[R] R News, volume 7, issue 1 is now available --error in AMMI article

John Fox jfox at mcmaster.ca
Thu Apr 26 12:37:11 CEST 2007

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?


John Fox, Professor
Department of Sociology
McMaster University
Hamilton, Ontario
Canada L8S 4M4

> -----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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