R help - Mar 2012 - PLS Error message

Hi,
I work with hyperspectral remote sensing data and I try to built a pls 
model with this data. I already built the model but if I try to 
calculate the RMSEP and R2 with a test data set I get the following 
error message:

Error: variable 'subX' was fitted with type "nmatrix.501" but
type
"nmatrix.73" was supplied

The problem is that I don't get the message for the pls models. Thank 
you very much for your help.

/Thomas

-- 
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Thomas Möckel, PhD student

Department of Earth and Ecosystem Science
Lund University
Sölvegatan 12
SE-223 62 Lund
Sweden

Tel:+46 (0)46 - 222 4887
E-mail: Thomas.Mockel@nateko.lu.se


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Thomas M?ckel <thomas.mockel at nateko.lu.se> writes:
> I work with hyperspectral remote sensing data and I try to built a pls 
> model with this data. I already built the model but if I try to 
> calculate the RMSEP and R2 with a test data set I get the following 
> error message:
>
> Error: variable 'subX' was fitted with type "nmatrix.501"
but type
> "nmatrix.73" was supplied
Since you don't show what commands you used, this is guesswork, but my
guess is that you used

yourmodel <- plsr(yourresponse ~ subX, data = yourdata)
R2(yourmodel, newdata = yournewdata)

and that yourdata$subX contains 501 coloumns, but yournewdata$subX only
contains 73 coloumns.  You must supply a newdata with the same number of
coloumns as in the modelling data.

-- 
Regards,
Bj?rn-Helge Mevik