[R] how to get design matrix?
How do you get the design matrix R used when calculating ANOVA? -- View this message in context: http://www.nabble.com/how-to-get-design-matrix--tp23464638p23464638.html Sent from the R help mailing list archive at Nabble.com. __ 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.
Re: [R] how to get design matrix?
On Sat, 2009-05-09 at 19:29 -0700, linakpl wrote: If I was doing an ANOVA analysis how can I get the design matrix R used? You can do ANOVA several different ways in R, and that is just the few functions to do this that I am aware of. Showing us what function/code you used would be really helpful and is requested by the posting guide. If you fitted the model using lm, then use the model.matrix method: dat - data.frame(Y = rnorm(100), X = gl(4,25)) mod - lm(Y ~ X, data = dat) mod summary(mod) model.matrix(mod) This also works if you used aov() If you used something else, then you'll have to say what... HTH G -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Dr. Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% __ 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.
[R] how to get design matrix?
If I was doing an ANOVA analysis how can I get the design matrix R used? -- View this message in context: http://www.nabble.com/how-to-get-design-matrix--tp23466549p23466549.html Sent from the R help mailing list archive at Nabble.com. __ 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.
Re: [R] how to get design matrix?
Got code? On May 9, 2009, at 10:29 PM, linakpl wrote: If I was doing an ANOVA analysis how can I get the design matrix R used? -- David Winsemius, MD Heritage Laboratories West Hartford, CT __ 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.
