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530 discussions - 1,715 posts

  • I have a 100Mb comma-separated file, and R takes several minutes to read it (via read.table()). This is R 1.9.0 on a linux box with a couple gigabytes of RAM. I am conjecturing that R is gc-ing, so ...
    Igor RivinIgor Rivin
    Jun 29, 2004 at 4:35 pm
    Jun 30, 2004 at 8:38 pm
  • Dear all, Is there a camera rotation for 3d graphics in R. I have seen it in a conference one time and thought it is pretty neat. the presenter was able to rotate the 3d graph with dragging the mouse ...
    Jean EidJean Eid
    Jun 3, 2004 at 11:11 am
    Jun 10, 2004 at 9:56 pm
  • Hello, My data are numbers of trees in plots sampled in a number of forest stands. Some stands were subjected to a treatment, others not. Several plots were sampled per stand to get a better idea of ...
    Dan BebberDan Bebber
    Jun 4, 2004 at 11:46 am
    Jun 8, 2004 at 12:52 pm
  • I am curious if there is any way to list only variables or functions in current environment, rather than listing all objects? Thanks. -- Daehyok Shin (Peter) Geography Department Univ. of North ...
    ShinShin
    Jun 20, 2004 at 2:59 am
    Jun 23, 2004 at 9:29 pm
  • The interface for dates in R is a little confusing to me. I want to create a vector of Date objects from vectors of years, months, and days. One solution I found is: years <- c(1991, 1992) months <- ...
    Shin, DaehyokShin, Daehyok
    Jun 7, 2004 at 3:16 pm
    Jun 8, 2004 at 4:55 am
  • I'm having trouble using binomial(link="cloglog") with GLMM in lme4, Version: 0.5-2, Date: 2004/03/11. The example in the Help file works fine, even simplified as follows: fm0 <- GLMM(immun~1, ...
    Spencer GravesSpencer Graves
    Jun 1, 2004 at 10:25 pm
    Jun 10, 2004 at 10:12 pm
  • Dear all, i am trying to redo the 'eyestudy' analysis presented on the site http://www.ats.ucla.edu/stat/stata/faq/relative_risk.htm with R (1.9.0), with special interest in the section on "relative ...
    Lutz Ph. BreitlingLutz Ph. Breitling
    Jun 2, 2004 at 10:52 am
    May 13, 2008 at 4:43 pm
  • In ?exists it says: inherits: should the enclosing frames of the environment be searched? I believe what it is saying is that if inherits is TRUE and it fails to find the variable it will look in the ...
    Gabor GrothendieckGabor Grothendieck
    Jun 14, 2004 at 1:54 am
    Jun 15, 2004 at 1:45 am
  • A colleague is receiving some data from another person. That person reads the data in SAS and it takes 30s and uses 64k RAM. That person then tries to read the data in R and it takes 10 minutes and ...
    Barry RowlingsonBarry Rowlingson
    Jun 29, 2004 at 6:00 pm
    Jun 30, 2004 at 11:46 am
  • Dear list, I've just upgraded to Fedora Core 2 and seeing as there wasn't an rpm for this OS on CRAN yet I thought it was about time I had a go at compiling R myself. Having run into the X11 problem ...
    Gavin SimpsonGavin Simpson
    Jun 7, 2004 at 8:08 pm
    Jun 8, 2004 at 5:54 pm
  • Hi! I'm new to R, but have worked with Splus before. I installed several packages in R (R-1.9.1) without problems, but when I try to install rgl (rgl_0.64-13.tar.gz). I get the following, and the ...
    E GCPE GCP
    Jun 25, 2004 at 5:36 pm
    Jun 30, 2004 at 9:04 pm
  • Hello, I wanted to share with a colleague a few R functions that I wrote. To this purpose, I created a small package on my machine (Unix) and emailed it to her. Now she is having troubles installing ...
    Giovanni PetrisGiovanni Petris
    Jun 25, 2004 at 4:10 pm
    Jun 28, 2004 at 7:43 pm
  • I know that if I have a function that returns multiple values, I should do return(list(foo, bar)). But what do I do on the recieving end? fn <- function(x) { return(list(foo, bar)) } I know that at ...
