lmdiags {DAAG} | R Documentation |

## Return data required for diagnostic plots

### Description

This extracts the code that provides the major part of the statistical information used by plot.lm, leaving out the code used to provide the graphs

### Usage

```
lmdiags(x, which = c(1L:3L, 5L), cook.levels = c(0.5, 1), hii=NULL)
```

### Arguments

`x` |
This must be an object of class |

`which` |
a subset of the numbers '1:6', indicating the plots for which statistical information is required |

`cook.levels` |
Levels for contours of |

`hii` |
Diagonal elements for the hat matrix. If not supplied
( |

### Details

See `plot.lm`

for additional information.

### Value

`yh` |
fitted values |

`rs` |
standardized residuals (for |

`yhn0` |
As |

`cook` |
Cook's statistics |

`rsp` |
standardized residuals (for |

### Note

This function is designed, in the first place, for use in connection
with `plotSimDiags`

, used to give simulations of
diagnostic plots for `lm`

objects.

### Author(s)

John Maindonald, using code that John Maindonald, Martin Maechler and
others had contributed to `plot.lm`

### References

See references for `plot.lm`

### See Also

### Examples

```
women.lm <- lm(weight ~ height, data=women)
veclist <- lmdiags(x=women.lm)
## Returns the statistics that are required for graphs 1, 2, 3, and 5
```

*DAAG*version 1.25.6 Index]