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
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