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625 discussions - 1,892 posts

  • Greetings, R-Citizens: I have the good fortune of working with a 19" 1280 X 1024 pixel monitor. My R-code produces nice-looking graphics on this machine but the same code results in crowded plots on ...
    Charles Annis, P.E.Charles Annis, P.E.
    Aug 28, 2006 at 12:50 pm
    Aug 29, 2006 at 11:30 am
  • Hi, I'm trying to fit a model using variance components in R, but if very new on it, so I'm asking for your help. I have imported the SPSS database onto R, but I don't know how to convert the ...
    Iuri GavronskiIuri Gavronski
    Aug 10, 2006 at 7:29 pm
    Aug 20, 2006 at 10:31 pm
  • Dear R-list, I would like to use the lattice library to show several groups on the same graph. Here's my example : ## the data f1 <- factor(c("mod1","mod2","mod3"),levels=c("mod1","mod2","mod3")) f1 ...
    Laurent RhelpLaurent Rhelp
    Aug 29, 2006 at 8:18 pm
    Sep 3, 2006 at 5:11 pm
  • Simple problem but I don't see the answer. I'm trying to clean up some data I have 120 columns in a data.frame. I have one value in a column named "blaw" that I want to change. How do I find the ...
    John KaneJohn Kane
    Aug 2, 2006 at 9:01 pm
    Aug 4, 2006 at 12:22 am
  • Hi, do you know, a method to convert an decimal value (integer) to the corresponding hexadecimal value ? thinks for help. Romain -- Lorrilli?re Romain UMR 8079 Laboratoire Ecologie, Syst?matique et ...
    Romain LorrilliereRomain Lorrilliere
    Aug 30, 2006 at 2:04 pm
    Sep 9, 2006 at 12:24 pm
  • Hello, at the moment I am doing quite a lot of regression, especially logistic regression, on 20000 or more records with 30 or more factors, using the "step" function to search for the model with the ...
    G RussellG Russell
    Aug 30, 2006 at 12:47 pm
    Sep 1, 2006 at 4:22 pm
  • Dear List, why does as.data.frame(cbind()) transform numeric variables to factors, once one of the other variablesused is a character vector? # x.1 <- rnorm(10) x.2 <- c(rep("Test",10)) Foo <- ...
    Tom BoonenTom Boonen
    Aug 18, 2006 at 2:41 pm
    Aug 21, 2006 at 5:48 pm
  • I am (for my sins) having to do some work using R under Windoze. I wanted to set up a .Rprofile to control my set-up. The docs on .Rprofile say that it can/should be placed in ``the user's home ...
    Rolf TurnerRolf Turner
    Aug 30, 2006 at 9:49 pm
    Aug 31, 2006 at 7:32 am
  • Hi All: I'm new to R and have a few questions about getting R to run efficiently with large datasets. I'm running R on Windows XP with 1Gb ram (so about 600mb-700mb after the usual windows ...
    Damien MooreDamien Moore
    Aug 21, 2006 at 5:49 pm
    Aug 23, 2006 at 5:15 pm
  • I was looking ?aggregate and ran the first example aggregate(state.x77, list(Region = state.region), mean) The variables in state.x77 appear to be : Population Income Illiteracy Life Exp Murder HS ...
    John KaneJohn Kane
    Aug 21, 2006 at 6:00 pm
    Aug 22, 2006 at 8:31 pm
  • Greetings, Amigos: I have been trying without success to convert a character string, [1] "3,6,10" into c(3,6,10) for subsequent use. as.numeric(repeated.measures.columns) doesn't work (likely because ...
    Charles Annis, P.E.Charles Annis, P.E.
    Aug 19, 2006 at 11:58 am
    Aug 21, 2006 at 2:16 pm
  • Hello, How do I split a y-axis to plot data on different scales? Eg: x <- 1:10 y <- c(-0.01,0.79,0.74,0.55,-0.67,0.32,-0.47,-0.05,723,759) plot(x,y) I'd like to show these data on the same plot, but ...
