R: Calculates the Leverages for a GLM through a C Routine

gethats {brglm} | R Documentation

## Calculates the Leverages for a GLM through a C Routine

### Description

Calculates the leverages of a GLM through a C routine. It is intended to be used only within `brglm.fit`.

### Usage

    gethats(nobs, nvars, x.t, XWXinv, ww)

### Arguments

`nobs` | The number of observations, i.e. `dim(X)[1]`.
`nvars` | The number of parameters, i.e. `dim(X)[1]`, where `X` is the model matrix, excluding the columns that correspond to aliased parameters.
`x.t` | `t(X)`.
`XWXinv` | The inverse of the Fisher information.
`ww` | The ‘working’ weights.

### Value

A vector containing the diagonal elements of the hat matrix.

### Author(s)

Ioannis Kosmidis, i.kosmidis@ucl.ac.uk

### See Also

`hatvalues`, `brglm.fit`

[Package brglm version 0.5-9 Index]