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964 discussions - 3,294 posts

  • Dear List, One persistent feedback I am getting to people who are newly introduced to R ( especially in this cost cutting recession) is - 1) The website looks a bit old. While the current website ...
    Ajay ohriAjay ohri
    Feb 2, 2009 at 2:52 am
    Feb 13, 2009 at 12:19 am
  • If anyone wants to see a prime example of how inefficient it is to program in SAS, take a look at the SAS programs provided by the US Agency for Healthcare Research and Quality for risk adjusting and ...
    Frank E Harrell JrFrank E Harrell Jr
    Feb 26, 2009 at 10:57 pm
    Mar 4, 2009 at 3:55 pm
  • Hi everybody, I use for the moment "#" at the begining of each line for comments. Is there any possibility to comment more than one line, like something which shows the beggingng and the end of the ...
    Mihai MirautaMihai Mirauta
    Feb 11, 2009 at 8:32 am
    Feb 16, 2009 at 9:45 pm
  • Dear List, I registered for the useR conference in Rennes today; half an hour after the confirmation I received a first "requested newsletter" from a company selling a product named "Inference for ...
    Dieter MenneDieter Menne
    Feb 24, 2009 at 1:06 pm
    Mar 6, 2009 at 7:16 am
  • In another thread on this list, various wild allegations have been made, relating to the New York Times article on R. I object both to the subject line and to the content of several of the messages, ...
    John MaindonaldJohn Maindonald
    Feb 3, 2009 at 11:00 pm
    Feb 5, 2009 at 4:10 pm
  • Dear All- I have been given some Rcode that was written using a Linux OS, but I use Windows-based R. The person that is giving it to me said that it needs to run on a Linux system. Does anyone have ...
    Sherri HeckSherri Heck
    Feb 26, 2009 at 1:08 am
    Feb 26, 2009 at 8:27 pm
  • Is there a general method for finding out what "something" is in R please. I have a list (bycontract) that; [1] TRUE And an element of this list would be this say; [1] 22 3.2 -8 -17 49 3 [7] 30 -3 ...
    Feb 9, 2009 at 10:13 am
    Feb 26, 2009 at 10:53 am
  • I am appealing to the general collective wisdom of this list in respect of a statistics (rather than R) question. This question comes to me from a friend who is a veterinary oncologist. In a study ...
    Rolf TurnerRolf Turner
    Feb 10, 2009 at 9:33 pm
    Feb 15, 2009 at 5:00 pm
  • I was wondering why the following doesn't work: one two 1 2 [1] "two" one two 1 2 I must not be understanding some basic concept here. Why doesn't the 2nd name change to "too"? also unrelated: if I ...
    Fuchs IraFuchs Ira
    Feb 25, 2009 at 4:36 am
    Feb 25, 2009 at 9:48 am
  • I am running an R script with Tinn-R ( and I get the error message Error in source(.trPaths[4], echo = TRUE, max.deparse.length = 150) : object ".trPaths" not found Any solutions? Thank you ...
    Feb 28, 2009 at 2:18 am
    Sep 30, 2011 at 9:12 pm
  • hi i am creating some variables from same data, but somewhere is different rouding. look: P = abs(fft(d.zlato)/480)^2 hladane= sort(P,decreasing=T)[1:10]/480 pozicia=c(0,0,0,0,0) for (j in 1:5){ for ...
    Feb 27, 2009 at 10:32 am
    Apr 28, 2009 at 1:53 pm
  • Hi, I am trying to create a vector of length 10 (say), wherein each element will be average of random sample of size 100, from a distribution, say Normal. Can anyone please tell me without creating a ...
    Feb 16, 2009 at 11:59 am
    Feb 17, 2009 at 11:11 am
  • Hi, I'm trying to take a matrix such as [,1] [,2] [,3] [,4] [,5] [1,] 2 7 2 7 9 [2,] 10 10 6 8 6 [3,] 1 9 7 2 0 and generate a new matrix which contains only the unique values in each row: [,1] [,2] ...
