Hi Barry,
I looked at the source code for pls quickly and couldn't find where/why
this message is being printed. Maybe an undocumented behavior? I would ask
the package maintainer. It doesn't look like a warning - just that there
was no variable selection.
HTH,
Stephen
On Wed, May 27, 2015 at 8:03 AM, Barry King <barry.k...@qlx.com> wrote:
> I am attempting to use mixOmics' pls() on a problem with 16 rows
> and 27 columns. When I run pls I get the message "No variable selection."
> I have included a small problem below that produces this message.
> What am I doing wrong? Any help is appreciated.
>
>
> #===== Begin small reproducible sample program =====
> library(mixOmics)
>
> X <- matrix(c(2766, 2610, 3306, 3630,
> 1492, 1419, 1369, 1158,
> 2450, 2379, 2400, 2055,
> 2751, 2883, 3492, 3570,
> 2652, 2691, 3225, 3285,
> 3993, 4722, 6147, 6720,
> 4032, 4350, 5430, 5763,
> 4530, 5190, 6910, 7580,
> 4077, 4410, 5460, 5857,
> 3450, 3432, 3969, 4020,
> 4989, 5301, 6807, 7425,
> 5340, 5790, 7590, 8390,
> 3162, 3477, 4365, 4650,
> 4380, 4695, 6018, 6510,
> 4587, 4200, 5040, 5289,
> 4017, 4725, 6090, 6570),
> ncol=4)
> colnames(X) <- c("v1","v2","v3","v4")
>
> Y <- matrix(c( 3.0110,
> 0.0000,
> 0.0000,
> 1.4820,
> 1.1160,
> 3.3970,
> 2.4280,
> 4.0240,
> 2.2750,
> 0.9588,
> 3.1900,
> 4.1320,
> 2.1600,
> 3.0940,
> 1.6040,
> 3.1620),
> ncol=1)
> colnames(Y) <- c("y")
>
> mpls <- pls(X, Y, mode="regression", ncomp=2)
> mpls
>
> #===== End small reproducible sample program, begin console output =====
>
> Call:
> pls(X = X, Y = Y, mode = "regression")
>
> PLS with a 'regression' mode with 2 PLS components.
> You entered data X of dimensions: 16 4
> You entered data Y of dimensions: 16 1
>
> No variable selection.
>
> Available components:
> --------------------
> loading vectors: see object$loadings
> variates: see object$variates
> variable names: see object$names
>
> #===== End console output =====
>
> Barry King
> Associate Professor of Information Technology
> Butler University
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
--
Stephen Sefick
**************************************************
Auburn University
Biological Sciences
331 Funchess Hall
Auburn, Alabama
36849
**************************************************
sas0...@auburn.edu
http://www.auburn.edu/~sas0025
**************************************************
Let's not spend our time and resources thinking about things that are so
little or so large that all they really do for us is puff us up and make us
feel like gods. We are mammals, and have not exhausted the annoying little
problems of being mammals.
-K. Mullis
"A big computer, a complex algorithm and a long time does not equal
science."
-Robert Gentleman
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