    Jack TannerJack Tanner
    Jun 23, 2004 at 6:45 pm
    Jun 24, 2004 at 1:44 pm
  • Hi, I would like to write a little automatic routine in R, but i am a too much of a beginner for that. I will appreciate any help regarding this particular problem. Let?s suppose I have a data.frame ...
    Monica Palaseanu-LovejoyMonica Palaseanu-Lovejoy
    Jun 23, 2004 at 9:07 am
    Jun 24, 2004 at 1:12 am
  • Hi, I'm a very fresh newbie to R. My first main question is, what the limitations of R are, what methods can R NOT do, esp. compared to (a) SPSS and (b) SAS? The second question is, how do you handle ...
    F.KalderF.Kalder
    Jun 18, 2004 at 8:44 pm
    Jun 21, 2004 at 2:53 pm
  • First, thanks to everyone who helped me get to grips with R in (x)emacs (I get confused easily). Special thanks to Stephen Eglen for continued support. My question is about non-linear binning, or ...
    Dan BolserDan Bolser
    Jun 16, 2004 at 10:52 am
    Jun 18, 2004 at 12:47 pm
  • Hello! I'm trying to install R-1.9.1a with readline on Suse Linux. As recommended in other posts, I've installed readline and readline-devel: kevin@redtail:~/R-1.9.1 rpm -qa | grep readline ...
    Kevin BartzKevin Bartz
    Jun 14, 2004 at 7:08 pm
    Jun 14, 2004 at 9:15 pm
  • Dear Sir/Madam, I encounter some problem duuring compilation of R 1.9.1 on AIX 5.1, after running "./configure" then I type "make" to compile: # make ..... gcc -I../../src/extra/zlib ...
    Frankie CheungFrankie Cheung
    Jun 23, 2004 at 8:50 am
    Jul 19, 2004 at 6:53 pm
  • Hi, I'm wondering if anyone can point me to a function that will allow me to do a ranking that treats ties differently than rank() provides for? I'd like a method that will assign to the elements of ...
    Douglas GroveDouglas Grove
    Jun 25, 2004 at 5:35 pm
    Jun 29, 2004 at 4:04 pm
  • hi: where would I find facilities to draw circles, ovals, and semicircles? (or should I construct them myself using curve?) regards, /ivo
    Ivo_welch-RstatIvo_welch-Rstat
    Jun 25, 2004 at 2:11 pm
    Jun 25, 2004 at 5:45 pm
  • I am discovering sapply! :-) Could you please help me with a very elementary question? Here is what I know. The following two programs generate the same answer ...
    Ajay ShahAjay Shah
    Jun 21, 2004 at 6:24 pm
    Jun 21, 2004 at 7:16 pm
  • hi, i'm working with mgcv packages and specially gam. My exemple is: when ploting test, you can view pred1 vs s(pred1, edf[1] ) & pred2 vs s(pred2, edf[2] ) I would like to know if there is a way to ...
    Yves MagliuloYves Magliulo
    Jun 16, 2004 at 2:38 pm
    Jun 19, 2004 at 12:20 am
  • I'm trying to learn how to create Trellis multi-panel plots, but I'm having some trouble reproducing the graphs shown in Venables & Ripley (2002) (e.g., Figs 4.14 & 4.15). Actually, everything looks ...
    Patrick BennettPatrick Bennett
    Jun 18, 2004 at 12:37 am
    Jun 18, 2004 at 2:18 pm
  • Hi all! I looked through the manual and FAQ, and did not find any information on how to load functions from files (with .R extension) to run them in R GUI under Windows. The only way I know is to ...
    Evgueni ParilovEvgueni Parilov
    Jun 14, 2004 at 7:31 pm
    Jun 15, 2004 at 6:57 pm
  • Hi, As was discussed earlier in another thread and as documented in R-exts .Call() should not be interruptible by Ctrl-C. However the following code, which spends most of its time inside mkChar, ...
    Vadim OgranovichVadim Ogranovich
    Jun 14, 2004 at 6:55 pm
    Jun 15, 2004 at 3:56 am
  • Hi, To speed up reading of large (few million lines) CSV files I am writing custom read functions (in C). By timing various approaches I figured out that one of the bottlenecks in reading character ...
    Vadim OgranovichVadim Ogranovich
    Jun 8, 2004 at 7:23 pm
    Jun 9, 2004 at 6:59 pm
  • sorry to impose again. At the default point size, R seems very good in selecting nice xlim/ylim parameters, and leaving a little bit of space at the edges of its xlim/ylim. alas, I now need to create ...
