search for: maindonald

If anyone has a list of application areas where there is extensive use of R, I'd like to hear of it. My current short list is: Bioinformatics Epidemiology Geophysics Agriculture and crop science John Maindonald Mathematical Sciences Institute, Australian National University. john.maindonald at anu.edu.au

...text(x=0, y=0.5, lab = as.expression(levlist[which.panel[which.given]]), adj=0) } e.g. levlist <- list("A", "B") xyplot(11:14 ~ 1:4 | rep(1:2,2), scales=list(x=list(alternating=c(1,1), relation="sliced")), strip=stripfun, layout=c(1,2)) John Maindonald email: john.maindonald at anu.edu.au phone : +61 2 (6125)3473 fax : +61 2(6125)5549 Centre for Mathematics & Its Applications, Room 1194, John Dedman Mathematical Sciences Building (Building 27) Australian National University, Canberra ACT 0200. http://www.maths.anu.edu.au/~john...

...utational statistics offerings." "For more information on Revolution Computing, RPro, and ParallelR, visit www.revolution-computing.com" At present though, unless you have better success than me, all you will get from the Revolution Computing site is a revolutionary song! John Maindonald email: john.maindonald at anu.edu.au phone : +61 2 (6125)3473 fax : +61 2(6125)5549 Centre for Mathematics & Its Applications, Room 1194, John Dedman Mathematical Sciences Building (Building 27) Australian National University, Canberra ACT 0200.

I am looking for information on experimentation with the use of R in the teaching of statistics and science in schools. Any leads would be very welcome. I am certain that there is such experimentation. I've made this inquiry on r-sig-teaching, with no response. John. John Maindonald email: john.maindonald at anu.edu.au phone : +61 2 (6125)3473 fax : +61 2(6125)5549 Centre for Mathematics & Its Applications, Room 1194, John Dedman Mathematical Sciences Building (Building 27) Australian National University, Canberra ACT 0200.

...dual-Leverage plot is given in Krause & Olsen, whether with Cook's distance contours I do not recall. I do not have access to a copy of this book. Martin Maechler drew my attention to it in 2003, as superior to the Cook's distance plot. I have finally got around to coding it up! John Maindonald. "plot.lm" <- function (x, which = 1:4, caption = c("Residuals vs Fitted", "Normal Q-Q", "Scale-Location", "Cook's distance", "Residuals vs Leverage"), pan...

...he reference was to putting the ?.Rnw' files back into the vignettes directory from the inst/doc directory where they?d been placed in the course of creating the tar.gz file. I am still trying to work out what I need to put into ?.Rinstignore? so that ?.install_extras? is not installed. John Maindonald email: john.maindonald at anu.edu.au phone : +61 2 (6125)3473 fax : +61 2(6125)5549 Centre for Mathematics & Its Applications, Room 1194, John Dedman Mathematical Sciences Building (Building 27) Australian National University, Canberra ACT 0200. John Maindonald email...

Sorry. This, and the description in the ?Writing R Extensions? manual, leaves me completely mystified. Is it that I have to remove the PDFs that are created when I run ?R CMD build?, and somehow ensure that they are rebuilt when the package is installed? Do I need a Makefile? John Maindonald email: john.maindonald at anu.edu.au<mailto:john.maindonald at anu.edu.au> phone : +61 2 (6125)3473 fax : +61 2(6125)5549 Centre for Mathematics & Its Applications, Room 1194, John Dedman Mathematical Sciences Building (Building 27) Australian National University, Canb...

...ion 1.4.2 of "Writing R Extensions" %\VignetteEngine{knitr::knitr} should be %\VignetteEngine{knitr::knit} > sessionInfo() R version 3.0.2 (2013-09-25) Platform: x86_64-apple-darwin10.8.0 (64-bit) Is this sort of thing best reported here, or is a huge report in order? John Maindonald email: john.maindonald at anu.edu.au phone : +61 2 (6125)3473 fax : +61 2(6125)5549 Centre for Mathematics & Its Applications, Room 1194, John Dedman Mathematical Sciences Building (Building 27) Australian National University, Canberra ACT 0200.

...gt;> This should surely be ? = ??' + ? Also line 3 under ?Details? says <<< for a p?element row-vector x, ? >>> x is here surely a column vector, albeit the transpose of a row vector from the data matrix. cf page 322 of ?Modern Applied Statistics with S?, 4th edn. John Maindonald email: john.maindonald at anu.edu.au phone : +61 2 (6125)3473 fax : +61 2(6125)5549 Centre for Mathematics & Its Applications, Room 1194, John Dedman Mathematical Sciences Building (Building 27) Australian National University, Canberra ACT 0200.

Confirmation from John Maindonald. -- Brian D. Ripley, ripley@stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272860 (secr) Oxford OX1 3TG, UK Fax: +4...

...07 month = 09 day = 22 svn rev = 42941 language = R version.string = R version 2.6.0 beta (2007-09-22 r42941) Locale: C Search Path: .GlobalEnv, package:testpkg, package:stats, package:graphics, package:grDevices, package:utils, package:datasets, package:methods, Autoloads, package:base John Maindonald email: john.maindonald at anu.edu.au phone : +61 2 (6125)3473 fax : +61 2(6125)5549 Centre for Mathematics & Its Applications, Room 1194, John Dedman Mathematical Sciences Building (Building 27) Australian National University, Canberra ACT 0200.

