Re: [R] Reading data

Sometimes it is easiest to open a file using a file selection widget. I keep this in my .Rprofile: getOpenFile - function(...){ require(tcltk) return(tclvalue(tkgetOpenFile())) } With this you can find your file and open it with rel - read.table(getOpenFile(), quote=, header=FALSE,

Re: [R] Selecting groups with R

To drop empty factor levels from a subset, I use the following: a.subset - subset(dataset, Color!='BLUE') ifac - sapply(a.subset,is.factor) a.subset[ifac] - lapply(a.subset[ifac],factor) Mike dataset Color Score 1 RED10 2 RED13 3 RED12 4 WHITE22 5 WHITE27 6 WHITE

Re: [R] OK - I got the data - now what? :-)

Mark wrote: Currently my data is one experiment per row, but that's wasting space as most experiments only take 20% of the row and 80% of the row is filled with 0's. I might want to make the array more narrow and have a flag somewhere in the 1st 10 columns that says the

Re: [R] Using 'aggregate' when dependent on row value increments

jim == jim holtman jholt...@gmail.com writes: Is this what you want: aggregate(x$Sim_1986, list(trunc(x$Latitude)), mean) Group.1 x 1 82 55.04276 2 83 60.26186 3 84 39.40297 4 85 22.12000 You could also use cut to convert Latitude to a factor: aggregate(x$Sim_1986,

Re: [R] nls factor

Manuel == Manuel Morales manuel.a.mora...@williams.edu writes: nls(y ~ a[fac]*x^b, start=list(a=c(1,1), b=0.25)) Did you mean a[f]? nls(y ~ a[f]*x^b, start=list(a=c(1,1), b=0.25)) Mike __ R-help@r-project.org mailing list

Re: [R] R on netbooks et al?

Liaw, == Liaw, Andy andy_l...@merck.com writes: Are you sure that's dual atoms? AFAIK it has a single Atom N270 (single core) at 1.6GHz. With hyper-threading, you may see two cpus. Yep - that is exactly what is going on. Mike __

Re: [R] R on netbooks et al?

Jim == Jim Lemon j...@bitwrit.com.au writes: I've got R on my little EeePC as well. Great for most jobs and I highly recommend a DC/DC convertor for plugging into your car's cigarette lighter to get around the crap battery problem. I run R on my Eee PC as well - no problems

Re: [R] Inference for R Spam

scientists! Regards, Mike -- Michael A. Miller mmill...@iupui.edu Department of Radiology, Indiana University School of Medicine __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read

Re: [R] Inference for R Spam

Rolf == Rolf Turner r.tur...@auckland.ac.nz writes: On 4/03/2009, at 11:50 AM, Michael A. Miller wrote: Sports scores are not statistics, they are measurements (counts) of the number of times each team scores. There is no sampling and vanishingly small possibility

Re: [R] Inference for R Spam

-- Michael A. Miller mmill...@iupui.edu Department of Radiology, Indiana University School of Medicine __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R

Re: [R] connecting boxplots

johnhj jhar...@web.de wrote: Can you also describe me how to describe the standard deviation of the boxplots/matrices ? Try tapply: x -read.table(file=test.txt) x$group - rep(1:8, each=5) boxplot(V3~gruppe, data=x) with(x, tapply(V3, gruppe, sd)) Mike

Re: [R] Bug in is ?

Wacek Kusnierczyk [EMAIL PROTECTED] wrote: but it does seem to be a wrong decision for a language focused mostly with statistical computations and not computer science concerned with how to represent an integer. The key word here is computations. And after reading this

Re: [R] pairwise.t.test for paired data

Peter == Peter Dalgaard [EMAIL PROTECTED] writes: (Oddly enough, this issue hasn't come up in the 6+ years that the function has existed, and then it pops up twice with little over a week between, see the thread started by James Root on March 26.) Odd indeed - this issue

Re: [R] generating a paired t-test with multiple levels of a factor

James == James Root [EMAIL PROTECTED] writes: Is there a way to run all paired t-tests where a paired t-test is run for every possible combination? Sounds like pairwise.t.test is the sort of thing you are looking for... Mike __

Re: [R] Highlighting different series with colors

Valentin == Valentin Bellassen [EMAIL PROTECTED] writes: Hello, I have a data frame with 3 vectors $x, $y, and $type. I would like to plot $x~$y and having different colors for the corresponding points, one for each level of $type. Would someone know how to do that? Is it

Re: [R] History of R

graphics. Every few years I used to do a search to find better tools for analysis and graphics - I haven't felt the need to repeat that since I found R. Mike -- Michael A. Miller [EMAIL PROTECTED] Imaging Sciences, Department of Radiology, IU School of Medicine

Re: [R] 4 dimensional graphics

, height) with points set according to a value. This is a bit heretical for this list, but have you looked into non-R things like paraview? (www.paraview.org) Mike -- Michael A. Miller [EMAIL PROTECTED] Imaging Sciences, Department of Radiology, IU School of Medicine

Re: [R] An R is slow-article

Paul == Paul Gilbert [EMAIL PROTECTED] writes: Gustaf Rydevik wrote: The author also have some thought-provoking opinions on R being no-good and that you should write everything in C People used to say assembler, that's progress. From the FORTRAN Preliminary Report, IBM,