find the smoothing parameter.
The options are job=-1: golden-section search on (limnla(1), limnla(2));
job=0: golden-section search with interval specified automatically;
job >0: regular grid search on |

`tol` |
tolerance for truncation used in ‘dsidr’ or ‘dmudr’. Default is 0.0 which sets to square of machine precision. |

`init` |
init=0 means no initial values are provided for smoothing parameters theta; init=1 means initial values are provided for the theta. Default is 0. This option is only applicable to smoothing spline models with multiple smoothing parameters. |

`theta` |
If init=1, theta includes intial values for smoothing parameters. Default is NULL. This is only applicable to smoothing spline models with multiple smoothing parameters. |

`prec` |
precision requested for the minimum score value in ‘dmudr’, where precision is the weaker of the absolute and relative precisions. Default is 1e-06. This is only applicable to smoothing spline models with multiple smoothing parameters. |

`maxit` |
maximum number of iterations allowed in ‘dmudr’. Default is 30. This is only applicable to smoothing spline model with multiple smoothing parameters. |

`tol.g` |
the tolerance for elements of w's in GRKPK. Default is 0.0 which means using the machine precision. This is only applicable to generalized spline smoothing. |

`prec.g` |
precision for stopping the iteration in GRKPK. Default is 1e-06. This is only applicale to generalized spline smoothing. |

`maxit.g` |
maximum number of iterations allowed for the iteration in GRKPACK. Default is 30. This is only applicale to generalized spline smoothing. |

### Value

a list with components for each of the possible arguments.

### See Also

### Examples

```
## Not run:
# use regular grid seach method with 100 grid points
ssr.control(job=99)
## End(Not run)
```

*assist*version 3.1.9 Index]