Re: [R] bootstrapped CI for nonlinear models using nlsBoot from nlstools

2012-08-14 Thread Bill Pikounis
Hello Francisco: I am not familiar with nlsBoot, but if things cannot be solved there, another option is the example shown in Chapter 8, page 225-226 of the Venables & Ripley MASS book (2002) which uses nls and the boot recommended package from R. The MASS package has a scripts subfolder for this b

Re: [R] Problems of metafile plots when converting word to pdf file

2011-09-13 Thread Bill Pikounis
Jim, I have seen this outcome as well with graphs from time to time and agree with Jean-Christophe that the bug seems to creep in at the Windows / Office level. You do not mention your version of Word, but I have seen this with Word 2000 and Word 2007 (doc and docx) software and formats, for examp

Re: [R] barplot with varaible-width bars

2011-01-26 Thread Bill Pikounis
this call mod.barplot.default(yy[,2*1:5], las=1, width=yy[,(2*1:5)-1], space=c(.1,.5) ,beside=TRUE) looks like it might provide what you wanted. Hope that helps. Bill ----- Bill Pikounis http://billpikounis.net/ On Tue, Jan 25, 2011 at 10:47, Gould, A. Lawrence wrote: > I would lik

[R] [R-pkgs] First release of package "cg" for comparison of groups

2010-12-27 Thread Bill Pikounis
welcome and can be directed to at "cg at billpikounis.net" Thanks to all of the R Development Core Team for base R and its packages, all authors and maintainers of the packages Hmisc, grid, lattice, MASS, survival, multcomp, mvtnorm, nlme and VGAM on which cg depends, and all of the R communit

Re: [R] Box-Cox Transformation: Drastic differences when varying added constants

2010-05-17 Thread Bill Pikounis
Hi Holger, I would also highly recommend you look at the ?boxcox and ?logtrans functions in the MASS package. There is also a very illuminating, concise discussion about their use on Pages 170 - 172 of Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. with

Re: [R] LD50 and SE in GLMM (lmer)

2010-01-11 Thread Bill Pikounis
n to help? I myself always have a preference to use the logit / logistic over probit, as they are both symmetric around 0.5 and are often reported to provide similar results. Hope that helps, Bill ### Bill Pikounis Statistician 2010/1/7 Linda Bürgi : > > Hi All! >

Re: [R] Data source for American college football rankings?

2009-09-29 Thread Bill Pikounis
Hi Doug, An interesting site I stumbled on long ago related to your intial question of data download is at http://www.mratings.com/cf/compare.htm which also contains a CSV file version at http://www.mratings.com/cf/compare.csv of *64* different ranking systems. Other pages within the site disc

Re: [R] R in the NY Times

2009-01-07 Thread Bill Pikounis
, Bill Bill Pikounis Statistician On Wed, Jan 7, 2009 at 08:10, Zaslavsky, Alan M. wrote: > This article is accompanied by nice pictures of Robert and Ross. > > Data Analysts Captivated by Power of R > > http://www.nytimes.com/2009/01/07/technology/bus

Re: [R] ESS Toolbar missing after Ubuntu Update

2008-11-04 Thread Bill Pikounis
ould be executed, as expected. I did however have to point to /hardy repositories for my CRAN mirror, since the /intrepid directory was at R version 2.7.1, at least as of this past Sunday Nov 2 ET USA. Hope that helps, Bill Bill Pikounis Statistician On Mon, Nov 3, 2008 at 12:22, Martin Maechl

Re: [R] Missing data

2007-09-11 Thread Bill Pikounis
ope that helps, Bill ___ Bill Pikounis Statistician On 9/11/07, David Kaplan <[EMAIL PROTECTED]> wrote: > Hi all, > > I'm looking for a contributed package that can provide a detailed > account of missing data patterns and perhaps also provide imputation > procedures,