GLM

-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch 
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Jeff Row
Sent: Monday, October 31, 2005 12:01 PM
To: r-help at stat.math.ethz.ch
Subject: [R] GLM

Hello R-users,

I am a relatively new user of R and I have a question 
regarding glm. I want to run the function GLM on multiple 
individuals separately and then get means for summary 
statistics such as AIC and coef. Is there a way to do this in 
R without separately going through each individual and 
subsetting the dataset, getting the summary statistics and 
averaging them? For example, in the dataset below I would 
like to run the function:

glm(Type~Dwater+Habitat, data=example, family=binomial())

on each individual separately and then get the average for 
the coef's Dwater and Habitat for the 3 individuals.

example

   Individual Type Dwater Habitat
1           1    0     40       0
2           1    1     80       1
3           1    0     30       0
4           1    1     90       0
5           2    0     15       1
6           2    1     95       1
7           2    0     20       0
8           2    1     75       1
9           3    0     15       0
10          3    1     60       1
11          3    0     10       1
12          3    1     95       0

Thanks,

Jeff.