XploRe Help : glmlink

Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Library:	glm
See also:	glmcore glmstat glmout glminvlink

Quantlet:		glmlink
Description:		glmlink computes the link function.

Link:

Tutorial: GLM in XploRe

Usage:	`mu = glmlink(code,eta{,opt})`
Input:
	`code`	text string, the short code for the model (e.g. "bilo" for logit or "noid" for ordinary PLM).
	`eta`	n x d matrix, the index values.
	`opt`	optional, a list with optional input. "glmopt" can be used to set up this parameter.
	`opt.pow`	optional, power for power link. If not given, set to 0 (logarithm).
	`opt.nbk`	scalar, extra parameter k for negative binomial distribution. If not given, set to 1 (geometric distribution).
Output:
	`mu`	n x d matrix, the link function applied to eta.

Example:

library("glm") eta=2 mu=glmlink("bilo",eta) mu

Result:

The logistic link for the logit model is computed at eta=2:
Contents of mu
[1,]   0.8808

Author: M. Mueller, 20010228