search for: pcaiv

Dear R users, How can I extract the residuals from a pcaiv/rda in ade4? In Vegan there is the residuals() function, giving the approximation of the original data from the unconstrained ordination Is there something similar in ade4? Nikos

Dear Forum, I have a class variable 1 (populations A-E), and two other class variables, variable 2 and variable 3. What I want is to see if the combination of var 2 and var 3, will give me a pattern that allows to distinguish populations. I found several packages like ade4, with pcaiv function and factoMineR. but there are not working. Using the ade4 package, when I try to build the pca: pca1 <- dudi.pca(D, scan = FALSE, nf = 2) Error in v * row.w : non-numeric argument to binary operator Does someone has suggestions? Thanks, Andy -- View this message in context: http://w...

Hello, The ade4 package is now available on CRAN. ade4 is a multivariate data analysis package oriented towards statistical ecology. The main functions include one-table (PCA, COA, MCA, PCO, etc.), two-tables (PCAIV, Co-inertia, CCA, etc.) and k-tables multivariate analysis methods, with several Monte-Carlo tests and many graphical display methods. A complete documentation with many example data sets is also available. Most of these methods and data sets come from statistical ecology, but the statistical meth...

...raphical user interface (GUI) for the ade4 package. Only the most basic functions of ade4 have a GUI in this first version : classical one-table data analysis methods (PCA, COA, MCA, PCO, etc.), one table with groups of rows (BGA, WGA, DA), and two-tables analysis methods (Coinertia analysis, CCA, PCAIV). http://pbil.univ-lyon1.fr/JTHome/ade4TkGUI.jpg One of the benefits of using ade4TkGUI is the centralized graphical display of the dudi objects created by ade4. A dudi is a list with many components http://pbil.univ-lyon1.fr/ade4html/dudi.html The GUI presents a window in which the user can click...

Hello, The ade4 package is now available on CRAN. ade4 is a multivariate data analysis package oriented towards statistical ecology. The main functions include one-table (PCA, COA, MCA, PCO, etc.), two-tables (PCAIV, Co-inertia, CCA, etc.) and k-tables multivariate analysis methods, with several Monte-Carlo tests and many graphical display methods. A complete documentation with many example data sets is also available. Most of these methods and data sets come from statistical ecology, but the statistical meth...

...raphical user interface (GUI) for the ade4 package. Only the most basic functions of ade4 have a GUI in this first version : classical one-table data analysis methods (PCA, COA, MCA, PCO, etc.), one table with groups of rows (BGA, WGA, DA), and two-tables analysis methods (Coinertia analysis, CCA, PCAIV). http://pbil.univ-lyon1.fr/JTHome/ade4TkGUI.jpg One of the benefits of using ade4TkGUI is the centralized graphical display of the dudi objects created by ade4. A dudi is a list with many components http://pbil.univ-lyon1.fr/ade4html/dudi.html The GUI presents a window in which the user can click...