..."where "* paste(y=="wood; ", x=="dbh"))) Is there a way to do this when values are to be substituted for a and b? i.e., the first element of the legend argument to legend() becomes, effectively: substitute(y == a * x^b, list(a = B[1], b=B[2])) John Maindonald email: john.maindonald at anu.edu.au phone : +61 2 (6125)3473 fax : +61 2(6125)5549 Centre for Bioinformation Science, Room 1194, John Dedman Mathematical Sciences Building (Building 27) Australian National University, Canberra ACT 0200.

...lar for all cultivars and for all herbicides, so that it is legitimate to pool as happens in the overall analysis. If a herbicide:cultivar combination has little effect the variability may be large, while if it has a dramatic effect (kills everything!), there may be no variability to speak of. John Maindonald. On 22 Feb 2005, at 10:06 PM, r-help-request at stat.math.ethz.ch wrote: > To: "'Bob Wheeler'" <bwheeler at echip.com> > Cc: r-help at stat.math.ethz.ch > Subject: RE: [R] power.anova.test for interaction effects > Reply-To: akniss at uwyo.edu > > > It...

....g. sqrt(y) by a symbol or symbolic expression that has the effect of inserting sqrt(y) into the place that it occupies. This would allow me to put an arbitrary expression into that position. [One can use text() or mtext() etc. to place titletxt on a graph.] Any clues would be most welcome. John Maindonald. John Maindonald email : john.maindonald at anu.edu.au Statistical Consulting Unit, phone : (6125)3998 c/o CMA, SMS, fax : (6125)5549 John Dedman Mathematical Sciences Building Australian National University Canberra ACT 0200 Australia -.-.-.-.-.-....

...s after how long 50% of the insects had died (I had 3 different instars (non significant fixed effect) and several different blocks (I did 4 replicates at a time)= random effect). Since there is no predict function for lmer, I used the following to get predicted values (thanks to a post by John Maindonald (I'll attach his post below)): model4 <- lmer (y~time + (1|blc/instar),family=binomial(link="probit")) summary(model4) b <- fixef(model4) X <- (model.matrix(terms(model4),zerotest)) hat <- X%*%b pxal <- pnorm(hat) # probit link, for logit it would be: pv...

...library(SMIR); data(bronchit); library(KernSmooth) >> library(SMIR); data(bronchit); library(KernSmooth) > \end{Sinput} > \end{Schunk} (I have omitted three blank lines at the start) With keep.source=FALSE, the commands are split onto separate lines, and there is no repetition. John Maindonald email: john.maindonald at anu.edu.au phone : +61 2 (6125)3473 fax : +61 2(6125)5549 Centre for Mathematics & Its Applications, Room 1194, John Dedman Mathematical Sciences Building (Building 27) Australian National University, Canberra ACT 0200. http://www.maths.anu.edu.au/~john...

...jor = 2 minor = 6.0 year = 2007 month = 10 day = 03 svn rev = 43063 language = R version.string = R version 2.6.0 (2007-10-03) Locale: C Search Path: .GlobalEnv, package:stats, package:graphics, package:grDevices, package:utils, package:datasets, package:methods, Autoloads, package:base John Maindonald email: john.maindonald at anu.edu.au phone : +61 2 (6125)3473 fax : +61 2(6125)5549 Centre for Mathematics & Its Applications, Room 1194, John Dedman Mathematical Sciences Building (Building 27) Australian National University, Canberra ACT 0200.

Consider the following analysis of a class experiment done as a Latin Square: > spinner <- gl(4,4,16,label=c("Murray","Angela","Shasha","Stephen")) > order <- gl(4,1,16) > treat <- scan() 1: 1 2 4 3 5: 4 3 1 2 9: 3 4 2 1 13: 2 1 3 4 17: Read 16 items > coin <-

...ped when required. I have checked that read.maimages (in limma) does not, unless I have missed something, have an option for reading zipped files. Is there any way to get around this without substantially complicating the exposition in marray-notes.pdf (also in the inst/doc subdirectory)? John Maindonald email: john.maindonald at anu.edu.au phone : +61 2 (6125)3473 fax : +61 2(6125)5549 Centre for Mathematics & Its Applications, Room 1194, John Dedman Mathematical Sciences Building (Building 27) Australian National University, Canberra ACT 0200. http://www.maths.anu.edu.au/~john...

...mation below-- Version: platform = i386-pc-mingw32 arch = x86 os = Win32 system = x86, Win32 status = major = 1 minor = 2.3 year = 2001 month = 04 day = 26 language = R Windows 98 SE 4.10 (build 2222) A Search Path: .GlobalEnv, package:ctest, Autoloads, package:base John Maindonald email : john.maindonald@anu.edu.au Statistical Consulting Unit, phone : (6125)3998 c/o CMA, SMS, fax : (6125)5549 John Dedman Mathematical Sciences Building Australian National University Canberra ACT 0200 Australia -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-....