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932 discussions - 3,071 posts

  • I just now registered in R forum. I use Windows because of past history of using windows. I have been writing and using programs in java for about a decade. I work with unequal-interval-time-series ...
    Hill0093Hill0093
    Apr 23, 2011 at 2:51 am
    Apr 29, 2011 at 8:01 pm
  • Take care about your security http://users5.nofeehost.com/fohadim/wovifuhu.html Love- ItSee msToMeA Dream There are times when all you need is a touch;
    Asan RamzanAsan Ramzan
    Apr 2, 2011 at 7:18 pm
    Apr 18, 2011 at 3:40 pm
  • Perhaps I'm being even thicker than usual, but I can't find the tcltk package on CRAN. There is a tcltk2 package, which says that it is a collection of supplements to tcltk, but I cannot see a ...
    Rolf TurnerRolf Turner
    Apr 8, 2011 at 12:15 am
    Apr 8, 2011 at 5:46 am
  • Dear list members, is it possible to set some options only inside a function so that the original options are restored once the function is finished or aborted due to an error? Until now I do ...
    JannisJannis
    Apr 27, 2011 at 1:16 pm
    May 2, 2011 at 10:34 pm
  • Hi, I have a problem with Kolmogorov-Smirnov test fit. I try fit distribution to my data. Actualy I create two test: - # First Kolmogorov-Smirnov Tests fit - # Second Kolmogorov-Smirnov Tests fit see ...
    M.marcinmichalM.marcinmichal
    Apr 27, 2011 at 9:22 pm
    Sep 26, 2011 at 9:13 pm
  • Hi, When I run the survfit function, I want to get the restricted mean value and the standard error also. I found out using the "print" function to do so, as shown below, ...
    XuekeXueke
    Apr 5, 2011 at 7:56 pm
    Jul 21, 2011 at 11:56 pm
  • Hi, is it possible to use some statistic computing by R in proprietary software? Our software is written in c#, and we intend to use http://rdotnet.codeplex.com/ to get R work there. Especially we ...
    Stanislav BekStanislav Bek
    Apr 7, 2011 at 7:45 am
    Apr 7, 2011 at 8:01 pm
  • Dear expeRts, I recently asked for a real "centered" title (see, e.g., http://tolstoy.newcastle.edu.au/R/e13/help/11/01/0135.html). A nice solution (from Deepayan Sarkar) is to use "xlab.top" instead ...
    Marius HofertMarius Hofert
    Apr 4, 2011 at 11:39 am
    Apr 5, 2011 at 9:30 pm
  • Hello all, I use persp3d from the rgl-package to plot a sruface. The typical call is persp3d(x, y, z) With cooridinate-vectros x, y and a function-values matrix z. Now I have different z's, say ...
    Grigory AlexandrovichGrigory Alexandrovich
    Apr 5, 2011 at 9:43 am
    Oct 6, 2011 at 3:18 pm
  • I'm using fisher.exact on a 4x2 table and it seems to work. Does anyone know exactly what is going on? I thought fisher.exact is only for 2x2 tables. Note: I can't use chi-squared because I have a ...
    ViostormViostorm
    Apr 28, 2011 at 7:45 pm
    Apr 29, 2011 at 9:21 pm
  • I calculate an anova test in the following way: expdata<-read.table("/home/dorien/UA/meta-music/optimuse/optimuse1-build-desktop/results/results_processedCP", header=TRUE) ...
    Dorien HerremansDorien Herremans
    Apr 15, 2011 at 3:01 pm
    Apr 18, 2011 at 1:20 pm
  • Hi We are about to publish a book, which contains figures made with R plots. An important detail that we did not take into account is that the book will not be printed in 4 colors (cmyk mode), but ...
    Matthieu StiglerMatthieu Stigler
    Apr 13, 2011 at 9:15 am
    Apr 13, 2011 at 7:46 pm
  • Dear expeRts, I would like to create a plotmath-label of the form X_1^\prime. Here is how to *not* do it [not nicely aligned symbols]: plot(0,0,main=expression(italic(X*minute[1]))) ...
