From ripley at stats.ox.ac.uk  Thu Dec  6 18:15:10 2012
From: ripley at stats.ox.ac.uk (Prof Brian Ripley)
Date: Thu, 06 Dec 2012 17:15:10 +0000
Subject: [Rd] svd(X, LINPACK=TRUE) alters its input
In-Reply-To: <E66794E69CFDE04D9A70842786030B931B8C8C24@PA-MBX04.na.tibco.com>
References: <E66794E69CFDE04D9A70842786030B931B8C8C24@PA-MBX04.na.tibco.com>
Message-ID: <50C0D29E.1080008@stats.ox.ac.uk>

On 06/12/2012 15:32, William Dunlap wrote:
> Ordinary functions should not alter their inputs but in R-2.15.2
> svd(LINPACK=TRUE,X) does.  (It worked in 2.15.0 but not in 2.15.1
> or 2.15.2 and became deprecated in 2.15.2.)

But not in R-devel.  I'll backport the difference.

>
>> X <- matrix(c(1,2,3, 5,7,11, 13,17,19), 3, 3)
>> X
>       [,1] [,2] [,3]
> [1,]    1    5   13
> [2,]    2    7   17
> [3,]    3   11   19
>> svd(X, LINPACK=TRUE)$d
> [1] 31.9718214  2.3882717  0.3143114
> Warning message:
> In svd(X, LINPACK = TRUE) : LINPACK = TRUE is deprecated
>> X
>            [,1]        [,2]        [,3]
> [1,] 1.2672612 -13.8975846 -27.7951692
> [2,] 0.5345225   1.0945920   2.1072825
> [3,] 0.8017837   0.9955161  -0.9794695
>> version
>                 _
> platform       x86_64-w64-mingw32
> arch           x86_64
> os             mingw32
> system         x86_64, mingw32
> status
> major          2
> minor          15.2
> year           2012
> month          10
> day            26
> svn rev        61015
> language       R
> version.string R version 2.15.2 (2012-10-26)
> nickname       Trick or Treat
>> sessionInfo()
> R version 2.15.2 (2012-10-26)
> Platform: x86_64-w64-mingw32/x64 (64-bit)
>
> locale:
> [1] LC_COLLATE=English_United States.1252
> [2] LC_CTYPE=English_United States.1252
> [3] LC_MONETARY=English_United States.1252
> [4] LC_NUMERIC=C
> [5] LC_TIME=English_United States.1252
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> Bill Dunlap
> Spotfire, TIBCO Software
> wdunlap tibco.com
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>


-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595



[Rd] svd(X, LINPACK=TRUE) alters its input
Prof Brian Ripley