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387 discussions - 1,137 posts

  • I've searched the doc for insert and could not find the way to do the following, hope someone can help: Let's say we have a vector: [1] "1" "2" "3" "5" "6" "3" and we want to insert a "7" after any ...
    Agustin LoboAgustin Lobo
    Feb 17, 2003 at 1:51 pm
    Feb 20, 2003 at 3:13 am
  • Dear R helpers, is there a function or way within R to solve A'A=S for A, where all matrices have p x p order and S is a variance-covariance matrix? Thank you, Ralf Engelhorn
    Ralf EngelhornRalf Engelhorn
    Feb 13, 2003 at 7:47 pm
    Feb 19, 2003 at 12:10 am
  • This is my first post to this list so I suppose a quick intro is in order. I've been using SPLUS 2000 and R1.6.2 for just a couple of days, and love S already. I'm reading MASS and also John Fox's ...
    J+RhelpJ+Rhelp
    Feb 14, 2003 at 6:38 am
    Feb 18, 2003 at 4:43 pm
  • Please help me. I used '--enable-R-shlib' as the argument for 'configure'. After the installation, I want to check whether R is built as a shared library since I need to assure this for installing ...
    Bai YanBai Yan
    Feb 25, 2003 at 5:35 am
    Mar 2, 2003 at 10:48 pm
  • Hello everyone, I am a new beginner and I want to know how to use Splus object in R and how to convert each other? Thanks a lot. Helen Yang
    Huiqin YangHuiqin Yang
    Feb 5, 2003 at 8:38 pm
    Feb 26, 2003 at 12:26 am
  • Hello, I've been working on a procedural language handler for PostgreSQL, that allows R to be used to write PostgreSQL functions. At this point, I think PL/R is ready for wider testing and use. If ...
    Joe ConwayJoe Conway
    Feb 17, 2003 at 9:17 pm
    Feb 19, 2003 at 4:11 pm
  • Hi, is there a way to analyze subpopulations (e.g. women over 50, those who answered "yes" to a particular question) in a survey using Survey package? Other packages (e.g. Stata, SUDAAN) do this with ...
    TyagiAnupamTyagiAnupam
    Feb 19, 2003 at 10:40 pm
    Feb 24, 2003 at 6:59 pm
  • Hi everybody, I a, trying to use R as a pipe like this: cat inputData | R --silent RCommandFile outputData The RCommandFile would contain something like readLines(stdin()). I have tryed various ...
    Alberto GobbiAlberto Gobbi
    Feb 21, 2003 at 5:17 pm
    Feb 24, 2003 at 4:26 pm
  • Hello. Sorry for the elementary post. I've looked through the documentation, but can't seem to find a function which allows one to extract the position of an element within a list...for example the ...
    Jason BondJason Bond
    Feb 13, 2003 at 10:46 pm
    Feb 14, 2003 at 3:39 pm
  • Is anyone using R with postgres? I'd like to do so, but cannot seem to find any reasonable explanation of how to do so. Joshua Gramlich Chicago, IL
    Joshua GramlichJoshua Gramlich
    Feb 11, 2003 at 9:55 pm
    Feb 12, 2003 at 9:03 am
  • Another question I have is what is the best plotting to use if I want to get something like a waveform produced from points. Thanks. Elena Zheleva
    Hi from ZynnelHi from Zynnel
    Feb 26, 2003 at 7:51 am
    Apr 12, 2003 at 10:17 pm
  • Dear R user, I am running R under Windows 2000. I am looking for a routine for importing - shape files (ESRI) into R - dbase files (FOXPRO) into R and I am looking for time-space models for ...
    Ekkehardt AltpeterEkkehardt Altpeter
    Feb 13, 2003 at 1:02 pm
    Feb 18, 2003 at 11:13 pm
  • Hello everybody I have a generic problem which the following toy function illustrates: f <- function(n) { if(abs(n) < pi) { return(TRUE) } else { return(FALSE) } } I want it to return TRUE if ...
    Robin HankinRobin Hankin
    Feb 13, 2003 at 11:38 pm
    Feb 14, 2003 at 12:52 am
  • Hi all, Here's a curosity I ran into since upgrading to 1.6.2 (precompiled for Windows). When using the chm help I get the following warning. I saw a recent post regarding this as a new warning ...