    Rashmi MathurRashmi Mathur
    Aug 13, 2006 at 6:48 pm
    Aug 20, 2006 at 1:58 pm
  • If I want to display a few polynomial regression fits I can do something like for (i in 1:6) { mod <- lm(y ~ poly(x,i)) print(summary(mod)) } Suppose that I don't want to over-write the fitted model ...
    Murray JorgensenMurray Jorgensen
    Aug 1, 2006 at 4:08 am
    Aug 3, 2006 at 4:30 am
  • Hello everybody, I have some questions on ANOVA in general and on ANOVA in R particularly. I am not Statistician, therefore I would be very appreciated if you answer it in a simple way. 1. First of ...
    Amasco MiralisusAmasco Miralisus
    Aug 26, 2006 at 10:07 pm
    Sep 22, 2006 at 6:44 am
  • Hello all and thank you, I will try to make this as clear as I can. I have a matrix, at the top of the matrix are 4 time points, the first col describes the sample, then under each time point I have ...
    H. Paul BentonH. Paul Benton
    Aug 28, 2006 at 10:28 pm
    Aug 29, 2006 at 12:23 am
  • Dear List, The following code produces a list, which is what I what: set.seed(123) tmpf <- function() { x <- rpois(rpois(1,4),2) } n <- 3 m <- replicate(n,tmpf()) m [[1]] [1] 3 2 4 [[2]] [1] 0 2 4 2 ...
    xpRt.wannabexpRt.wannabe
    Aug 25, 2006 at 6:52 pm
    Aug 28, 2006 at 7:58 am
  • Can you provide the summary(m2) results?
    Doran, HaroldDoran, Harold
    Aug 16, 2006 at 11:35 am
    Aug 17, 2006 at 10:23 pm
  • I'm having problems getting nls to agree that convergence has occurred in a toy problem. nls.out never gets defined when there is an error in nls. Reaching the maximum number of iterations is alway ...
    Earl F. GlynnEarl F. Glynn
    Aug 15, 2006 at 4:59 pm
    Aug 17, 2006 at 5:38 pm
  • ... configure: error: Maybe change CFLAGS or FFLAGS?" Dear list, This problem has been posted before (http://finzi.psych.upenn.edu/R/Rhelp02a/archive/7982.html), but suggestions did not help. My ...
    MikeMike
    Aug 7, 2006 at 2:46 am
    Aug 8, 2006 at 10:39 pm
  • Hi there I have been using R to perform kmeans on a dataset. The data is fed in using read.table and then a matrix (x) is created i.e: [ mat <- matrix(0, nlevels(DF$V1), nlevels(DF$V2), dimnames = ...
    FfenicsFfenics
    Aug 7, 2006 at 2:38 pm
    Aug 7, 2006 at 4:49 pm
  • Dear All My data consists in 96 groups, each one with 10 observations. Levene's test suggests that the variances are not equal, and therefore I have tried to apply the classical transformations to ...
    Paul SmithPaul Smith
    Aug 3, 2006 at 1:33 pm
    Aug 4, 2006 at 10:21 am
  • Dear R helpers, I would like to update R 2.2.1 to the latest version, How can I do it without loosing all my installed packages? Many thanks Nguyen
    Nguyen Dinh NguyenNguyen Dinh Nguyen
    Aug 30, 2006 at 11:47 pm
    Sep 4, 2006 at 2:38 pm
  • What is the R way of computing cumulative growth rates given a series of discrete values indexed . For instance, given a matrix of 20 observations for each of 5 series (zz), what is the most straight ...
    Toby_marksToby_marks
    Aug 31, 2006 at 8:22 pm
    Sep 1, 2006 at 9:54 pm
  • Hi! I would like to be able to create formulas automatically. For example, I want to be able to create a function that takes on two values: resp and x, and then creates the proper formula to regress ...
    Maria MontezMaria Montez
    Aug 24, 2006 at 9:01 pm
    Aug 28, 2006 at 8:09 pm
  • Me and some colleagues are planning to write a textbook together ("Statistics using R") where the target audience for the book is psychologists and students of psychology. We thought that it might be ...
