Grokbase Groups R r-help June 2007

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778 discussions - 2,306 posts

  • As noted on the R-project web site itself ( - Manuals - R Data Import/Export ), it can be cumbersome to prepare messy and dirty data for analysis with the R tool itself. I've also ...
    Robert WilkinsRobert Wilkins
    Jun 8, 2007 at 12:01 am
    Jun 22, 2007 at 3:27 pm
  • Following up to some extent on Friday's discussion regarding the 'validation' of R, could I ask the list group's opinion on possible advantages of R over Splus from a pharma/devices perspective? I ...
    Jun 11, 2007 at 6:52 pm
    Jun 16, 2007 at 8:28 am
  • hi all: ecdf() is the empirical cumulative distribution function, but I need the INVERSE cumulative distribution. how can I calculate it? thank you in advance /salva
    Jun 4, 2007 at 10:18 am
    Jun 6, 2007 at 9:03 am
  • Dear All, discussing with a statistician of a pharmaceutical company I received this answer about the statistical package that I have planned to use: As R is not a validated software package, we ...
    Giovanni ParrinelloGiovanni Parrinello
    Jun 8, 2007 at 2:02 pm
    Jun 13, 2007 at 2:06 pm
  • Hello, (Power Book G4, Mac OS X, R 2.5.0) I would like to repeat the function range for 85 Vectors (V1-V85). I tried with this code: i<-0 + i<-i+1 + if (i<85) next + range (Vi, na.rm = TRUE) + if ...
    Birgit LemckeBirgit Lemcke
    Jun 28, 2007 at 9:47 am
    Jun 29, 2007 at 12:33 pm
  • Hello, I am using odesolve to simulate a group of people moving through time and transmitting infections to one another. In Matlab, there is a NonNegative option which tells the Matlab solver to keep ...
    Jeremy Goldhaber-FiebertJeremy Goldhaber-Fiebert
    Jun 6, 2007 at 4:17 pm
    Jun 14, 2007 at 9:03 am
  • Dear R Users, I hope that there is someone who has an experience with a problem that I describe below and will help me. I must buy new desktop computer and I'm wondering which processor to choose if ...
    Robert McFaddenRobert McFadden
    Jun 19, 2007 at 8:51 pm
    Jun 21, 2007 at 3:41 pm
  • I am new to using R and would appreciate some advice on which books to start with to get up to speed on using R. My Background: 1-C# programmer. 2-Programmed directly using IMSL (Now Visual ...
    Jun 12, 2007 at 9:27 pm
    Jun 15, 2007 at 12:51 am
  • I need to process some datasets where the configuration information was stored in .INI-like files, i.e., text files with sections like this: [Section1] var1=value1 var2=value2 [Section2] A=value3 ...
    Earl F. GlynnEarl F. Glynn
    Jun 12, 2007 at 4:47 pm
    Jun 14, 2007 at 7:57 am
  • Dear R Users, I recently posted an email on this list about the use of data.frame and overlaying multiple plots. Deepayan kindly indicated to me the panel.superposition command which worked perfectly ...
    Jun 21, 2007 at 3:57 am
    Jun 22, 2007 at 9:03 pm
  • Dear list, I need to read a big txt file (around 130Mb; 23800 rows and 49 columns) for downstream clustering analysis. I first used "Tumor <- read.table("Tumor.txt",header = TRUE,sep = "\t")" but it ...
    Ssls sdddSsls sddd
    Jun 7, 2007 at 1:22 am
    Jun 8, 2007 at 2:31 am
  • Folks, This must be a rather common problem with real life time series data but I don't see anything in the archive about how to deal with it. I have a time series of natural gas prices by flow ...
    Horace TsoHorace Tso
    Jun 22, 2007 at 6:44 pm
    Nov 7, 2007 at 8:22 pm
  • Dear all, I 'd like to keep the names of variables when calling them in a function. An example might help to understand my problem : The following function puts in a new data frame counts and percent ...
    David davDavid dav
    Jun 6, 2007 at 10:27 pm
    Aug 18, 2007 at 8:56 pm
  • Good morning to everybody, I have a problem : how can I import excel files in R??? thank you very much Erika Frigo Università degli Studi di Milano Facoltà di Medicina Veterinaria Dipartimento ...