    Sundar Dorai-RajSundar Dorai-Raj
    Feb 6, 2003 at 8:01 pm
    Feb 7, 2003 at 12:53 pm
  • Hello there, I just changed to FreeBSD platform, and want to install R on it. I use FreeBSD 5.0 and install nearly all packages on the machine. When I use ports to install R, (cd ...
    Peng ZhangPeng Zhang
    Feb 9, 2003 at 5:34 am
    Mar 6, 2003 at 11:38 am
  • Hi, What's the best way of dropping leading or trailing blanks from a character string? The only thing I can think of is using sub() to replace blanks with null strings, but I don't know if there is ...
    Douglas GroveDouglas Grove
    Feb 19, 2003 at 10:03 pm
    Feb 21, 2003 at 10:17 am
  • Dear R users, I have some R code and trying to understand it. I have a vector myvec [1] 24 24 10 10 10 10 10 44 44 44 45 45 45 54 54 54 54 42 42 and a scaler myscaler [1] 10 The following function ...
    SkayisSkayis
    Feb 19, 2003 at 3:58 am
    Feb 19, 2003 at 9:10 pm
  • I'm looking for ideas for creating high-quality plots for use in projected presentations (powerpoint, etc) --- ideally high-quality png, jpg, bmp. The graphics produced using the postscript device ...
    Falcon, SethFalcon, Seth
    Feb 19, 2003 at 2:40 am
    Feb 19, 2003 at 5:07 pm
  • hi, for working with the simseg/acm approach i need multilm and it seems that the last version is 0.1-4.tar ? What's wrong in the description file, if i attempt install the package ? ...
    Christian SchulzChristian Schulz
    Feb 10, 2003 at 10:27 pm
    Feb 11, 2003 at 4:02 pm
  • Hey, All In principal component analysis (PCA), we want to know how many percentage the first principal component explain the total variances among the data. Assume the data matrix X is zero-meaned, ...
    Feng ZhangFeng Zhang
    Feb 6, 2003 at 7:04 pm
    Feb 8, 2003 at 7:47 pm
  • To R-users I have been using R for many years and I am very happy with it. One thing puzzles me. Graphic postscript files tend to become quite big, much bigger than corresponding splus postscript ...
    Helgi TomassonHelgi Tomasson
    Feb 5, 2003 at 10:27 am
    Feb 6, 2003 at 12:38 pm
  • is there any way i can use R as a tool for scripts in unix, as wotan[hrue]$ cat example.R #!/usr/bin/R x=1 havard -- Havard Rue Department of Mathematical Sciences Norwegian University of Science and ...
    Havard RueHavard Rue
    Feb 5, 2003 at 2:32 pm
    Feb 6, 2003 at 12:46 am
  • A colleague of mine would like to know how seconds since 1970 (represented as integers) can be converted to date-time objects? thanks -- John Bjornar Bremnes Norwegian Meteorological Institute ...
    John Bjornar BremnesJohn Bjornar Bremnes
    Feb 3, 2003 at 4:36 pm
    Feb 3, 2003 at 7:43 pm
  • Hello, I wonder if someone could send me suggestions on how to solve the following problem: I have a vector of an arbitrary size (ex. data<-c(10,10,11,10,12,11,10,12,11,11,10,11)) and use the table ...
    Patrik WaldmannPatrik Waldmann
    Feb 28, 2003 at 12:10 pm
    Mar 3, 2003 at 6:18 pm
  • Hi! I've done lme-analysis with R; three fixed factors, one random, and the dependent variable is continous. The results print out only the F-values and p-values. I'd need also the mean squares. I ...
    Mona RiihimakiMona Riihimaki
    Feb 28, 2003 at 8:20 am
    Feb 28, 2003 at 7:23 pm
  • Hi, I am trying to use "read.pnm" from the package "pixmap" to read more than 10 thousand image files in "mydir". print(i) x <- read.pnm(file.list[i]) } In the beginning it was fine. But after ...
    Jonathan Q. LiJonathan Q. Li
    Feb 28, 2003 at 1:04 am
    Feb 28, 2003 at 9:03 am
  • Dear all I have a function in which I would like to change some values to NA according to some condition. dropout<-function(y, nahrúLSE,...) { <some stuff for computing an index if (nahr) ...