    Tom Backer JohnsenTom Backer Johnsen
    Aug 22, 2006 at 4:36 pm
    Aug 25, 2006 at 8:38 am
  • Dear all, I apologize if my question is quite simple. I have a dataset (20 columns & 1000 rows) which some of columns have the same value and the others have different values. Here are some piece of ...
    Muhammad SubiantoMuhammad Subianto
    Aug 24, 2006 at 4:59 pm
    Aug 25, 2006 at 8:28 am
  • How do I change the font size in the facet labels along the edges of the plot? For example (from the ggplot help file): p<-ggplot(tips, sex ~ smoker, aesthetics=list(x=tip/total_bill)) gghistogram(p) ...
    Walker, SamWalker, Sam
    Aug 2, 2006 at 7:43 pm
    Aug 9, 2006 at 3:19 pm
  • The data sets I am working with all have a weight variable--e.g., each row doesn't mean 1 observation. With that in mind, nearly all of the graphs and summary statistics are incorrect for my data, ...
    Rick BischoffRick Bischoff
    Aug 30, 2006 at 2:27 pm
    Sep 29, 2006 at 8:30 am
  • Dear R-list, I'm trying to estimate the relative importance of 6 environmental variables in determining clam yield. To estimate clam yield a previous work used the function Yield = ...
    Simone VincenziSimone Vincenzi
    Aug 30, 2006 at 1:56 pm
    Sep 7, 2006 at 12:34 pm
  • Dear useRs, ================================================= Search for your R routines directly from Firefox! ================================================= Mango Solutions, providers of R and ...
    Romain FrancoisRomain Francois
    Aug 28, 2006 at 6:23 am
    Aug 30, 2006 at 11:13 am
  • Dear list, I know it must be obvious and I did my homework. (In fact I've RSiteSearched with keyword "remove AND library" but got timed out.(why?)....) How do I unload a library? I don't mean getting ...
    Horace TsoHorace Tso
    Aug 25, 2006 at 7:16 pm
    Aug 26, 2006 at 2:28 am
  • I recently coded a recursion algorithm in R and ir ran a few days without returning any result. So I decided to try a simple case of computing binomial coefficient using recusrive relationship ...
    Jason LiaoJason Liao
    Aug 24, 2006 at 8:05 pm
    Aug 25, 2006 at 2:43 pm
  • Hello, A made a xyplot using the lattice library in R (latest version). The publisher of our paper has requested: 1. all tick marks should point inwards instead of outwards. 2. All lines should be ...
    Piet BellPiet Bell
    Aug 24, 2006 at 3:53 pm
    Aug 25, 2006 at 8:14 am
  • I am new to R and am looking for a book that can help in learning to program in R. I have looked at the R website suggested books but I am still not sure which book best suite my needs. I am ...
    Raphael FraserRaphael Fraser
    Aug 24, 2006 at 12:09 pm
    Aug 24, 2006 at 5:43 pm
  • I'd like to pick every imbricated five character long subsets from a vector. I guess there is some efficient way to do this without loops... Here is a for-loop-version and a model for output ...
    KoneKone
    Aug 22, 2006 at 9:31 am
    Aug 22, 2006 at 6:29 pm
  • R Help Mailing List, I'd like to generate a plot that I could display and/or store it as e.g. jpeg. But unfortunately always a plotting window opens. Is it possible to prevent that? I tried the ...
    Lothar Botelho-MachadoLothar Botelho-Machado
    Aug 16, 2006 at 7:23 pm
    Aug 17, 2006 at 3:58 pm
  • I'm trying to read in some data from a .csv format and have come across the following issue. Here is a simple example for replication # A sample .csv format schid,sch_name 331-802-7081,School One ...
    Doran, HaroldDoran, Harold
    Aug 16, 2006 at 6:43 pm
    Aug 16, 2006 at 7:27 pm
  • Is there some (much) more efficient way to do this? VECTOR=c(3,2,4,5,5,3,3,5,1,6,6); NEWVECTOR=VECTOR[1]; for(i in 1:(length(VECTOR)-1)) { if((identical(VECTOR[i], VECTOR[i+1]))=�LSE){ ...