    Marius HofertMarius Hofert
    Apr 6, 2011 at 9:14 pm
    Apr 13, 2011 at 2:05 pm
  • Dear list I have 5 markers that can be used to detect an infection in combination. Could you please advise me how to use functions in ROCR/ other package to produce the ROC curve for a combination of ...
    Rasanga RuwanthiRasanga Ruwanthi
    Apr 27, 2011 at 9:17 pm
    Apr 23, 2012 at 6:28 am
  • Hi there, I am trying to do multiple pairwise Wilcoxon signed rank tests in a manner similar to: a <- c(runif(1000, min=1,maxP), rnorm(1000, 50), rnorm(1000, 49.9, 0.5), rgeom(1000, 0.5)) b <- ...
    JPJP
    Apr 28, 2011 at 1:18 pm
    May 5, 2011 at 2:15 pm
  • Hi, I need to perform calculations on subsets of a data frame: DF = data.frame(read.table(textConnection(" A B C D E F 1 a 1995 0 4 1 2 a 1997 1 1 3 3 b 1995 3 7 0 4 b 1996 1 2 3 5 b 1997 1 2 3 6 b ...
    MathijsdevaanMathijsdevaan
    Apr 9, 2011 at 9:14 am
    Apr 29, 2011 at 2:16 am
  • Hi, I do not have much R experience just the basics, so please excuse any obvious questions. I would like to create bubble plot that have Categorical data on the x and y axis and then the diameter if ...
    Jurgens de BruinJurgens de Bruin
    Apr 14, 2011 at 1:48 pm
    May 3, 2011 at 1:43 pm
  • Dear all, This is a simple probability problem. I want to know, How to generate a normal distribution with mean=1, min=0.2 and max=0.8? I know how the generate a normal distribution of mean = 1 and ...
    Mao JianfengMao Jianfeng
    Apr 28, 2011 at 4:01 pm
    Apr 29, 2011 at 8:06 pm
  • Dear All, I just want to remove ?NA? from the levels of a factor. For example: d<-data.frame(matrix(c("ww","ww","xx","yy","ww","yy","xx","yy","NA"), ncol=3, byrow=TRUE)) [1] xx yy NA Levels: NA xx yy ...
    LisaLisa
    Apr 25, 2011 at 7:53 pm
    Apr 26, 2011 at 5:59 pm
  • Hi, I need to extract the second largest element from each row of a matrix. Below is my solution, but I think there should be a more efficient way to accomplish the same, or not? set.seed(1) a <- ...
    Lars BishopLars Bishop
    Apr 26, 2011 at 12:01 pm
    Apr 26, 2011 at 4:36 pm
  • I have 4000 observations that I need to randomly relabel 1000 times and then calculate the mean of the 1000 values at each of the 4000 points. Any ideas for where to begin? Thanks Kevin -- View this ...
    KmatthewsKmatthews
    Apr 20, 2011 at 2:04 pm
    Apr 25, 2011 at 11:54 pm
  • Is there a blank space escape sequence in R, i.e. something like \sp etc. to produce a blank space? TIA Mark ??????????????????????????????????????? Mark Heckmann Blog: www.markheckmann.de R-Blog ...
    Mark HeckmannMark Heckmann
    Apr 25, 2011 at 1:01 pm
    Apr 25, 2011 at 6:09 pm
  • Apologies for troubling the list, but it is a test that needs to be carried out. I am resending the message that I sent earlier on behalf of Paul Miller, but with a certain word used in the variables ...
    Ted HardingTed Harding
    Apr 20, 2011 at 8:38 pm
    Apr 22, 2011 at 5:38 pm
  • Dear expeRts, I would like to create a scatter plot matrix with splom(). The lower panel should contain some additional information about the samples shown in the upper panel plot, see the splom() ...
    Marius HofertMarius Hofert
    Apr 18, 2011 at 8:43 pm
    Apr 20, 2011 at 9:17 am
  • Hi, I am trying to add text to the bottom of a lattice bwplot with multiple panels. I would like to add a label below each boxplot, but the labels do not come from the data. I've tried the following, ...
