From Achim.Zeileis at wu-wien.ac.at  Fri Apr  7 19:48:51 2006
From: Achim.Zeileis at wu-wien.ac.at (Achim Zeileis)
Date: Fri, 7 Apr 2006 19:48:51 +0200
Subject: [Rd] rownames for as.matrix.zoo
In-Reply-To: <A77412E534FCD248A93A81F37CC75B7A033F8D19@waxbill.africa.nedcor.net>
References: <A77412E534FCD248A93A81F37CC75B7A033F8D19@waxbill.africa.nedcor.net>
Message-ID: <20060407194851.494711e1.Achim.Zeileis@wu-wien.ac.at>

On Fri, 7 Apr 2006 16:09:53 +0200  Brandt, T. (Tobias) wrote:

> Hi
>  
> Is there a reason why as.matrix.zoo doesn't set the rownames to the
> index like as.data.frame.zoo does?

Yes, oversight, I think ;-)

Added to the devel-version of zoo. I'll try to get it out to CRAN in
the next days.
Z

> Thanks
>  
> Tobias
>  
>  
> > library(zoo)
> > x.Date <- as.Date("2003-02-01") + c(1, 3, 7, 9, 14) - 1
> > x <- zoo(matrix(1:10, nc=2), x.Date)
> > colnames(x) <- c('A','B')
> > print(x)
>            A  B 
> 2003-02-01  1  6
> 2003-02-03  2  7
> 2003-02-07  3  8
> 2003-02-09  4  9
> 2003-02-14  5 10
> > as.data.frame(x)
>            A  B
> 2003-02-01 1  6
> 2003-02-03 2  7
> 2003-02-07 3  8
> 2003-02-09 4  9
> 2003-02-14 5 10
> > as.matrix(x)
>      A  B
> [1,] 1  6
> [2,] 2  7
> [3,] 3  8
> [4,] 4  9
> [5,] 5 10
> > R.version
>          _              
> platform i386-pc-mingw32
> arch     i386           
> os       mingw32        
> system   i386, mingw32  
> status                  
> major    2              
> minor    2.0            
> year     2005           
> month    10             
> day      06             
> svn rev  35749          
> language R              
> > library(help=zoo)
> > 
>                 Information on package 'zoo'
>  
> Description:
>  
> Package:       zoo
> Version:       1.0-2
> Date:          2005-09-07
> Title:         Z's ordered observations
> Author:        Achim Zeileis, Gabor Grothendieck
> Maintainer:    Achim Zeileis <Achim.Zeileis at R-project.org
> <mailto:Achim.Zeileis at R-project.org> >
> Description:   An S3 class with methods for totally ordered indexed
> observations. It is particularly
>                aimed at irregular time series of numeric
> vectors/matrices and factors. zoo's key
>                design goals are independence of a particular
> index/date/time class and consistency
>                with with ts and base R by providing methods to extend
> standard generics.
> Depends:       R (>= 2.1.0)
> Suggests:      chron, fCalendar, its, tseries, strucchange, DAAG
> License:       GPL
> Packaged:      Thu Sep 8 13:07:59 2005; zeileis
> Built:         R 2.1.1; ; 2005-09-09 12:21:08; windows
>  
>  
> 
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[Rd] rownames for as.matrix.zoo
Achim Zeileis