    Petr PikalPetr Pikal
    Feb 21, 2003 at 2:36 pm
    Feb 25, 2003 at 1:29 pm
  • hi, this is a very basic question -- sorry for posing it: how can i force R to print 0.0001 instead of 1e-04??? .--------------------. `--------------------' i tried the functions format, formatC, ...
    Thomas GerdsThomas Gerds
    Feb 24, 2003 at 6:02 pm
    Feb 25, 2003 at 10:49 am
  • Hi, I'm trying to construct a legend which has four lines of text and associated symbols. The first two symbols need to be normal lines which vary only in colour. The second two symbols should have ...
    Jeremy Z ButlerJeremy Z Butler
    Feb 24, 2003 at 2:31 am
    Feb 25, 2003 at 10:13 am
  • Hello. I was wondering how one can find the exact values of the range of an axis within a plot. In xlispstat it was (send plot :range 0). Thanks much, Jason
    Jason BondJason Bond
    Feb 24, 2003 at 8:11 pm
    Feb 24, 2003 at 8:41 pm
  • I am just about working through Faraways excellent tutorial "practical regression and ANOVA using R" on page 24 he makes the x matrix: x <- cbind(1,gala[,-c(1,2)]) how can I understand this ...
    Christoph LehmannChristoph Lehmann
    Feb 22, 2003 at 5:50 pm
    Feb 24, 2003 at 8:23 pm
  • Dear R-users, I have two outliers related questions. I. I have a vector consisting of 69 values. mean = 0.00086 SD = 0.02152 The shape of EDA graphics (boxplots, density plots) is heavily distorted ...
    Rado BonkRado Bonk
    Feb 20, 2003 at 6:34 pm
    Feb 21, 2003 at 10:10 am
  • Hi, Any hints on how I would generate the means of each 5 number group in a column of numbers in data.frame form. i.e. get mean of first five in column and then mean of second five in column etc ...
    Jeremy Z ButlerJeremy Z Butler
    Feb 20, 2003 at 11:45 pm
    Feb 21, 2003 at 1:12 am
  • Dear R-Users, I need to find a smooth function f() and coefficients a_i that give the best fit to y ~ a_0 + a_1*f(x_1) + a_2*f(x_2) Note that it is the same non-linear transformation f() that is ...
    Vadim OgranovichVadim Ogranovich
    Feb 19, 2003 at 12:35 am
    Feb 20, 2003 at 3:04 am
  • Dear All: what R function should be used for logit regression? glm()? And, more importantly, is there a function that would calculate the *probability of Y given X in the logit framework* (say for ...
    Stan MarkusStan Markus
    Feb 15, 2003 at 9:55 pm
    Feb 17, 2003 at 7:17 pm
  • Hi, I would like to know if there is a way to change a vector of arbitrary size to make it fits the nearest upper size multiple of a power of 2. -- Cordialy ---------------------------------------- ...
    Poizot EmmanuelPoizot Emmanuel
    Feb 14, 2003 at 9:56 am
    Feb 16, 2003 at 3:17 am
  • Being relatively new to R, I want to use R in connection with a MySQL database. After installing (apparently sucessfully) the package RMySQL (R Version 1.6.2) the result is as follows: Error ...
    Jörg Peter BareselJörg Peter Baresel
    Feb 7, 2003 at 3:05 pm
    Feb 15, 2003 at 7:22 pm
  • Hi R-users: I have a data formatting question. I have a data set that looks something like this: foo.dat <- cbind(c(NA, 1, 2, 3, 4, 5), c(NA, NA, 0, 10 ,20, 30)) What I have: [,1] [,2] [1,] NA NA ...
    Tim SharacTim Sharac
    Feb 12, 2003 at 9:50 pm
    Feb 13, 2003 at 8:08 pm
  • Dear, I'm looking for some examples on OO programming in R. I have the programming manual with explanation on UseMethod and NextMethod but I miss some practical examples to get me going (I hope). I ...
    Kris NackaertsKris Nackaerts
    Feb 13, 2003 at 5:02 pm
    Feb 13, 2003 at 7:18 pm
  • Hola! Sorry for going off-topic, but here are something I found on the web yesterday - an explanation of statistics in poetic form: First, you see your data for what they seem to be Then, you ask ...