    Jeff StevensJeff Stevens
    Apr 8, 2011 at 12:32 pm
    Apr 12, 2011 at 1:18 pm
  • Dear all, I am a happy user of R console, but I would like to see syntax coloring. I use R 2.12 in Ubuntu Linux. I have found the packages "xterm256" and "highlight", but I was not able to figure out ...
    January WeinerJanuary Weiner
    Apr 1, 2011 at 10:32 am
    Apr 1, 2011 at 3:46 pm
  • How do I remove all objects except one in R? -- Thanks, Jim.
    Jim SilvertonJim Silverton
    Apr 12, 2011 at 9:39 pm
    Sep 28, 2011 at 1:55 am
  • Hi: I'm starting a research of Support Vector Regression. I want to obtain a model to predict a property A with a set of property B, C, D, ... This problem is very common for example in QSAR models ...
    YpriverolYpriverol
    Apr 29, 2011 at 7:47 pm
    Jun 7, 2011 at 8:35 pm
  • Hi everybody, I apologize for long mail in advance. I have data of 104 patients, which consists of 15 explanatory variables and one binary outcome (poor/good). The outcome consists of 25 poor results ...
    KhosodaKhosoda
    Apr 20, 2011 at 8:23 am
    Apr 29, 2011 at 3:08 pm
  • I've been reading some code from an example in a blog post ( http://www.maxdama.com/ here ) and I came across an operator that I hadn't seen before. The author used a <<- operator to update a ...
    Cliff CliveCliff Clive
    Apr 21, 2011 at 7:08 pm
    Apr 22, 2011 at 8:35 am
  • Hi! I am trying to work out the code to get a Fibonacci sequence, using the while() loop and only one variable. And I can't figure it out. Fibonacci<-c(1,1) while (max(Fibonacci)<500){ ...
    Georgina ImbergerGeorgina Imberger
    Apr 20, 2011 at 9:42 am
    Apr 21, 2011 at 4:59 pm
  • Dear useRs, I was asked to produce a survival curve like this: http://www.palug.net/Members/jabba/immaginetta.png/view with the cardinality of the riskset at the bottom. I do not like doing it, ...
    JabbaJabba
    Apr 30, 2011 at 2:44 pm
    May 6, 2011 at 7:17 am
  • Hello folks, Here's is info on what system I'm working on. R version 2.13.0 (2011-04-13) Platform: i686-pc-linux-gnu (32-bit) I'm trying to install the XML package. However, I end up with the ...
    Abraham MathewAbraham Mathew
    Apr 25, 2011 at 9:39 pm
    Apr 26, 2011 at 2:15 am
  • Hi Together, I have a problem with the plyr package - more precisely with the ddply function - and would be very grateful for any help. I hope the example here is precise enough for someone to ...
    Christoph JäckelChristoph Jäckel
    Apr 25, 2011 at 5:19 pm
    Apr 25, 2011 at 9:22 pm
  • Dear R, When I'm writing script I probably hit accidently some hot key and then the text in script is being overwritten by subsequent typing. Please what is the hot key or how can I disable it? -- ...
    DerekDerek
    Apr 23, 2011 at 6:07 pm
    Apr 25, 2011 at 2:25 pm
  • Hey guys, I've search a few threads about deleting a value from a vector, but no one has addressed this question so far. I want to delete the last value from a string of values I have: r = [ 1, 2, 3, ...
    EmpyreanEmpyrean
    Apr 18, 2011 at 12:51 am
    Apr 18, 2011 at 12:21 pm
  • Take vector x and a subset y: x=1:10 y=c(4,5,7,9) For each value in 'x', I want to know how many elements in 'y' are less than 'x'. An example would be: sapply(x,FUN=function(i) {length(which(y<i))}) ...
    Kevin UmmelKevin Ummel
    Apr 14, 2011 at 7:34 pm
    Apr 15, 2011 at 2:45 am
  • It looks like there might be some kind of problem with the Plyr-1.4.1 packages pushed to CRAN? The web pages show 1.4.1 as the current version, but trying to fetch the source through the provided ...