    Ivo welchIvo welch
    Jun 8, 2004 at 10:34 pm
    Jun 9, 2004 at 4:06 pm
  • I've got a few issues with the x-axes in the histogram and density plots. First, often the default x-axis doesn't even extend to the length of my data. R often draws histogram bars (or density lines) ...
    Rishi GantiRishi Ganti
    Jun 17, 2004 at 4:23 pm
    Jun 17, 2004 at 7:02 pm
  • Hi there; I am a neophyte to R though I have been messing around with programming in other languages and environments for some years (my dog's name is punchcard to give you some idea of how many ...
    Pamela HallPamela Hall
    Jun 15, 2004 at 7:14 am
    Jun 15, 2004 at 5:50 pm
  • Hello all, I'm working with different models that where implemented in DOS system each one, but for doing comparisons between them I require to put some of the results in an unified data form for all ...
    Martínez Ovando Juan CarlosMartínez Ovando Juan Carlos
    Jun 8, 2004 at 8:10 pm
    Jun 10, 2004 at 2:42 am
  • Hi I'm trying to use SJava and I have troubles. I try to run examples from "Calling R from Java" but,I have an error that "fatal error: enable to open the base package" I heard SJAVA bug, so,could ...
    矢野 順子矢野 順子
    Jun 8, 2004 at 4:07 pm
    Jun 9, 2004 at 2:26 pm
  • Dear all, We have started using R for data analysis since a few months and find it useful. We are planning to acquire a high-end dedicated system for microarray data analysis and thinking of a ...
    Saroj MohapatraSaroj Mohapatra
    Jun 2, 2004 at 11:11 pm
    Jun 5, 2004 at 11:53 am
  • Hi! Its not an R specific question but had no idea where to ask elsewhere. Does anyone know the orginal reference to the CAMBERA DISTANCE? Eryk. Ps.: I knew that its an out of topic question ...
    WolskiWolski
    Jun 29, 2004 at 7:44 am
    Jun 30, 2004 at 8:05 pm
  • Hi, I am doing PCA on several columns of data in a data.frame. I am interested in particular rows of data which may have a particular combination of 'types' of column values (without any ...
    Dan BolserDan Bolser
    Jun 29, 2004 at 10:04 am
    Jun 30, 2004 at 12:57 am
  • I have an ssh only login to a G5 on which I am hoping to run some analyses. The situation is complicated by the fact that the computer's owner is away for the summer (and thus also only has shell ...
    James HowisonJames Howison
    Jun 28, 2004 at 4:57 am
    Jun 29, 2004 at 5:32 pm
  • Dear all! Although the Psycho-Toolbox for Matlab is free software, Matlab isn't. I'm planning to do an experiment where it's essentail to travel to the subjects, not let the subjects come to where ...
    Christoph LangeChristoph Lange
    Jun 21, 2004 at 1:27 pm
    Jun 22, 2004 at 10:32 am
  • Hi R-users Does anyone know how to increase the resolution of plots to be exported? I'm exporting some plots but the maximum resolution that I get is 96 dpi. I want to get files with 300dpi. Thanks! ...
    Eduardo Dutra de ArmasEduardo Dutra de Armas
    Jun 16, 2004 at 9:44 pm
    Jun 18, 2004 at 4:27 pm
  • Hello! If I read ?subset, the workings of the argument drop (to me) seem to imply equivalence of A and B (R 1.9.0): #A dd <- data.frame(rt=rnorm(10), c=factor(gl(2,5))) dd <- subset(dd, c==1) dd$c <- ...
    Paul LemmensPaul Lemmens
    Jun 16, 2004 at 2:57 pm
    Jun 17, 2004 at 8:03 am
  • The US water year extends from 01 October yyyy-1 through 30 September yyyy and is referenced by the year starting on the included 01 January yyyy. I'd like to be able to find the annual means for the ...
    Clint BowmanClint Bowman
    Jun 16, 2004 at 6:21 pm
    Jun 17, 2004 at 4:32 am
  • Dear all Suppose I have teeth like data similar like x <- 1:200 y <- 0.03*x[1:100]+rnorm(100, mean=.001, sd=.03) z <- 3-rep(seq(1,100,10),each)*.03+rnorm(100,mean=.001, sd=.03) plot(x,c(y,z)) and I ...
