[R] effect plot

[John Fox]

Dear Ambrogi,


> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch 
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of 
> Ambrogi Federico
> Sent: Tuesday, December 19, 2006 12:03 PM
> To: r-help at stat.math.ethz.ch
> Subject: [R] effect plot
> 
> Dear R users,
> 
> Is there a simple way to use the effect function 
> (library(effects)) with a GEE estimated model?

Not that I'm aware. 

Sorry,
 John

> 
>  
> 
> library(gee)
> 
> library(MASS)
> 
> library(effects)
> 
> attach(epil)
> 
>  
> 
> b = gee(y ~ lbase*trt + lage + V4, family=poisson, id=subject,
> corstr="exchangeable")
> 
>  
> 
> plot(effect("lbase*trt", b))
> 
> # Errore in effect("lbase*trt", b) : nessun metodo 
> applicabile per "effect"
> 
>  
> 
>  
> 
> 
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> 
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