    Ian DavisIan Davis
    Apr 11, 2011 at 6:27 pm
    Apr 13, 2011 at 5:38 pm
  • Hello,.. Apologies for the newbie question but... I have a matrix R, and I know that *B %*% t(b) = R* *I'm trying to solve for B *(aka. 'factoring the correlation matrix' I think) Please help! I've ...
    Shawn KoppenhoeferShawn Koppenhoefer
    Apr 12, 2011 at 12:39 pm
    Apr 13, 2011 at 5:22 pm
  • I swear, I didn't touch it! I can't fit GLM's anymore, and I can't make it talk english (for googling the error messages) anymore. Fehler in runif(length(pi)) : Element 1 ist leer; Der Teil der ...
    Alexander EngelhardtAlexander Engelhardt
    Apr 2, 2011 at 9:05 pm
    Apr 4, 2011 at 12:24 pm
  • Dear useRs: I try to plot an rpart object but cannot get a nice tree structure plot. I am using plot.rpart and text.rpart (please see below) but the branches that connect the nodes overlap the text ...
    TudorTudor
    Apr 8, 2011 at 11:03 am
    Feb 15, 2012 at 7:41 pm
  • Hi! I wish to know if there is any R forum which is meant only for Statistics? I mean where we can clarify our statistics doubts and seek knowledge. I know there are lot many books and internet ...
    Vincy PyneVincy Pyne
    Apr 28, 2011 at 11:26 am
    Nov 17, 2011 at 5:08 am
  • Hi All, I was using the following command for performing kmeans for Iris dataset. Kmeans_model<-kmeans(dataFrame[,c(1,2,3,4)],centers=3) This was giving proper results for me. But, in my application ...
    RajiRaji
    Apr 6, 2011 at 10:19 am
    Oct 16, 2011 at 8:10 pm
  • Hi all, Suppose I have 2 data.frame , a and b, how can I add them together to get c? Thanks A a 1 b 2 c 3 A a 6 c 1 A a 7 b 2 c 4 -- Best, Zhenjiang
    Zhenjiang xuZhenjiang xu
    Apr 15, 2011 at 8:31 pm
    Jul 25, 2011 at 4:23 pm
  • Hello all, I wish to use read.csv to read a google doc spreadsheet. I try using the following code: data_url <- " ...
    Tal GaliliTal Galili
    Apr 29, 2011 at 3:19 pm
    Apr 30, 2011 at 8:55 am
  • I have the following lines of code: ind <- rollapply(GSPC, 200, mean) signal <- ifelse(diff(ind, 5) 0 , 1 , -1) signal[is.na(signal)] <- 0 I never get a value of -1 for signal even though I know ...
    EricEric
    Apr 29, 2011 at 1:46 am
    Apr 29, 2011 at 5:56 am
  • Dear all I would like to ask you if an assignment can be done inside a lapply statement. For example I would like to covert a double nested for loop for (i in c(1:dimx)){ for (j in c(1:dimy)){ ...
    AlaiosAlaios
    Apr 27, 2011 at 9:36 am
    Apr 27, 2011 at 8:50 pm
  • I am using /set.seed()/ before the /sample/ function. How does the length of the argument of /set.seed()/ and order of the digits affect how the sampling is carried out? Specifically, I have used ...
    Penny BiltonPenny Bilton
    Apr 22, 2011 at 3:18 am
    Apr 24, 2011 at 10:30 am
  • Hi, I'd like to change the default orientation of bwplot() and stripplot() so the plots are displayed vertically. Passing horizontalúLSE into stripplot in the simple code below doesn't seem to be the ...
    David NeuDavid Neu
    Apr 23, 2011 at 1:26 pm
    Apr 23, 2011 at 4:41 pm
  • Dear R, I have a bunch of geographic locations specified by lat-long coordinates. What's an easy way to calculate geographic distance between any two points? OR, perhaps there is a function for ...
    Scott ChamberlainScott Chamberlain
    Apr 11, 2011 at 3:37 pm
    Apr 21, 2011 at 8:56 pm
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