    Erika FrigoErika Frigo
    Jun 25, 2007 at 12:47 pm
    Aug 11, 2007 at 5:58 am
  • I am trying to call a funtion within another function and I clearly am misunderstanding what I should do. Below is a simple example. I know lstfun works on its own but I cannot seem to figure out how ...
    John KaneJohn Kane
    Jun 28, 2007 at 7:03 pm
    Jun 29, 2007 at 9:46 pm
  • Hello everybody,I am having an error while compiling R-2.5.0 on Linux powerpc. This is what I see when I do a make: gcc -std=gnu99 -shared -L/usr/local/lib -o chull.o devNull.o ...
    Vivek MenonVivek Menon
    Jun 25, 2007 at 4:10 am
    Jun 25, 2007 at 3:19 pm
  • Hello, I'm currently using a simple plot to visualize some mean values. I'm having ~200 datapoints on the x-axis, each has 10 records. I'm currently plotting only the mean value of each of the ...
    Arne BrutschyArne Brutschy
    Jun 16, 2007 at 8:55 am
    Jun 22, 2007 at 8:07 pm
  • hello, are there functions giving the columns number and the rows number of a matrix? thanks. _____________________________________________________________________________
    Elyakhlifi mustaphaElyakhlifi mustapha
    Jun 18, 2007 at 1:04 pm
    Jun 18, 2007 at 2:04 pm
  • Philipp Benner reported a Debian bug report against r-cran-rpart aka rpart. In short, the issue has to do with how rpart evaluates a formula and supporting arguments, in particular 'weights'. A ...
    Dirk EddelbuettelDirk Eddelbuettel
    Jun 15, 2007 at 3:47 pm
    Jun 15, 2007 at 11:27 pm
  • Hi, I'm interested in using apply() with t.test() on a data.frame. Specifically, I'd like to use apply() to do the following: t.test(raw.sample[1,alive],raw.sample[1,dead]) ...
    Andrew YeeAndrew Yee
    Jun 3, 2007 at 9:48 pm
    Jun 4, 2007 at 9:41 pm
  • Is there a tidy way to get the names of objects passed to a function via the "..." argument? rbind/cbind does what I want: test.func1 <- function(...) { nms <- rownames(rbind(..., deparse.level=1)) ...
    Mike MeredithMike Meredith
    Jun 1, 2007 at 4:44 am
    Jun 1, 2007 at 11:42 pm
  • Dear R-users, I'm using Ubuntu dapper, which only have R of Version 2.2.1. Would anybody tell me how to install the latest version of R with Synaptic in Ubuntu dapper system. Thanks!
    Ruixin ZHURuixin ZHU
    Jun 29, 2007 at 6:39 am
    Jul 4, 2007 at 9:32 pm
  • Dear Latticer, I want to give individual colors to all elements in a simple stacked barchart. I know why the example below does not work (and it is a excellent default), but is there any workaround ...
    Dieter MenneDieter Menne
    Jun 12, 2007 at 5:57 pm
    Jun 22, 2007 at 7:55 pm
  • I haven't find any helpful thread. How can i calculate BIC and Hosmer-Lemeshow statistic for a logistic regression model. I have used glm for logistic fit. -- View this message in context ...
    Jun 19, 2007 at 11:59 am
    Jun 19, 2007 at 8:06 pm
  • Dear Listers: For example, if I have a .R source file which has more than one function, and I want to just load only one of the functions, how could I do that? (removing the rest after sourcing is ...
    Weiwei ShiWeiwei Shi
    Jun 18, 2007 at 1:54 pm
    Jun 18, 2007 at 9:00 pm
  • hi! i have a little problem: my data's matrix has 1093 rows and 3 columns. i'd like to extract each rows.. something like this: ht= my matrix Dt=(???)=a vector with t=1,2...1093 what can i do? thank ...
    Jun 13, 2007 at 7:49 am
    Jun 14, 2007 at 10:06 am
  • I am trying to clean up some dates and I am clearly doing something wrong. I have laid out an example that seems to show what is happening with the "real" data. The coding is lousy but it looks like ...
