I have an exercise. With 3 kinds of yohourt a,b,c. There are 25 participatients estimate 3 norms: taste (va,vb,vc), structure (ca,cb,cc) and price (ga,gb,gc) and give the mark from 1 to 5. I don't know how to PCA this data. Please help me! I attached the data file follow: Va Vb Vc Ca Cb Cc Ga Gb Gc 4 2 4 5 5 5 4 4 2 2 2 4 3 2 5 4 5 1 2 2 1 2 3 3 3 1 4 1 1 2 2 3 3 4 3 2 3 4 4 4 3 1 2 1 2 1 1 1 1 2 4 3 2 4 4 4 2 2 2 1 2 1 3 2 3 3 3 4 3 1 1 1 4 5 1 3 3 2 4 2 4 2 2 5 1 1 3 2 3 3 4 2 4 5 3 3 4 4 4 3 4 2 1 2 2 1 2 4 1 2 1 2 3 3 3 1 4 3 4 1 1 2 1 2 3 3 5 4 3 4 3 1 1 1 2 4 4 2 2 2 1 4 2 4 2 2 1 1 2 4 3 2 4 3 1 3 4 2 5 3 4 1 1 1 2 2 3 3 4 3 2 2 3 4 3 4 4 4 3 1 2 3 3 3 4 3 1 1 1 4 3 1 1 1 2 2 3 3 1 1 1 1 2 4 3 2 4 3 4 2 1 2 2 3 1 3 3 4 2 1 2 2 1 2 4 -- View this message in context: http://www.nabble.com/Problem-with-PCA-tp15797095p15797095.html Sent from the R help mailing list archive at Nabble.com.
This is a homework problem. I know how to do a PCA, you need to learn. I suggest you visit your textbook, then check the documentation for R's various PCA implementations to work out how to effect the analysis. phthao05 wrote:> I have an exercise. With 3 kinds of yohourt a,b,c. There are 25 > participatients estimate 3 norms: taste (va,vb,vc), structure (ca,cb,cc) and > price (ga,gb,gc) and give the mark from 1 to 5. I don't know how to PCA this > data. Please help me! > I attached the data file follow: > Va Vb Vc Ca Cb Cc Ga Gb Gc > 4 2 4 5 5 5 4 4 2 > 2 2 4 3 2 5 4 5 1 > 2 2 1 2 3 3 3 1 4 > 1 1 2 2 3 3 4 3 2 > 3 4 4 4 3 1 2 1 2 > 1 1 1 1 2 4 3 2 4 > 4 4 2 2 2 1 2 1 3 > 2 3 3 3 4 3 1 1 1 > 4 5 1 3 3 2 4 2 4 > 2 2 5 1 1 3 2 3 3 > 4 2 4 5 3 3 4 4 4 > 3 4 2 1 2 2 1 2 4 > 1 2 1 2 3 3 3 1 4 > 3 4 1 1 2 1 2 3 3 > 5 4 3 4 3 1 1 1 2 > 4 4 2 2 2 1 4 2 4 > 2 2 1 1 2 4 3 2 4 > 3 1 3 4 2 5 3 4 1 > 1 1 2 2 3 3 4 3 2 > 2 3 4 3 4 4 4 3 1 > 2 3 3 3 4 3 1 1 1 > 4 3 1 1 1 2 2 3 3 > 1 1 1 1 2 4 3 2 4 > 3 4 2 1 2 2 3 1 3 > 3 4 2 1 2 2 1 2 4 > >-- Dr Richard Rowe Zoology & Tropical Ecology School of Marine & Tropical Biology James Cook University Townsville 4811 AUSTRALIA ph +61 7 47 81 4851 fax +61 7 47 25 1570 JCU has CRICOS Provider Code 00117J
Dear Ms/Mr,
In a package, I want to use PCA function. The structure I used follow this
page: http://www.statmethods.net/advstats/factor.html.
fit<-principle(mydata, nfactors=9, rotation=TRUE)
or:
result<-PCA(mydata)
But I don't known why R language in my computer noticed: "not found
principle", "not found PCA".
I download and installed R-2.6.2-win32.exe.
Thanks alot for answering me.
Hue University, VietNam.
[[alternative HTML version deleted]]