Grokbase Groups R r-help July 2009

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1,084 discussions - 3,672 posts

  • Hi all, Could anybody point me to some latest productivity tools in R? I am interested in speeding up my R programming and improving my efficiency in terms of debugging and developing R programs. I ...
    Jul 1, 2009 at 4:58 pm
    Jul 3, 2009 at 7:36 pm
  • OK, I guess I'm getting better at the data part of R. I wrote a program outside of R this morning to dump a bunch of experimental data. It's a sort of ragged array - about 700 rows and 400 columns, ...
    Mark KnechtMark Knecht
    Jul 5, 2009 at 12:02 am
    Jul 8, 2009 at 6:13 pm
  • Hi, 1.) I am trying to calculate the autocorrelation function for returns based on rolling window, but it doesn't work. My code is rollapply(Returns,20,acf). 2.) My next try is ...
    Andriy FetsunAndriy Fetsun
    Jul 1, 2009 at 10:22 am
    Jul 31, 2009 at 11:51 am
  • Hello all, I have a seemingly simple question which I have searched for an answer for for a few hours without luck. I have a matrix of both values and characters with thousands of rows. I would like ...
    Mehdi KhanMehdi Khan
    Jul 21, 2009 at 5:47 pm
    Jul 28, 2009 at 5:01 pm
  • I am new to the world of R/programming so this may be a really easy question. I thank you for your patience and help in advance I would like the characters km^2 to be displayed on the plot subtitle ...
    Jul 27, 2009 at 3:08 pm
    Jul 30, 2009 at 9:56 pm
  • Please explain me as what it means and how this analysis can be done using R and which library(ies) are needed. Thanks -- View this message in context ...
    Jul 20, 2009 at 5:30 pm
    Jul 21, 2009 at 8:28 pm
  • When I need to stop a running R script on Windows or Mac I just use the <esc key which kills the current script and returns the control to R interpreter. But when I run R from JGR the <esc is useless ...
    Jul 31, 2009 at 3:15 pm
    Aug 3, 2009 at 8:45 am
  • My institute has been heavily dependent on SAS for the past while, and SAS is starting to charge us a very deep amount for license renewal. Since we are a non-profit organization that is definitely ...
    Kel LamKel Lam
    Jul 16, 2009 at 9:40 pm
    Jul 27, 2009 at 6:41 pm
  • Hello Everyone, We have recently purchased a server which has 64GB of memory running a 64bit OS and I have compiled R from source with the following config ./configure --prefix=/usr/local/R-2.9.1 ...
    Scott ZentzScott Zentz
    Jul 6, 2009 at 7:52 pm
    Jul 7, 2009 at 2:07 pm
  • There are now several R geographic user groups, and a few have mailing lists on the R mailing list system. Thanks to Martin M, there's also a pointer to a page I'm maintaining to list/describe the ...
    Prof. John C NashProf. John C Nash
    Jul 30, 2009 at 12:33 pm
    Aug 6, 2009 at 1:06 pm
  • I have a dynamic time series model like this: dyn$lm( y ~ lag(y,-1) + x + lag(x,-1)+lag(x,-2) ) I need to do an out of sample forecast with this model. Is there any way I can do this with R? It would ...
    Hongwei DongHongwei Dong
    Jul 23, 2009 at 4:54 am
    Jul 24, 2009 at 2:56 am
  • Hi, I looked in the language definition and was surprised. Is there really no multi-line/block comment defined in R? I wanted to comment out 20 lines that I'm moving to a function but didn't want to ...
    Mark KnechtMark Knecht
    Jul 22, 2009 at 2:30 pm
    Jul 23, 2009 at 6:13 am
  • Maybe there is a great website out there or white paper that discusses this but again my Google skills (or lack there of) let me down. I would like to know the best way to export several doubles from ...
    Jason RupertJason Rupert
    Jul 9, 2009 at 12:34 am
    Jul 9, 2009 at 12:47 pm
  • I have hundreds of megabytes of price data time series, and perl scripts that extract it to tab delimited files (I have C++ programs that must analyse this data too, so I get Perl to extract it ...
    Ted ByersTed Byers
    Jul 3, 2009 at 9:48 pm
    Jul 4, 2009 at 2:10 am
  • HI Apologies for previously trying to post this question onto the Dev forum. I have recently update my versions of R and related packages. When I try to use rattle the following message appears ...
    Wayne MurrayWayne Murray
    Jul 30, 2009 at 8:41 am
    Aug 3, 2009 at 7:49 am
  • Hi: How can I extract the dimension-names of a pre-defined element in a multidimensional array in R ? A toy example is provided below: I have a 4-dimensional array with each dimension having certain ...