    John KaneJohn Kane
    Jun 7, 2007 at 9:17 pm
    Jun 9, 2007 at 10:50 am
  • En indlejret tekst med ukendt tegns?t er blevet fjernet... Navn: ikke tilg?ngelig Url:
    Rina MiehsRina Miehs
    Jun 5, 2007 at 9:33 am
    Jun 6, 2007 at 12:07 pm
  • Hi all, Assume I have a data frame with numerical and factor variables that I got through merging various other data frames and subsetting the resulting data frame afterwards. The number levels of ...
    Hilmar BergerHilmar Berger
    Jun 5, 2007 at 12:20 pm
    Jun 6, 2007 at 10:12 am
  • Hi folks, Is it possible to have Excel call a R function. If not, how about making Excel send off a command to call a R script and then read the result back into Excel. I know, I know, this should ...
    Horace TsoHorace Tso
    Jun 1, 2007 at 3:50 pm
    Jun 1, 2007 at 8:47 pm
  • Ein eingebundener Text mit undefiniertem Zeichensatz wurde abgetrennt. Name: nicht verf?gbar URL:
    Soare Marcian-AlinSoare Marcian-Alin
    Jun 6, 2007 at 2:48 pm
    Dec 1, 2008 at 6:51 pm
  • Dear all, I am new to R and statistics really in general. I am hoping that someone will be able to point me in the right direction and/or suggest a technique/package/reference that will help me with ...
    Andy WellerAndy Weller
    Jun 22, 2007 at 8:26 am
    Aug 20, 2007 at 2:22 am
  • Hello all, I have loading problem with XML_1.9 under 64 bit R2.3.1, which I got from XML_1.9 works fine under 32 bit R2.5.0. I thought that could be installation problem, ...
    Luo WeijunLuo Weijun
    Jun 27, 2007 at 10:11 pm
    Jul 9, 2007 at 7:54 pm
  • Dear Douglas and R-help, Does lme assume normal distribution AND equal variance among groups like anova() does? If it does, is there any method like unequal variance T-test (Welch T) in lme when each ...
    Shirley zhangShirley zhang
    Jun 28, 2007 at 1:55 am
    Jul 2, 2007 at 7:28 am
  • Software zur Erkennung von "Spam" auf dem Rechner hat die eingegangene E-mail als m??gliche "Spam"-Nachricht identifiziert. Die urspr??ngliche Nachricht wurde an diesen Bericht ...
    Christoph KrammerChristoph Krammer
    Jun 29, 2007 at 7:32 pm
    Jul 1, 2007 at 5:21 pm
  • Dear Colleagues, I am looking for a package or previous implemented R to subgroup and exaustively divide a vector of squence into 2 groups. For example: 1, 2, 3, 4 I want to have a group of 1, ...
    Jun 27, 2007 at 8:56 pm
    Jun 29, 2007 at 9:54 pm
  • Hello everyone, I have a variable with several categories and I want to convert this into dummy variables and do logistic regression on it. I used model.matrix to create dummy variables but it always ...
    Bingshan LiBingshan Li
    Jun 28, 2007 at 11:16 pm
    Jun 29, 2007 at 5:04 pm
  • I would like ask again, because I cant find the answer I have such problem: My data containing 4 variables (A,B,C,D) and are completed from 4 samples. Each of matrix is such: A B C D A 1 ab ac ad B ...
    Jun 17, 2007 at 10:19 am
    Jun 28, 2007 at 9:26 pm
  • Dear all, I would like to take out the values from one vector that are equal to the values in another vector. Example: a <- c(1,2,3,4,5,6,7,8,9) b <- c(3,10,20,5,6) b_noRepeats = c(10,20) So I would ...
    João FadistaJoão Fadista
    Jun 28, 2007 at 9:55 am
    Jun 28, 2007 at 12:21 pm
  • I have found a quite strange (to me) behaviour in Sweave. It only occurs in the following situation: 1. define a variable in one chunk 2. use it within a subsequent figure-generating chunk 3. delete ...