    Jason ShawJason Shaw
    Feb 12, 2009 at 7:31 pm
    Feb 13, 2009 at 6:27 pm
  • I'm writing a program that will tell me whether I should wear a coat, so I'd like to be able to download daily weather forecasts and daily reports of recent past weather conditions. The NOAA has very ...
    Thomas LevineThomas Levine
    Feb 26, 2009 at 8:47 pm
    Feb 27, 2009 at 7:13 pm
  • Have the counter function in R ? if we use the software SAS /*** SAS Code **************************/ data tmp(drop= i); retain seed x 0; do i = 1 to 5; call ranuni(seed,x); output; end; run; data ...
    Feb 25, 2009 at 12:25 pm
    Feb 26, 2009 at 1:52 pm
  • By any chance is any one aware of a website, book, paper, etc. or combinations of those sources that show plots of different distributions? After reading a pretty good whitepaper I became aware of ...
    Jason RupertJason Rupert
    Feb 12, 2009 at 6:04 pm
    Feb 16, 2009 at 6:51 pm
  • Dear Colleagues, When I try to install Rcmdr the following happens: ---------------------------------- Error in structure(.External("dotTclObjv", objv, PACKAGE = "tcltk"), class = "tclObj") : [tcl] ...
    Lawrence HanserLawrence Hanser
    Feb 10, 2009 at 10:00 pm
    Feb 12, 2009 at 6:52 am
  • Just wondering if there's an R package which does tricks similar to what TK!Solver does. TK!Solver, for those not lucky enough to have found it, basically allows one to define a bunch of equations, ...
    Carl WitthoftCarl Witthoft
    Feb 8, 2009 at 8:11 pm
    Feb 11, 2009 at 9:25 am
  • I would like to have a function which gets data, does a calculation and prints a result and then waits some number of seconds and repeats. If I use Sys.sleep, the execution is pausing but the ...
    Fuchs IraFuchs Ira
    Feb 9, 2009 at 10:07 pm
    Feb 10, 2009 at 3:43 pm
  • Hi guys, I hit on a problem when I use rgl. Could you try to run the code here in this link and see why the first persp3d gives a red bounding box and the second shows black? ...
    Bo ZhouBo Zhou
    Feb 28, 2009 at 9:20 pm
    Mar 3, 2009 at 7:40 pm
  • Hi all, I am trying to run a two factor anova, but one of the factors is a random factor, now I am also running in SPSS and it seems its dividing by the wrong term to get the appropriate F term. here ...
    Joe KingJoe King
    Feb 14, 2009 at 6:46 pm
    Feb 28, 2009 at 9:58 am
  • Hi all, I've managed to get JAGS working on my Ubuntu Hardy Linux with a 32-bit computer and AMD processors using R 2.8.1. JAGS is great. I've read that JAGS is the fastest, but that hasn't been my ...
    Paul Heinrich DietrichPaul Heinrich Dietrich
    Feb 17, 2009 at 2:45 pm
    Feb 21, 2009 at 2:25 pm
  • Hello, I tried to turn lists into vectors and then bind them together in order to create a dataframe but if, after this, I try to use the function write.table I get the following error message: Error ...
    Feb 20, 2009 at 7:56 am
    Feb 20, 2009 at 9:26 pm
  • Hello, everybody. A student asked me a howto question I can't answer. We want the length of the drawn axes to fill the full width and height of the plot, like so: ---|----------------- However, when ...
    Paul JohnsonPaul Johnson
    Feb 13, 2009 at 7:25 pm
    Feb 16, 2009 at 1:15 pm
  • Dear R, I have two questions: 1, Why both R and Matlab give 0*Inf==NaN? To my knowledge, it should be zero mathematically. Am I right? 2, I need to calculate e.g. exp(a)/(exp(b)+c), where both a and ...
    Feng LiFeng Li
    Feb 11, 2009 at 10:40 am
    Feb 12, 2009 at 7:23 am
  • Hi, Ive been trying to find a function that will allow me to pull out a number between a minimum and maximum threshold. I want a random decimal number between, for example, 0 and 0.5 or 0 and 0.7 ...
    Feb 9, 2009 at 2:40 pm
    Feb 10, 2009 at 10:18 am
  • Hi, I'm new in the mailing list but I would appreciate if you could help me with this: I have a big matrix from where I need to delete specific rows. The second entry on these rows to delete should ...