    Atte TenkanenAtte Tenkanen
    Aug 16, 2006 at 7:42 am
    Aug 16, 2006 at 12:09 pm
  • Dear R People: I want to use the "grep" command in UNIX/Linux to check some words from the dictionary. Let's say I use: grep dog /usr/share/dict/words and I get back bulldog dog dogged and so on. How ...
    Erin HodgessErin Hodgess
    Aug 10, 2006 at 4:40 am
    Aug 10, 2006 at 8:37 pm
  • Ein eingebundener Text mit undefiniertem Zeichensatz wurde abgetrennt. Name: nicht verf?gbar URL: https://stat.ethz.ch/pipermail/r-help/attachments/20060807/7f387274/attachment.pl
    Markus PreisetanzMarkus Preisetanz
    Aug 7, 2006 at 12:31 pm
    Aug 7, 2006 at 2:59 pm
  • I've tried several different ways to accomplish this, but as yet to no avail. My y-axis for a plot has a rather long label, and thus I have been using "/n" to break it into two lines. However, to ...
    Andrew KnissAndrew Kniss
    Aug 4, 2006 at 3:47 pm
    Aug 4, 2006 at 7:05 pm
  • Hello When I read a SPSS *.por file with read.spss everything after a umlaut is missing: Bg Stammzellenforschung Bb 863 862 Bb Neugestaltung des Finanzausgleichs 861 854 EV Postdienste f Bb 853 852 ...
    Thomas KusterThomas Kuster
    Aug 2, 2006 at 1:22 pm
    Aug 4, 2006 at 2:16 pm
  • Hello all, Consider the following problem: There are two vectors: rows <- c(1, 2, 3, 4, 5) columns <- c(10, 11, 12, 13, 14) I want to create a matrix with dimensions length(rows) x length(columns) ...
    Daniel GerlancDaniel Gerlanc
    Aug 3, 2006 at 2:10 pm
    Aug 3, 2006 at 2:36 pm
  • Is there a way to get the following code to include NA values where the coefficients are ?NA?? ((summary(reg))$coefficients) explanation: Using a loop, I am running regressions on several ?subsets? ...
    R userR user
    Aug 15, 2006 at 2:01 pm
    Sep 21, 2006 at 9:20 pm
  • Hi useRs - I was wondering if anyone out there can tell me where to find R-code to do mixes of tables and graphics. I am thinking of something similar to this ...
    Sam FergusonSam Ferguson
    Aug 31, 2006 at 11:49 pm
    Sep 2, 2006 at 9:29 am
  • I have developed a problem with the postscript output of plot on Windows. My code still works properly with R 2.3 but, with R 2.4, the white text on red background does not show up. It does, however, ...
    Kimpel, Mark WilliamKimpel, Mark William
    Aug 31, 2006 at 3:27 pm
    Sep 1, 2006 at 12:29 pm
  • Dear R People: I am trying to split a character vector into a set of individual letters: Ideal: x3 <- c("dog") "d" "o" "g" I tried the following: [[1]] [1] "dog" I know that this is incredibly ...
    Erin HodgessErin Hodgess
    Aug 29, 2006 at 10:25 pm
    Sep 1, 2006 at 12:19 pm
  • Hi list, I have a question about 'plot'. I am trying to plot values registered every month - or every other month. If i build a data.frame called mydata like this (as an example) jan 3 1 7 mar 2 4 2 ...
    Monica PisicaMonica Pisica
    Aug 31, 2006 at 4:30 pm
    Sep 1, 2006 at 1:00 am
  • Dear list Suppose I have the following vector: x <- c(3,4,2,5,6) Obviously, this sums to 20. Now, I want to have a second vector, call it x2, that sums to x where 5 <= x <= 20, but there are ...
    Doran, HaroldDoran, Harold
    Aug 30, 2006 at 1:49 pm
    Aug 30, 2006 at 3:11 pm
  • Dear all, I am still working with "list". If I have an empty list how can I remove from list data. Here is a toy example: x <- list(matrix(1:20, 5, 4),matrix(1:20, 5, 4),matrix(1:20, 5, ...
    Muhammad SubiantoMuhammad Subianto
    Aug 28, 2006 at 5:20 pm
    Aug 29, 2006 at 12:14 pm
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