    D G RossiterD G Rossiter
    Jun 28, 2007 at 1:06 am
    Jun 28, 2007 at 12:18 pm
  • hello, are there functions to detecte outlying observations in samples? thanks. ___________________________________________________________________________
    Elyakhlifi mustaphaElyakhlifi mustapha
    Jun 19, 2007 at 9:29 am
    Jun 20, 2007 at 12:28 pm
  • Hi, I would like to minimize the value of x1-x2, x2 is a fixed value of 0.01, x1 is the quantile of normal distribution (0.0032,x) with probability of 0.7, and the changing value should be x. Initial ...
    Jun 18, 2007 at 4:01 pm
    Jun 19, 2007 at 3:19 pm
  • Hi, I start with an array of booleans: x <- c( TRUE, TRUE, TRUE, FALSE, FALSE, TRUE, TRUE, FALSE, TRUE ); I want to define an y <- f(x) such that: y <- c( 1, 2, 3, 0, 0, 1, 2, 0, 1 ); In other words, ...
    Feng, KenFeng, Ken
    Jun 19, 2007 at 9:11 am
    Jun 19, 2007 at 2:44 pm
  • Hi there. I am still trying to get the RSVGTipsDevice to work, yet I can not. I have copied the first example from RSVGTipsDevice documentation: library(RSVGTipsDevice) devSVGTips("C:\\svgplot1.svg", ...
    Jun 11, 2007 at 5:17 pm
    Jun 18, 2007 at 4:33 pm
  • Dear all; Is there any way to make this to work?: .x<-rnorm(50,10,3) .y<-.x+rnorm(50,0,1) X<-data.frame(.x,.y) colnames(X)<-c("Xvar","Yvar") Ytext<-"Yvar" lm(Ytext~Xvar,data=X) # doesn't run ...
    Pedro MardonesPedro Mardones
    Jun 14, 2007 at 7:14 pm
    Jun 16, 2007 at 4:54 pm
  • Hi, I wonder whether R can finish the following project: I want to make a chart to represent 10 genes. Each gene has orientation and length. Therefore, a gene can be represented by arrows. Can R be ...
    Scott flemmingScott flemming
    Jun 6, 2007 at 3:49 am
    Jun 15, 2007 at 11:38 pm
  • I am interested in R functions for the following integrals / sums (expressed best I can in text) - Normal: G_u(k) = Integration_{Lower limit=k}^{Upper limit=infinity} [(u -k) f(u) d(u)], where where ...
    Kavindra malikKavindra malik
    Jun 13, 2007 at 8:04 pm
    Jun 14, 2007 at 7:04 pm
  • Dear Listers: I have a couple of data frames to report and each corresponds to different condtions, e.g. conditions=c(10, 15, 20, 25). In this examples, four data frames need to be exported in a ...
    Weiwei ShiWeiwei Shi
    Jun 12, 2007 at 9:01 pm
    Jun 14, 2007 at 9:39 am
  • Dear R-list, I have encountered the following error message trying to update R packages: Warning in install.packages(update[instlib == l, "Package"], l, contriburl = contriburl, : 'lib' is not ...
    Stefan GrosseStefan Grosse
    Jun 7, 2007 at 10:00 am
    Jun 13, 2007 at 9:36 am
  • Hi to all, I found in the R-help archive how to calculate the p-value for a gee result: but there are two questions (I am afraid they are ...
    Jun 6, 2007 at 9:45 am
    Jun 12, 2007 at 6:43 am
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Prof Brian Ripley: 104 posts Gabor Grothendieck: 46 posts Hadley wickham: 43 posts John Kane: 41 posts Jim holtman: 38 posts Deepayan Sarkar: 36 posts Christophe Pallier: 33 posts Peter Dalgaard: 33 posts Uwe Ligges: 33 posts Marc Schwartz: 30 posts Ted Harding: 27 posts Duncan Murdoch: 25 posts Adschai: 22 posts Benilton Carvalho: 20 posts Greg Snow: 20 posts Stefan Grosse: 20 posts Birgit Lemcke: 19 posts Frank E Harrell Jr: 19 posts Stephen Tucker: 19 posts RAVI VARADHAN: 18 posts
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