search for: gparot

We have just put a package GPArotation on CRAN. The functions in this package perform an number of different orthogonal and oblique rotations for factor analysis, using the gradient projection algorithm described in Coen A. Bernaards and Robert I. Jennrich (2005), "Gradient Projection Algorithms and Software for Arbitrar...

We have just put a package GPArotation on CRAN. The functions in this package perform an number of different orthogonal and oblique rotations for factor analysis, using the gradient projection algorithm described in Coen A. Bernaards and Robert I. Jennrich (2005), "Gradient Projection Algorithms and Software for Arbitrar...

...] # extract un-rotated scores of 1st principal component mtcars$PC2 <- .PC$scores[,2] # extract un-rotated scores of 2nd principal component head(mtcars[, c('PC1', 'PC2')]) However, I no longer understand how to do so if I want to use ?principal in 'psych' and any of the GPArotation methods. For example, require(psych) r <- cor(mtcars[,c("am","carb","cyl","disp","drat","gear","hp","mpg")]) pca <- principal(r, nfactors = 8, residuals = T, rotate="none") # or 'varimax' or...

A bit of a newbee to R and factor rotation I am trying to understand factor rotations and their implementation in R, particularly the GPArotation library. I have tried to reproduce some of the examples that I have found, e.g., I have taken the values from Jacksons example in "Oblimin Rotation", Encyclopedia of Biostatistics http://onlinelibrary.wiley.com/doi/10.1002/0470011815.b2a13060/abstract and run it through R: librar...

...ng to R3.20 I have installed R Factor v2.4.2 This package requires 'polycor' library Unfortunately, 'polycor' does not exist in R3.20 DATASET ACTIVATE DataSet1. *M?rio Basto, Jos? Manuel Pereira, IPCA *Required: SPSS 21 and R Integration Plugin *R Packages required: psych, polycor, GPArotation, nFactors, corpcor, ICS, R.utils. set printback off. Error in library(polycor) : there is no package called 'polycor' This means the very good utility does not run in the way I have installed both R and SPSS Does anyone know what I've done wrong and how to overcome this? Prof. Ga...

Hello, I need to do a principal component analysis with EQUAMAX-rotation. Unfortunately the function principal() I use normally for PCA does not offer this rotation specification. I could find out that this might be possible somehow with the package GPArotation but until now I could not figure out how to use this in the principal component analysis. Maybe someone can give an example on how to do an equamax-rotation PCA? Or is there a function in another package that offers the use of equamax-rotation directly? Thank you for your help! -- View this...

...XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX. DATASET NAME DatenSet1 WINDOW=FRONT. DATASET ACTIVATE DatenSet1. SAVE OUTFILE='C:\XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX /COMPRESSED. *M?rio Basto, Jos? Manuel Pereira, IPCA *Required: SPSS 19 and R Integration Plugin *R Packages required: psych, polycor, GPArotation, nFactors, corpcor, ICS. set printback off. -- Till Below (PhD Student) Humboldt-Universit?t zu Berlin

...cores). I'd appreciate your help in whether you see anything wrong in "pc2" or "pc3"? set.seed(1) x1=rnorm(200); x2=0.9*x1; x3=0.7*x1; x4=x1*x1; x5=x1*x1*x1; x6=rnorm(200); x7=0.9*x6; x8=0.7*x6; x9=x6*x6; x10=x6*x6*x6; x <- cbind(x1,x2,x3,x4,x5,x6,x7,x8,x9,x10) require(GPArotation) pc1 <- princomp(x, cor = TRUE, scores = TRUE) pc2 <- quartimax(pc1$loadings[,1:2],normalize=TRUE)$loadings pc3 <- scale(x%*% pc2) pc4 <- apply(x, 2, function(x) cor(x, pc3)^2) Thanks in advance for any help! Axel. [[alternative HTML version deleted]]

...OK * checking package dependencies ... OK * checking if this is a source package ... OK * checking whether package 'psych' can be installed ... ERROR Installation failed. The installation logfile: -Id:/Rcompile/CRANpkg/lib/2.11/Rcpp/include I do have several suggested packages (polycor, GPArotation, MASS, graph, Rgraphviz, mvtnorm, Rcsdp), but none of these are actually required. My examples all ask if the suggested packages are available and then do not call them if they are not. Any suggestions on what to do would be appreciated. Thanks. Bill -- William Revelle http://pers...

I am running a PCA, but would like to rotate my data and limit the number of factors that are analyzed. I can do this using the "principal" command from the psych package [principal(my.data, nfactors=3,rotate="varimax")], but the issue is that this does not report scores for the Principal Components the way "princomp" does. My question is: Can you get an

...le with your out-of-date version of R. See: ftp://cran.r-project.org/pub/R/src/contrib/Archive/polycor/ Good luck; David. > > DATASET ACTIVATE DataSet1. > *M?rio Basto, Jos? Manuel Pereira, IPCA > *Required: SPSS 21 and R Integration Plugin > *R Packages required: psych, polycor, GPArotation, nFactors, corpcor, ICS, R.utils. > set printback off. > Error in library(polycor) : there is no package called 'polycor' > > This means the very good utility does not run in the way I have installed both R and SPSS > Does anyone know what I've done wrong and how to...

Thanks to Mr.Liviu Androvic and Mr.Richard Rowe helped me in PCA. Because I have just learn R language in a few day so I have many problem. 1) I don't know why PCA rotation function not run although I try many times. Would you please hepl me and explain how to read the PCA map (both of rotated and unrotated) in a concrete example. 2) Where I can find document relate: Plan S(A), S(A*B),

Dear Folks I need to rotate PCA loadings and scores using R. I have run a pca using princomp and I have rotated PCA results with varimax. Using varimax R gives me back just rotated PC loadings without rotated PC scores. Does anybody know how I can obtain/calculate rotated PC scores with R? Your kindly help is appreciated in advance Francesca [[alternative HTML version deleted]]

...factor correlations?!", I made the changes myself. I would be very grateful if they'd find their way into a release. I corrected a small error in John Fox's code and made another change that enables factor correlations not only for promax, but also for the rotation methods in package GPArotation. The changes are against R-devel, downloaded on September 9th 2008. Changes are indicated by comments from John Fox and me. I also changed factanal.Rd accordingly, this is commented too. My bug report is at http://bugs.r-project.org/cgi-bin/R/wishlist?id=10931;user=guest John Fox's orig...

...uot;,"GenKern","geometry","geoR","geoRglm","ggm","ggplot","giRaph","gld","gllm","glmmML","glmpath","glpk","gmodels","gmp","gmt","gnm","GPArotation","gpclib","gplots","gpls","graphics","grasper","GRASS","gRbase","grDevices","gregmisc","grid","gridBase","grnnR","grouped","GroupSeq","gss"...

CRAN (and crantastic) updates this week New packages ------------ * allan (1.0) Alan Lee http://crantastic.org/packages/allan Automates Large Linear Analysis Model Fitting * andrews (1.0) Jaroslav Myslivec http://crantastic.org/packages/andrews Andrews curves for visualization of multidimensional data * anesrake (0.3) Josh Pasek http://crantastic.org/packages/anesrake This