    Kjetil brinchmann halvorsenKjetil brinchmann halvorsen
    Feb 12, 2003 at 5:50 pm
    Feb 13, 2003 at 12:34 am
  • Hi all, After a short hiatus away from R I have found that it's changed a bit. I used to keep a definition of .First in .Rprofile that did a couple of things on startup (load a couple of libraries) ...
    David RichmondDavid Richmond
    Feb 6, 2003 at 3:57 am
    Feb 6, 2003 at 7:21 pm
  • Hello, I'm somewhat new to R. I've searched the archive for the last year and tried to consult the manual pages for the following problem, but did not find an answer. I want to sort an array by the ...
    Mark G OrrMark G Orr
    Feb 4, 2003 at 5:51 pm
    Feb 4, 2003 at 6:33 pm
  • Dear all, I have a function MYFUN which depends on 3 positive parameters TETA[1], TETA[2], and TETA[3]; x belongs to [0,1]. I integrate the function over [0,0.1], [0.1,0.2] and [0.2,0.3] and want to ...
    Remigijus LapinskasRemigijus Lapinskas
    Feb 28, 2003 at 9:55 am
    Mar 2, 2003 at 5:49 pm
  • I hope you could help me with this. I have a dataframe with 5 columns, the first column determining the X values, and the rest four determining four separate Y vectors. How can I plot them on the ...
    Hi from ZynnelHi from Zynnel
    Feb 26, 2003 at 7:42 am
    Mar 1, 2003 at 10:25 pm
  • Dear R users, I get the following (I think puzzling) result when doing the following: [[1]] [1] 3 [[2]] [1] 5 I would have expected the result to be: [[1]] [1] 3 [[2]] NULL [[3]] [1] 4 as in the ...
    Makram TalihMakram Talih
    Feb 28, 2003 at 4:07 am
    Feb 28, 2003 at 8:27 am
  • Hi all, the option type="h" in plot() makes nice vertical (histogram-like) lines. Is there a way to make similar, horizontal lines? I can of course resort to using lines() multiple times, but i was ...
    Remko DuursmaRemko Duursma
    Feb 26, 2003 at 10:04 pm
    Feb 27, 2003 at 7:05 pm
  • hi, I have a question about error-handling. Say I want to do a simulation 100 times, each experiment involves inverting a matrix. Occasionally the matrix is close to singularity, R gives an error ...
    Ximing wuXiming wu
    Feb 24, 2003 at 10:54 am
    Feb 24, 2003 at 11:12 am
  • Dear R users, Is there the possibitily in R under X11 to get (after typing help(...) command) separate help window, as it is in Windows version? Best wishes, ================================= Dr ...
    Alexey ShipunovAlexey Shipunov
    Feb 19, 2003 at 7:33 pm
    Feb 20, 2003 at 11:04 am
  • Hello, I want to estimate parameters of the model y=a/x with x=1:10 and y=3/x. I tested the NLS function. Could you tell me why it doesn't converge ? Regards, Gr?gory Benmenzer Error in nls(y ~ a/x, ...
    Gregory BENMENZERGregory BENMENZER
    Feb 10, 2003 at 10:18 am
    Feb 19, 2003 at 3:35 pm
  • Hi, I am performing glm with binomial family and my data show slight overdispersion (HF<1.5). Nevertheless, in order to take into account for this heterogeneity though weak, I use F-test rather than ...
    Hardouin LoïcHardouin Loïc
    Feb 18, 2003 at 12:09 pm
    Feb 19, 2003 at 12:41 pm
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374 users for February 2003

Ripley: 100 posts Spencer Graves: 31 posts Uwe Ligges: 31 posts Liaw, Andy: 29 posts Marc Schwartz: 29 posts Thomas Lumley: 25 posts Peter Dalgaard BSA: 23 posts John Fox: 18 posts Sundar Dorai-Raj: 17 posts Frank E Harrell Jr: 14 posts Martin Maechler: 14 posts Douglas Bates: 12 posts Kjetil brinchmann halvorsen: 12 posts Roger Peng: 12 posts Feng Zhang: 11 posts M.Kondrin: 11 posts Deepayan Sarkar: 10 posts Dirk Eddelbuettel: 10 posts Jason Turner: 10 posts Jerome Asselin: 10 posts
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