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798 discussions - 2,583 posts

  • # Dear list, # I am an R-beginner and # spent the last days looking for a method to insert tables produced # with R into a word document. I thought about SPPS: copy a table from # an SPO-file and ...
    UkoenigUkoenig
    Feb 15, 2008 at 3:30 pm
    Feb 22, 2008 at 12:12 pm
  • Earlier today I sent a question to Frank Harrell as an R developer with whom I am most familiar. He suggested also that I put my questions to the list for additional responses. Next month I'll be ...
    Kathy GerberKathy Gerber
    Feb 15, 2008 at 7:53 pm
    Feb 27, 2008 at 5:00 pm
  • Hi all, I know this question has been asked in the past, but I am wondering if anyone running R on Linux has any guidance as to a text editor that works well with R. At the present time I am running ...
    Wade WallWade Wall
    Feb 2, 2008 at 3:06 am
    Feb 4, 2008 at 6:55 am
  • Dear readers, I would like to use GNUplot for the plots, but I can't find any information on how to do that. Have anyone tried that? =) Hugs, Louise
    Louise HoffmanLouise Hoffman
    Feb 29, 2008 at 8:37 pm
    Mar 3, 2008 at 7:18 pm
  • Hi the list I define a class A (slot a and b), a class C (slot c and d) and a class E that inherit from A and B. I define print(A) and print(B). For print(C), I would like to use both of them, but I ...
    CgenolinCgenolin
    Feb 29, 2008 at 7:02 pm
    Mar 27, 2008 at 4:26 pm
  • Hi, I read section 5, oop, of the R lang doc, and I am still not sure I understand how to build a class in R for oop. I thought that since I understand the oop syntex of Java and VB, I am wondering ...
    Tom soyerTom soyer
    Feb 5, 2008 at 1:21 pm
    Feb 6, 2008 at 6:47 pm
  • Hi All, I am scheduled to teach a graduate course on research methods in health sciences at a university. While drafting the course proposal, I decided to include a brief introduction to R, primarily ...
    Arin BasuArin Basu
    Feb 11, 2008 at 3:40 am
    Feb 12, 2008 at 5:22 pm
  • Hi everybody, I know this might be very off topic and it took me quite a while to up my courage to post this?. But I remember a thread some time ago about how we can find the packages we need to do ...
    Monica PisicaMonica Pisica
    Feb 4, 2008 at 2:34 pm
    Feb 5, 2008 at 7:27 pm
  • Hello, I'm trying to do cor(x1,x2) and I get the following error: Error in cor.default(x1, x2) : missing observations in cov/cor A few things: 1. I've used cor() many times and have never encountered ...
    Ken SpriggsKen Spriggs
    Feb 27, 2008 at 9:34 pm
    Feb 28, 2008 at 4:12 pm
  • Hello, I need to learn to use r-software for my PhD research project involving long timelines of radon radiation variations. I am using windows. I am currently discouraged by the use of r. I cannot ...
    RthoughtsRthoughts
    Feb 19, 2008 at 12:53 pm
    Feb 20, 2008 at 12:49 pm
  • Hi there, I want to generate different samples using the followindg code: g<-sample(LETTERS[1:2], 24, replace=T) How can I specify that I need 12 "A"s and 12 "B"s? Thank you, Judith Be a better ...
    Judith FloresJudith Flores
    Feb 5, 2008 at 6:52 pm
    Feb 7, 2008 at 8:30 pm
  • Hi, Does anyone know if R has a Lagrange multiplier (LM) test for ARCH effects for univariant time series? Thanks! -- Tom
    Tom soyerTom soyer
    Feb 2, 2008 at 3:42 am
    Feb 6, 2008 at 8:49 am
  • Hello, I am relatively new to R and learning its ins and outs. As part of a website I am building, I need to read and write csv files directly from an SQL database. Basically I want to convert R ...
    Tristan CaseyTristan Casey
    Feb 29, 2008 at 12:34 am
    Mar 1, 2008 at 6:25 am
  • Ultimately my aim is to get a plot of density faceted by 2 factors with a horizontal boxplot overlaid on each density plot in the grid to indicate summary stats. So I've been experimenting with ...
