[R] Obtaining the variable names of a glm object

[Phil Saunders]

Is names(model1$coef) what you're looking for?

-----Original Message-----
From: Kenneth Cabrera [mailto:krcabrer at epm.net.co] 
Sent: 29 November 2002 10:36
Cc: R-help at stat.math.ethz.ch
Subject: [R] Obtaining the variable names of a glm object



Hi, R users!
Suppose I make a model like this:

model1<-glm(resp~var1+var2+factor1+factor2+var1:factor1+var1:factor1+var2:factor2+var2:factor2,family=poisson) 


where "resp" is a response variable (poisson distributed) "var1" and "var2" are continuous variables and "factor1" and "factor2" are nominal variables (here I use them as 
dummy variable)
"factor1" has 2 levels (2 and 8)  and "factor2" 3 levels ( 1, 6 and 12). Now I want to obtain the labels of the coeficients of the model in 3 
separate columns and a
4th column with the corresponding value,

like this:

variable1       variable2      level       value
(intercept)                                  X
var1                                         X
var2                                         X
factor1                            8         X
factor2                            6         X 
factor2                           12         X 
var1                factor1        8         X
var1                factor2        6         X 
var1                factor2       12         X
var2                factor1        8         X
var2                factor2        6         X
var2                factor2       12         X

If I use:
model1$coef, I obtain the name of the coef, but joined.
I want them separated.

Thank you very much for your help!!!

-- 
Kenneth Roy Cabrera Torres



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