From wolski at molgen.mpg.de  Wed Sep 29 19:25:06 2004
From: wolski at molgen.mpg.de (Witold Eryk Wolski)
Date: Wed Sep 29 19:25:13 2004
Subject: [Rd] Ordering of values returned by unique
In-Reply-To: <cjeogs$hjh$1@sea.gmane.org>
References: <415AD222.4050908@molgen.mpg.de>	<6.1.0.6.2.20040929094231.05e42a00@mailhost.blackmesacapital.com>
	<cjeogs$hjh$1@sea.gmane.org>
Message-ID: <415AEFF2.5070501@molgen.mpg.de>

Hi,

If you go to the frame on www.r-project.org -> documentation -> publication
and search for "blue book" "green book" you will find that this refers to
two books :
/"The New S Language"
//"Programming with Data"
respectively
/
Mass refers to "/Modern Applied Statistics with S"/
/E

Earl F. Glynn wrote:

>"Tony Plate" <tplate@blackmesacapital.com> wrote in message
>news:6.1.0.6.2.20040929094231.05e42a00@mailhost.blackmesacapital.com...
>  
>
>>I depend on this all the time, so I also checked some references.  In the
>>Blue book the documentation for the functions unique and duplicated is
>>combined and implies the above.  In MASS 4th Ed, the page referred to by
>>the index entry for 'unique' (p48, #9 in my copy) states that 'unique'
>>removes duplicates as identified by 'duplicated', which implies that the
>>order of retained elements is not changed.  The Green book has no index
>>entry for 'unique'.  In S-plus the implementation of unique.default(x)
>>    
>>
>uses
>  
>
>>x[!duplicated(x)].
>>    
>>
>
>So what is the "Blue book", the "Green book", and MASS 4th Ed?
>
>efg
>
>______________________________________________
>R-devel@stat.math.ethz.ch mailing list
>https://stat.ethz.ch/mailman/listinfo/r-devel
>
>  
>


-- 
Dipl. bio-chem. Witold Eryk Wolski         
MPI-Moleculare Genetic
Ihnestrasse 63-73 14195 Berlin           _
tel: 0049-30-83875219                   'v'
http://www.molgen.mpg.de/~wolski       /   \
mail: witek96@users.sourceforge.net  ---W-W----
      wolski@molgen.mpg.de


[Rd] Ordering of values returned by unique
Witold Eryk Wolski