    Chris FriedlChris Friedl
    Feb 27, 2008 at 4:58 am
    Feb 29, 2008 at 8:36 am
  • Hello I need to plot a histogram, but insted of using bars, I'd like to plot the data points. I've been doing it like this so far: h <- hist(x, plot = F) plot(y = x$counts / sum(x$counts), x = ...
    Andre NathanAndre Nathan
    Feb 26, 2008 at 10:10 pm
    Feb 27, 2008 at 4:19 pm
  • Hi the list Is it possible to 'hide' a function from the user ? I cut a big fonction in sub function and I would like to hide the sub function, just like if I declare them in the big function ...
    Christophe GenoliniChristophe Genolini
    Feb 23, 2008 at 10:15 am
    Feb 25, 2008 at 12:13 am
  • Hello I have 2 data frames df1 and df2. I would like to create a new data frame new_df which will contain only the common rows based on the first 2 columns (chrN and start). The column score in the ...
    JosephJoseph
    Feb 10, 2008 at 7:38 pm
    Feb 15, 2008 at 6:38 am
  • Dear list, How can I add the mean and standard deviation to each of the boxplots using the example provided in the boxplot function? boxplot(len ~ dose, data = ToothGrowth, boxwex = 0.25, at = 1:3 - ...
    Tom CohenTom Cohen
    Feb 4, 2008 at 3:41 pm
    Jul 23, 2008 at 9:52 pm
  • Several people have given great advice on how to successfully use X11 on Mac to so we can use the dvi previewer to view latex() output from Hmisc. Now after a version upgrade of X11 and X11sdk we are ...
    Frank E Harrell JrFrank E Harrell Jr
    Feb 29, 2008 at 4:24 pm
    Mar 1, 2008 at 1:52 pm
  • Dear R-list, Does somebody know how can I read a HUGE data set using R? It is a hapmap data set (txt format) which is around 4GB. After read it, I need to delete some specific rows and columns. I'm ...
    Jorge Iván VélezJorge Iván Vélez
    Feb 28, 2008 at 5:03 am
    Feb 29, 2008 at 1:39 pm
  • I used ?image function to do that, like below : require(grDevices) # for colours x <- y <- seq(-4*pi, 4*pi, len=27) r <- sqrt(outer(x^2, y^2, "+")) image(x, y, r, col=gray((0:32)/32)) However my next ...
    Megh DalMegh Dal
    Feb 29, 2008 at 2:28 am
    Mar 15, 2008 at 7:28 pm
  • dear members, i would like to write a variable in a plot title (main="") but i don't know the right syntax:(...i tried a lot of different ways without success. here my example: y=30 z=33 for (i in ...
    Paul HammerPaul Hammer
    Feb 21, 2008 at 3:25 pm
    Feb 21, 2008 at 8:41 pm
  • Hello, I was wondering why the plot() command ignores the datatype when displaying axis labels. More specifically, if the data points are integers then the axis labels should intuitively also be ...
    StifflerStiffler
    Feb 19, 2008 at 5:17 pm
    Feb 20, 2008 at 8:26 am
  • I often want to temporarily modify the options() options, e.g. a <- seq(10000001, 10000001 + 10) # some wide object with.options <- function(..., expr) { options0 <- options(...) tryCatch(expr, ...
    Alistair GeeAlistair Gee
    Feb 12, 2008 at 5:45 pm
    Feb 13, 2008 at 6:35 pm
  • Hello R-community, It's been a week now that I am struggling with the implementation of a cox model in R. I have 80 cancer patients, so 80 time measurements and 80 relapse or no measurements ...
    Eleni ChristodoulouEleni Christodoulou
    Feb 12, 2008 at 1:35 pm
    Feb 13, 2008 at 2:30 pm
  • Hello, I am sure this must have been asked before, but my nabble search did not turn anything useful. Just pointer where to look will also be nice. So, I have the following data: x_test1 <- c(1:10) ...