    Petr PikalPetr Pikal
    Jun 15, 2004 at 11:11 am
    Jun 16, 2004 at 11:54 am
  • R is very fancy. You won't get mundane things like ordered probit off the shelf. (I will be very happy if someone will show how to use glm() to do a vanilla probit!) But you will get markov chain ...
    Ajay ShahAjay Shah
    Jun 12, 2004 at 6:28 am
    Jun 14, 2004 at 1:49 pm
  • Hello, I've begun to use R only recently. I've a problem: I can't open framework already saved about PCA. In particular I can't edit all the information because I've to export the graphics in order ...
    Edoardo StaculEdoardo Stacul
    Jun 7, 2004 at 1:16 pm
    Jun 14, 2004 at 8:14 am
  • Hello, I am trying to get the P values from the output of a summary for lm. lm <- lm(y ~ age + sex) s <- summary(lm) I thought that I might be able to get them using a combination of scan, grep and ...
    David J. NetherwayDavid J. Netherway
    Jun 9, 2004 at 10:22 am
    Jun 10, 2004 at 7:11 am
  • library(effects) mod <- lm(Measurement ~ Age + Sex, data=d) e <-effect("Sex",mod) The effect is evaluated at the mean age. Sex effect Sex F M 43.33083 44.48531 (Intercept) Age SexM 1 1 130.5859 0 23 ...
    David J. NetherwayDavid J. Netherway
    Jun 9, 2004 at 8:20 am
    Jun 10, 2004 at 1:54 am
  • Hallo I would recommend you to spent some time going through docummentation and especially FAQs. getwd and setwd for setting the working directory but in R objects are stored in one file .Rdata. OTOH ...
    Petr PikalPetr Pikal
    Jun 9, 2004 at 10:24 am
    Jun 9, 2004 at 2:24 pm
  • Martin Maechler said... Yikes! whatever happened to a good old 'INSTALL' file? People should not assume that just because you use linux you automatically know what you are doing! First it took me ...
    Dan BolserDan Bolser
    Jun 1, 2004 at 3:02 pm
    Jun 1, 2004 at 10:02 pm
  • Dear All, I want to know if there is some easy and reliable way to estimate the number of dominant eigenvalues when applying PCA on sample covariance matrix. Assume x-axis is the number of ...
    FredFred
    Jun 28, 2004 at 3:06 pm
    Jun 28, 2004 at 6:06 pm
  • R users: I want X-Y plotting with axes in reverse direction such as (0, -1, -2, -3, ....). How can I do it? Thanks in advance Xiao
    XIAO LIUXIAO LIU
    Jun 27, 2004 at 11:24 pm
    Jun 28, 2004 at 1:22 pm
  • Hi, let's see, if someone can help my with this one: I have the string as follows: Now I want to concatenate the items to one string, seperateted by space or something else, If possible without a ...
    Robin GrunaRobin Gruna
    Jun 25, 2004 at 9:07 am
    Jun 25, 2004 at 11:33 am
  • (Intercept) I(pos 3)TRUE 1 1 0 2 1 0 3 1 0 4 1 1 5 1 1 attr(,"assign") [1] 0 1 attr(,"contrasts") attr(,"contrasts")$"I(pos 3)" [1] "contr.treatment" This does not: Error in "contrasts<-"(`*tmp*`, ...
    Trevor HastieTrevor Hastie
    Jun 24, 2004 at 10:12 pm
    Jun 25, 2004 at 6:06 am
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Prof Brian Ripley: 154 posts Liaw, Andy: 61 posts Peter Dalgaard: 49 posts Spencer Graves: 47 posts Gabor Grothendieck: 44 posts Uwe Ligges: 38 posts Wolski: 38 posts Martin Maechler: 29 posts Duncan Murdoch: 28 posts Thomas Lumley: 21 posts Frank E Harrell Jr: 19 posts Roger D. Peng: 19 posts Marc Schwartz: 18 posts Petr Pikal: 17 posts Deepayan Sarkar: 16 posts Dirk Eddelbuettel: 16 posts Shin, Daehyok: 16 posts Dan Bolser: 15 posts Jonathan Baron: 13 posts Vadim Ogranovich: 13 posts
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