    Laura Rodriguez MurilloLaura Rodriguez Murillo
    Feb 6, 2009 at 3:26 pm
    Feb 9, 2009 at 10:17 am
  • Hi, Both operators <- and = can be used to make an assignment. My question is: Is there a semantic difference between these two? Some time ago, I remember I have read that because of some reason, one ...
    Thomas MangThomas Mang
    Feb 21, 2009 at 3:30 pm
    Feb 23, 2009 at 11:53 am
  • Dear listers, I would like to compare the levels of a factor with 8 age categories (0,10] (10,20] (20,30] (30,40] (40,50] (50,60] (60,70] (70,90] (however, the factor has not been ordered yet). The ...
    Patrick GiraudouxPatrick Giraudoux
    Feb 16, 2009 at 4:22 am
    Feb 17, 2009 at 4:35 pm
  • Hi, I have to recognize that i don't fully understand the aggregate function, but i think it should help me with what i want to do. xveg is a data.frame with location, species, and total for the ...
    Monica PisicaMonica Pisica
    Feb 12, 2009 at 6:58 pm
    Feb 13, 2009 at 1:51 pm
  • The R FAQ is very helpful about installing R on various Linuxes, but doesn't seem to discuss the advantages of one distribution over another. I am new to Linux (though not to Unix!), and would ...
    Stavros MacrakisStavros Macrakis
    Feb 8, 2009 at 10:27 pm
    Feb 9, 2009 at 11:45 am
  • I'm sure there is a more general way to ask this question but how do you use the elements of a character vector as names of objects in an expression? For example, say you have: a = c(1,3,5,7) b = ...
    Fuchs IraFuchs Ira
    Feb 5, 2009 at 10:10 pm
    Feb 6, 2009 at 7:27 am
  • I am using rpart to build a model for later predictions. To save the prediction across restarts and share the data across nodes I have been using "save" to persist the result of rpart to a file and ...
    Feb 3, 2009 at 10:24 am
    Feb 4, 2009 at 8:23 pm
  • Hello, I am trying to draw a key inside a single panel in a lattice xyplot. The panel function uses panel.number() to use a slightly different style for one of the panels. Once inside than panel I am ...
    Iago MosqueiraIago Mosqueira
    Feb 4, 2009 at 4:21 pm
    Feb 3, 2010 at 11:21 pm
  • Hi, I have a vector that look like this: V1 V2 V3 V4 V5 V6 0.00377467 0.00377467 0.00377467 0.00380083 0.00380083 0.00380083 V7 V8 V9 V10 V11 V12 0.00380959 0.00380959 0.00380959 0.00380083 ...
    Gundala ViswanathGundala Viswanath
    Feb 19, 2009 at 6:47 am
    Feb 19, 2009 at 2:40 pm
  • Hello, suppose I have a data frame: id age 1 NA NA 2 NA NA 3 NA NA 4 NA NA 5 NA NA Then I attach the data frame: ls.pos...2. 1 age 2 id But this leads to a bogus object... how can I rescue the ...
    David CrollDavid Croll
    Feb 10, 2009 at 11:02 am
    Feb 10, 2009 at 2:38 pm
  • Dear R-users, The sasxport.get function (from the Hmisc package) automatically defines the class of imported variables. I have noticed that the class of theoretically numeric variables is simply ...
    Sebastien BihorelSebastien Bihorel
    Feb 3, 2009 at 9:13 pm
    Feb 5, 2009 at 5:56 pm
  • Hi all, with PowerPoint and ThinkCell one can draw something they call waterfall chart and it looks like this: http://www.think-cell.com/products/images/waterfall.gif I found discussions on waterfall ...
    Feb 3, 2009 at 9:47 am
    Jan 12, 2011 at 9:43 am
  • I have data on a regular grid in the format: x y z data. I would like to be able to plot them in 3d kind of like a volume or a mesh with colors. Is that possible in R and how? Thanks
    Kapo coulibalyKapo coulibaly
    Feb 20, 2009 at 3:50 pm
    Mar 5, 2009 at 8:51 pm
  • Dear friends, I have to use a very large matrix. Something of the sort of matrix(80000,80000,n) .... where n is something numeric of the sort 0.xxxxxx I have not found a way of doing it. I keep ...
