Re: [R] tcltk, tcltk2, Rcmdr, Mac OS X

Larry, Since it looks like you've got your problem about whipped, hope you don't mind if I piggy back on here... Same sort of problem... installed Rcmdr via the Package Installer. Followed the directions for running X11/Tk ala the site mentioned earlier and this is what I get when I

Re: [R] tcltk, tcltk2, Rcmdr, Mac OS X

Lawrence Hanser wrote: Monte, I vaguely remember having exactly the same error message at some point in my journey. Why don't you try simply loading tcltk first to see if you can then load Rcmdr: library(tcltk) Larry, Oddly enough, I had tried just that before, with no success. This

Re: [R] tcltk, tcltk2, Rcmdr, Mac OS X

Peter Dalgaard wrote: Man, I'd forgotten how fugly plain ole X11 was compared to Aqua... ;) Do we have a volunteer to get Tcl/Tk Aqua working with R? ;-) (Seriously, read Mac OS X FAQ 2.1.7 before even thinking of doing that!) Oh heavens no! ;) I was working my way through a Python

[R] sequence that counts up and back down

I hit a minor sticking point working one of the problems in 'Using R' (Verzani). I'm having difficulty with generating a sequence that goes 1, 2, 3, 4, 5, 4, 3, 2, 1. I can make one that counts up, I can make one that counts down, etc. but one that counts up then down like this (short of

[R] Stat textbook recommendations?

Hello, I'm looking for a textbook that can explain some of the math behind the intro-to-intermediate stuff like ANOVA, multiple regression, non- parametric tests, etc. A little background: I took an intro stats course last year and would like to further my education. Being as that was the

Re: [R] Stat textbook recommendations?

wood, divide the work and give orders. Instead, teach them to yearn for the vast and endless sea. [Antoine de St. Exupery] Monte Milanuk wrote: Hello, I'm looking for a textbook that can explain some of the math behind the intro-to-intermediate stuff like ANOVA, multiple regression, non

Re: [R] Stat textbook recommendations?

On Jan 23, 2009, at 11:23 AM, Peter Dalgaard wrote: Re. ISwR, you might want to take notice that it was originally written for a course that used Altman's Practical Statistics for Medical Research. It is, however, a bit wordy for some and glosses rather too quickly over the math. Another

Re: [R] regression model selection (John P. Burkett)

John, Thanks for the tip on that document; after some searching I found a PDF copy of it on the 'Net. It may take me a little while to work through it, but it looks to be full of good info and worth the effort. I'll also take a look at leaps as I get time. Thanks, Monte [[alternative

[R] regression model selection

Hello, Newbie here, be gentle ;) I have a reference book that discusses regression model selection using several methods - what they call 'Forward Model Selection' i.e. add one variable at a time and examining R, R^2, Mallow's C-p value, etc., 'Backward Model Selection' i.e. starting out with