[R] question about dataframe ("sensory") in PLS package

Andris Jankevics andza at osi.lv
Tue Aug 1 09:15:50 CEST 2006

Hello, I do this in such way:

DATAX <- matrix(seq(1,6,1),2,3)
DATAY <- matrix (seq(1,4,1),2,2)
rownames(DATAX) <- c("s1","s2")
rownames(DATAY) <- c("s1","s2")
colnames (DATAX) <- c("v1","v2","v3")
colnames (DATAY) <- c("respone_1","response_2")
KAL <- data.frame (N = rownames(DATAX))

DATAX is a matrix of testing data, but DATAY is a matrix of responses.

Andris Jankevics

On Pirmdiena, 31. Jūlijs 2006 05:45, jz7 at duke.edu wrote:
> Dear all,
> I am trying to my dataframe for the PLS analysis using the PLS package.
> However I have some trouble generating the correct dataframe. The main
> problem is how to use one name to represent several columns in the
> dataframe.
> The example dataframe in PLS package is called "sensory". I cannot
> directly read the data file since it's a binary file. If I use
> "names(sensory)" command, I will get two names: "Quality" and "Panel". But
> if I use "summary(sensory)" command, I will get information of five
> columns for "Quality" and 6 columns for "Panel" (such as "Quality.Acidity"
> "Quality.Peroxide"...). So when I use PLS regression, the function is
> simply "Panel ~ Quality" (but it's actually multiple regression).
> Does anyone know how to build such dataframe? Please share some
> experience. Really appreciate the help!
> Sincerely,
> Jeny
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