    Tribo LaboyTribo Laboy
    Feb 1, 2008 at 1:59 am
    Feb 3, 2008 at 10:49 am
  • Hi R, I wanted to know how do we access the elements of a list. In particular, v=list(c(1,2,3,4,5),c(1,2,33,4,5),c(1,2,333,4,5),c(1,2,3333,4,5)) I want to access all the thirds items of the elements ...
    Shubha Vishwanath KaranthShubha Vishwanath Karanth
    Feb 1, 2008 at 9:05 am
    Feb 1, 2008 at 1:59 pm
  • I have a thirty thousand row data frame imported from excel and a 60,000 row data frame imported from excel. they share a common subset of the same data and I would like to combine the two into one ...
    Stephen sefickStephen sefick
    Feb 25, 2008 at 9:59 pm
    Feb 25, 2008 at 11:45 pm
  • Hello, This is the first time i'm trying to plot in R. I want to plot estimates of OR and their confidence limits, like a scatter plot: the vertical axis should be the estimated OR (with upper and ...
    Sigalit mangut-leibaSigalit mangut-leiba
    Feb 16, 2008 at 3:11 pm
    Feb 23, 2008 at 10:18 pm
  • Hi, all How to format and join strings ? For example, like following short python examples. ********* name1 = 'sample-plot' filename = '%s.png' % name1 inputdir = '/path/to/dir' ...
    Hyunchul KimHyunchul Kim
    Feb 19, 2008 at 12:29 pm
    Feb 19, 2008 at 4:36 pm
  • Hi all, Im a little bit confused concerning the effect() command, effects package. I have done several glm models with family=quasipoisson: model <-glm(Y~X+Q+Z,family=quasipoisson) and then used ...
    Gustaf GranathGustaf Granath
    Feb 16, 2008 at 4:43 pm
    Feb 18, 2008 at 9:28 am
  • Please, is it possible to pass an username and a password to source() to access code stored in restricted access web server? I know I can use commands like... but I am not able to find if it is ...
    [Ricardo Rodriguez] Your XEN ICT Team[Ricardo Rodriguez] Your XEN ICT Team
    Feb 13, 2008 at 12:55 am
    Feb 16, 2008 at 11:50 am
  • Hi all, We are facing a problem while introducing ourselves to Reshape package use. Melt seems to work fine, but cast fails when we use mean as fun.aggregate. As you see here, length and sum work ...
    [Ricardo Rodriguez] Your XEN ICT Team[Ricardo Rodriguez] Your XEN ICT Team
    Feb 12, 2008 at 8:23 am
    Feb 14, 2008 at 6:50 pm
  • Hi all, I am trying to draw a Kaplan-Meier curve and I found online that Kaplan - Meier estimates are computed with a function called km in the event package. Is there an update for that because when ...
    Eleni ChristodoulouEleni Christodoulou
    Feb 14, 2008 at 1:50 pm
    Feb 14, 2008 at 5:57 pm
  • Hi, First problem: Error in t.test.default(x) : data are essentially constant Second problem: Error in t.test.default(x) : not enough 'x' observations How to make t-test ignores this errors ?
    Ng StanleyNg Stanley
    Feb 12, 2008 at 8:09 am
    Feb 12, 2008 at 10:43 pm
  • I would like to create a new dataframe from the DateTime column of an existing dataframe and a numeric vector. When I do cbind(x[,1], y) the result is: [1,] 1199370600 12.500 [2,] 1199371200 69.375 ...
    Ken SpriggsKen Spriggs
    Feb 8, 2008 at 9:59 pm
    Feb 12, 2008 at 6:46 pm
  • I am aware of one (unofficial) guide to style for R programming: http://www1.maths.lth.se/help/R/RCC/ from Henrik Bengtsson. Can anyone provide further pointers to good style? Views on Bengtsson's ...
    David ScottDavid Scott
    Feb 11, 2008 at 10:47 am
    Feb 12, 2008 at 5:28 pm
  • Hi everybody, I have to recognize that my post certainly shows my lack of skills in really navigating the R web page .... i am surprised that only one or two persons wrote me about the "Task Views" - ...