    Feb 25, 2009 at 11:04 am
    Mar 2, 2009 at 1:52 pm
  • Hi I want to install some versions of R simultaneously from source on a computer (running Linux). Some programs have an option to specify a suffix for the executable (eg R would become R-2.7.2 when ...
    Rainer M KrugRainer M Krug
    Feb 27, 2009 at 7:34 am
    Feb 27, 2009 at 1:04 pm
  • This is a seemingly simple problem - hopefully someone can help. Problem: we have two integers. We want (1) all the common factors, and (2) all the possible products of these factors. We know how to ...
    Fox, GordonFox, Gordon
    Feb 24, 2009 at 2:52 am
    Feb 25, 2009 at 5:20 pm
  • Hello dear R mailing list members. I have recently became curious of the possibility applying model selection algorithms (even as simple as AIC) to regressions of large datasets. I searched as best ...
    Tal GaliliTal Galili
    Feb 21, 2009 at 1:36 pm
    Feb 22, 2009 at 1:56 pm
  • Hello, My problem is that I would like to merge multiple files with a common column but merge accepts only two data.frames to merge. In the real situation, I have 26 different data.frames with a ...
    Lauri NikkinenLauri Nikkinen
    Feb 19, 2009 at 10:21 am
    Feb 19, 2009 at 2:24 pm
  • Hi folks! Does anyone know why I might see something like this after running system.time? system.time(svd(Mean_svd_data)) user system elapsed 0 0 0 The data set is tiny and the function returns ...
    John KerpelJohn Kerpel
    Feb 12, 2009 at 12:49 am
    Feb 19, 2009 at 11:19 am
  • Hi list! I have a large matrix which I'd like to partition into blocks and for each block I'd like to compute the mean. Following a example where each letter marks a block of the partition: a a a d g ...
    Titus von der MalsburgTitus von der Malsburg
    Feb 16, 2009 at 5:43 pm
    Feb 17, 2009 at 3:42 am
  • I have a problem with ifelse(), I do not understand how it works. [1] 1 1 1 1 0 0 Can some one explain what is going on, I do not understand what ifelse is doing in this case. Can someone explain the ...
    Feb 10, 2009 at 9:44 pm
    Feb 10, 2009 at 10:13 pm
  • Hi all, I am using ggplot2 and continuing to find it very useful and pretty. However, I am trying to create some graphics for publication that would be included in an MS Word document (not my ...
    Ian FiskeIan Fiske
    Feb 4, 2009 at 3:12 pm
    Feb 4, 2009 at 8:51 pm
  • Hello All, A colleague of mine started working with R and out of curiosity I did some research on the language. Very nice. In my opinion this is one of the best languages I've found for getting tasks ...
    Joe HughesJoe Hughes
    Feb 2, 2009 at 5:39 pm
    Feb 2, 2009 at 10:54 pm
  • Dear list members, Does anyone know how to use rm() to remove only variables but not declared functions from the environment ? I understand I could name all the functions with, let's say ...
    Paulo GrahlPaulo Grahl
    Feb 2, 2009 at 1:16 pm
    Feb 2, 2009 at 10:45 pm
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Gabor Grothendieck: 100 posts Dwinsemius: 99 posts Waclaw Marcin Kusnierczyk: 94 posts Uwe Ligges: 60 posts Greg Snow: 58 posts Duncan Murdoch: 54 posts Dieter Menne: 53 posts Prof Brian Ripley: 51 posts Jim holtman: 44 posts Hadley wickham: 41 posts Marc Schwartz: 40 posts Frank E Harrell Jr: 38 posts Peter Dalgaard: 38 posts Stavros Macrakis: 35 posts Turner Rolf: 34 posts Ben Bolker: 32 posts Petr PIKAL: 32 posts Jorge Ivan Velez: 30 posts Mark Difford: 29 posts Paul Heinrich Dietrich: 26 posts
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