Jim, I tried str(yarn). I received the following output:
'data.frame': 28 obs. of 3 variables: $ NIR : num [1:28, 1:268] 3.07 3.07 3.08 3.08 3.10 ... ..- attr(*, "dimnames")=List of 2 .. ..$ : NULL .. ..$ : NULL $ density: num 100.0 80.2 79.5 60.8 60.0 ... $ train : logi TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE ... I think the important structure for my application is in the NIR line. Now that I "know" what the structure is, what does it mean, and how do I get my data into the same structure? Ross ******************************************************************* Ross Bricklemyer Dept. of Crop and Soil Sciences Washington State University 291D Johnson Hall PO Box 646420 Pullman, WA 99164-6420 Work: 509.335.3661 Cell/Home: 406.570.8576 Fax: 509.335.8674 Email: [EMAIL PROTECTED] -----Original Message----- From: jim holtman [mailto:[EMAIL PROTECTED] Sent: Tuesday, October 16, 2007 11:13 AM To: Bricklemyer, Ross S Cc: [EMAIL PROTECTED] Subject: Re: [R] data structure for plsr try: str(yarn) to see what the structure is. On 10/16/07, Bricklemyer, Ross S <[EMAIL PROTECTED]> wrote: > All, > > I am working with NIR spectral data and it was great to find that the example in ?plsr also used spectral data. Unfortunately, I am having difficulty figuring out how the "yarn" dataset is structured to allow for the plsr model to read: > > library(pls) > data(yard) > yarn.oscorespls <- mvr(density ~ NIR, 6, data = yarn, validation = "CV", method = "oscorespls") > > dim(yarn) > > yarn > > > Specifically, it is VERY convenient to be able to have the ~256 variables to be used in the model defined by NIR term. When I use dim(yarn) it claims [1] 28 3. When I call "yarn" there is WAY more data than 28 3. How does this work? I have 186 spectral bands to run in plsr and I would really like to be able to call them using NIR or something simlar. I have tried labeling my spectral data ASD.###, where ### is the wavelength, but I keep getting data.frame errors. > > Ross > > > > ******************************************************************* > Ross Bricklemyer > Dept. of Crop and Soil Sciences > Washington State University > 291D Johnson Hall > PO Box 646420 > Pullman, WA 99164-6420 > Work: 509.335.3661 > Cell/Home: 406.570.8576 > Fax: 509.335.8674 > Email: [EMAIL PROTECTED] > > > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem you are trying to solve? ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