    Monica PisicaMonica Pisica
    Feb 5, 2008 at 3:37 pm
    Feb 8, 2008 at 8:11 pm
  • Hello R-Cracks, I am using R 2.6.1 on a PowerBook G4. I would like to perform a discriminant function analysis. I found lda in MASS but as far as I understood, is it only working with explanatory ...
    Birgit LemckeBirgit Lemcke
    Feb 6, 2008 at 4:13 pm
    Feb 7, 2008 at 4:51 pm
  • Hi, I'm preetty new to R and seem to be having difficulties with writing a function that would change an array and keep the change after the function finishes its work. in other words I have an array ...
    Konrad BLOCHERKonrad BLOCHER
    Feb 5, 2008 at 3:49 pm
    Feb 5, 2008 at 11:26 pm
  • Dear List, I noticed that, when executing R without X11 (e.g. on a remote machine without X forwarding), when R needs to display a Tk dialog (e.g. when presenting the list of mirrors for ...
    JihoJiho
    Feb 5, 2008 at 2:55 pm
    Feb 5, 2008 at 8:11 pm
  • Hello, I'm trying to plot dayly evolution of the temperature over France from Global Forecast System files ("I'm trying" is the right expression...). akilonlat03 is the temperature for different ...
    Ptit_BleuPtit_Bleu
    Feb 18, 2008 at 3:59 pm
    Mar 4, 2008 at 4:07 pm
  • Hi, I have matrix of 300,000*115 (snps*individual). I ran the PCA on the covariance matrix which has a dimention oof 115*115. I have the first 100 individuals from group A and the rest of 15 ...
    SNNSNN
    Feb 26, 2008 at 9:11 pm
    Feb 29, 2008 at 3:47 am
  • Hi! I'm an R newbie and this should be a trivial problem, but I can't make it work and cannot find what I'm doing wrong in the literature. I entered the the command: table<-data.frame(x, ...
    CvandyCvandy
    Feb 26, 2008 at 9:30 pm
    Feb 27, 2008 at 10:34 pm
  • Hi, I have two loosely related questions which could make my live again a bit easier: 1) Is there a simple way to select a range of columns in a data frame using column names? I am thinking of ...
    Werner WernersenWerner Wernersen
    Feb 21, 2008 at 11:09 am
    Feb 27, 2008 at 6:15 pm
  • R folks, As an R novice, I struggle with the mystery of subsetting. Textbook and online examples of this seem quite straightforward yet I cannot get my mind around it. For practice, I'm using the ...
    Robert WaltersRobert Walters
    Feb 23, 2008 at 1:01 am
    Feb 23, 2008 at 7:52 pm
  • Hello, fellow R enthusiasts. Ok, I've been racking my brain about this small issue, and between searching the help archives and reading through the plot-related documentation, I can't figure out how ...
    Jessi BrownJessi Brown
    Feb 20, 2008 at 11:57 pm
    Feb 22, 2008 at 7:37 pm
  • Is there any implementation in R for finding the phase shift between two continuous signals. I would like to find the average phase shift for tow signals over two years. thanks Stephen -- Let's not ...
    Stephen sefickStephen sefick
    Feb 1, 2008 at 7:55 pm
    Feb 15, 2008 at 11:04 am
  • Hi, Given test <- matrix(c(1, 1,2,2), 2,2) t <- apply(test, 1, t.test) How can I obtain a table of p-values, confidence interval etc, instead of [[1]] One Sample t-test data: newX[, i] t = 3, df = 1, ...
    Ng StanleyNg Stanley
    Feb 5, 2008 at 9:01 am
    Feb 6, 2008 at 2:21 pm
  • Hi everybody, this is a warning more than a question. I noticed that seq produces approximate results: [1] 1.110223024625157e-16 I do not understand why 0.9 and 1 are correct (within some tolerance ...
    Eric ElgueroEric Elguero
    Feb 4, 2008 at 12:53 pm
    Feb 5, 2008 at 8:38 pm
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