R help - Apr 2007 - R News, volume 7, issue 1 is now available --error in AMMI article

Hi,

In this newsletter (Vol 7, 1),the article on AMMI by Onofri and Ciriofolo
presented a AMMI function.  One of arguments for this function AMMI (Page
17) is biplot. There is a biplot fucntion from  {stats} package.  I guess
they are not the same. Could the authors clarify that?

Thanks,

Yuandan

	[[alternative HTML version deleted]]

Dear Yuandan,

My attention was drawn by your claim of an "error in AMMI article."

As you say, the code for the AMMI function is given directly in the article.
If the argument biplot is equal to 1, then a biplot is drawn by the
function, as is apparent from the section of code labelled "## 5 -
Biplots."

Why is this an error?

Regards,
 John

--------------------------------
John Fox, Professor
Department of Sociology
McMaster University
Hamilton, Ontario
Canada L8S 4M4
905-525-9140x23604
http://socserv.mcmaster.ca/jfox 
-------------------------------- 
> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch 
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Lux Zhang
> Sent: Thursday, April 26, 2007 1:38 AM
> To: R-help; r-anounce at stat.math.ethz.ch
> Subject: Re: [R] R News, volume 7,issue 1 is now available 
> --error in AMMI article
> 
> Hi,
> 
> In this newsletter (Vol 7, 1),the article on AMMI by Onofri 
> and Ciriofolo presented a AMMI function.  One of arguments 
> for this function AMMI (Page
> 17) is biplot. There is a biplot fucntion from  {stats} 
> package.  I guess they are not the same. Could the authors 
> clarify that?
> 
> Thanks,
> 
> Yuandan
> 
> 	[[alternative HTML version deleted]]
> 
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