Re: [R] Mahalanobis Distance

How would you interpret such a distance? David Cross d.cr...@tcu.edu www.davidcross.us On Sep 26, 2011, at 2:05 PM, jorgeA wrote: > Hello R helpers, > > I'm trying to use Mahalanobis distance to calculate distance of two time > series, to make some comparations with euclidea

[R] Handling Missing Data

cases with missing values before doing my analyses, and I can't see a way to do this without referring to the entire data set as a whole. I am sure I am missing something fairly simple, but just can't see it. TIA David Cross d.cr...@tcu.edu www.dav

Re: [R] Supporting R/Membership

For my part, knowing all of my (mostly bad) habits, I would only donate if I could do it online. And I would be happy to donate! Cheers David Cross d.cr...@tcu.edu www.davidcross.us On Sep 24, 2011, at 10:43 AM, Joshua Wiley wrote: > Dear R Users, > > I know issues like this hav

Re: [R] The BiodiversityR can't work

I have not used BiodiversityGUI.R, but it looks like it needs Rcmdr ... are you using Rcmdr? In case you are not, here is the url: http://socserv.mcmaster.ca/jfox/Misc/Rcmdr/ Cheers David Cross d.cr...@tcu.edu www.davidcross.us On Jul 6, 2011, at 5:37 PM, Aishuijiao wrote: > Sour

Re: [R] analysing a three level reponse

You could analyze these data with a multinomial logit model, with an ordinal response. I don't have my copy handy, but I know that Agresti (Categorical Data Analysis, Wiley) covers these models. Cheers David Cross d.cr...@tcu.edu www.davidcross.us On Jun 22, 2011, at 8:19 AM, Matt

Re: [R] Bartlett's Test of Sphericity

Yes, Bartlett's is not a good way to "justify" a PCA. David Cross d.cr...@tcu.edu www.davidcross.us On Jun 18, 2011, at 1:47 AM, Jeremy Miles wrote: > cortest.bartlett() in the psych package. > > I've never seen a non-significant Bartlett's test. > >

Re: [R] Parameter Estimates needed from lmer output

If I remember correctly, coef(m1) would do it ... but it has been a while since I last used lmer, and I am working only from memory. Cheers David Cross d.cr...@tcu.edu www.davidcross.us On May 18, 2011, at 6:29 PM, Stephen Peterson wrote: > Hello, > I am looking for some help on how

Re: [R] Help with 2-D plot of k-mean clustering analysis

I wonder if it makes sense to reduce the dimensionality of the variables somehow? David Cross d.cr...@tcu.edu www.davidcross.us On May 18, 2011, at 9:41 AM, Meng Wu wrote: > Hi, all > > I would like to use R to perform k-means clustering on my data which > included 33 samples m

Re: [R] discriminant analysis

There is a good tutorial here: http://www.statsoft.com/textbook/discriminant-function-analysis/ I doubt your question is appropriate for this list ... good luck! David Cross d.cr...@tcu.edu www.davidcross.us On May 8, 2011, at 7:28 PM, Sylvia Rocha wrote: > I am a student of ecology f

Re: [R] Power Analysis

It seems to me, with deltas this large (relative to the SD), that a significance test is a moot point! David Cross d.cr...@tcu.edu www.davidcross.us On Apr 18, 2011, at 5:14 PM, Albyn Jones wrote: > First, note that you are doing two separate power calculations, > one with n=2 and sd

Re: [R] MLE estimation

I am partial to Gary King's book: Unifying Political Methodology: The Likelihood Theory of Statistical Inference (University of Michigan Press, 1998) Cheers David Cross d.cr...@tcu.edu www.davidcross.us On Feb 27, 2011, at 2:19 PM, Ning Cheng wrote: > Dear List, > This proble

Re: [R] editor for MacOS

emacs/ess/sweave work for me! http://ess.r-project.org/ http://www.stat.uni-muenchen.de/~leisch/Sweave/ Cheers David Cross d.cr...@tcu.edu www.davidcross.us On Dec 16, 2010, at 7:56 PM, Steve Lianoglou wrote: I didn't see JGR suggested yet (maybe it's like Tinn-R

Re: [R] Please, help me with 'mattern' variogram

I think the problem is with the (2,2) element in your hessian, unless that is a typo. Cheers David Cross d.cr...@tcu.edu www.davidcross.us On Nov 16, 2010, at 8:33 PM, Jimmy Martina wrote: Hi, R-folks: I have been tryin many combination of parameter to make Matern variogram to work

Re: [R] R on a ma c

I have had no problems with R on my Mac ... just download, install, and run ... let me know if you have any problems. Cheers David Cross d.cr...@tcu.edu www.davidcross.us On Oct 14, 2010, at 11:25 AM, Tiffany Kinder wrote: Hello, Is R very compatible with a Mac? A colleague of mine

Re: [R] Emacs for R

g, March 15-17, Vienna, Austria Cheers David Cross d.cr...@tcu.edu www.davidcross.us On Mar 1, 2010, at 10:41 AM, Gustave Lefou wrote: Dear all, From the recent discussion, I have wondered where I could find some quick step documentation on Emacs for R (especially on Windows).

[R] reading data in rjags

ation recognizes neither read command. Am I missing something? TIA, David Cross www.davidcross.us __ 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-gu

Re: [R] How to google for R stuff?

You can also try: http://www.rseek.org/ Cheers Duncan Murdoch wrote: On 20/05/2009 10:01 AM, cr...@binghamton.edu wrote: For Google searches, I find that throwing in the term cran on every search helps weed out irrelevant pages. For example, instead of r residuals I type r cran residua