    Sauvik DeSauvik De
    Jul 25, 2009 at 9:12 pm
    Aug 1, 2009 at 5:57 pm
  • I deal with a huge amount of Biology data stored in different databases. The databases belongig to Bioconductor organization can be accessed through Bioconductor packages. Unluckily some useful data ...
    Jul 1, 2009 at 11:53 am
    Jul 26, 2009 at 3:48 pm
  • Dan Nordlund wrote: "It would be necessary to see the code for your 'brief test' before anyone could meaningfully comment on your results. But your results for a single test could have been a valid ...
    Jim BouldinJim Bouldin
    Jul 23, 2009 at 5:59 pm
    Jul 24, 2009 at 10:55 am
  • Hi, suppose I have following codes : library(zoo); library(ggplot2) dat <- matrix(rnorm(500*2), 500); dat <- zooreg(dat, start = as.Date("01/01/01", "%m/%d/%y"), frequency=1); plot(dat) head(dat) ...
    Jul 18, 2009 at 8:52 am
    Jul 22, 2009 at 10:07 pm
  • Why does the expression "(-8)^(1/3)" return NaN, instead of -2? This is not answered by Thanks, Dave
    Dave DeBarrDave DeBarr
    Jul 18, 2009 at 10:04 pm
    Jul 20, 2009 at 3:44 pm
  • Hello, I use the function sem the following way sem.mod <- sem(model, mod.cov, N=109) where the variables are modelled: Z - M Z - I Z - R M <- M I <- I R <- R Z <- Z The output is ... Normalized ...
    Stein, Luba (AIM SE)Stein, Luba (AIM SE)
    Jul 20, 2009 at 2:55 pm
    Jul 30, 2009 at 7:46 am
  • Hello all, I wish to perform a mcnemar test for a 3 by 3 matrix. By running the slandered R command I am getting a result but I am not sure I am getting the correct one. Here is an example code: (tt ...
    Tal GaliliTal Galili
    Jul 19, 2009 at 12:01 pm
    Jul 20, 2009 at 6:51 pm
  • hi, is there any wait function in R. I am running one R script to plot many graphs it is in the for loop. its showing no error but its not plotting well I think i can solve this problem with a wait ...
    Deepak m rDeepak m r
    Jul 14, 2009 at 11:17 am
    Jul 15, 2009 at 12:39 pm
  • Hi, I hope somebody can help me with this issue: I am doing population pyramids using the barplot command, so in the left side I have male age structure and in the right side the female age ...
    Victor Manuel Garcia GuerreroVictor Manuel Garcia Guerrero
    Jul 9, 2009 at 4:24 am
    Jul 10, 2009 at 4:20 am
  • Hi, I am generating a large number of graphs with pdf() and incorporating them in pdf document using pdflatex. According to the pdf() help: 'pdf' writes uncompressed PDF. It is primarily intended for ...
    David KeeganDavid Keegan
    Jul 30, 2009 at 9:13 am
    Jul 30, 2009 at 3:25 pm
  • Hi while teaching R, the question came up if it would be possible to add a picture (saved on the HDD) to a graph (generated by plot()), which we could not answer. It might easily kill a clean graph, ...
    Rainer M KrugRainer M Krug
    Jul 29, 2009 at 8:27 am
    Jul 30, 2009 at 10:40 am
  • I am trying to continuously evaluate online created data files using R-algorithms. Is there any simple way to let R iteratively check for new files in a given directory, load them and process them? ...
    Andreas PoschAndreas Posch
    Jul 28, 2009 at 11:04 am
    Jul 30, 2009 at 9:27 am
  • Hello, I apologize if an answer to my questions is available, or if I submitted this question incorrectly. I have read the mailing lists, as well as the R Project and CRAN homepages. However, I may ...
    Daniel AbbottDaniel Abbott
    Jul 17, 2009 at 10:15 am
    Jul 29, 2009 at 1:08 pm
  • Hi, All, I have a dataset with binary response ( 0 and 1) and some numerical covariates. I know I can use logistic regression to fit the data. But I want to consider more locally. So I am wondering ...
    cindy Guocindy Guo
    Jul 27, 2009 at 11:06 pm
    Jul 28, 2009 at 11:31 pm
  • I need to make a fairly complex animated graphic and decided to use grid for it. A very simple example of what I need: ##============================================================================== ...
    Unternährer ThomasUnternährer Thomas
    Jul 21, 2009 at 12:18 pm
    Jul 22, 2009 at 12:03 pm
  • Hi everyone! I'm new to R, and I've sent this message as a non-member, but since it's pretty urgent, I'm sending it again now I'm on the mailing list (Thanks Daniel for your suggestion ...
    Jul 20, 2009 at 5:41 am
    Jul 21, 2009 at 9:29 am
  • Dear R users, I have two nonlinear equations, f1(x1,x2)=0 and f2(x1,x2)=0. I try to use optim command by minimize f1^2+f2^2 to find x1 and x2. I found the optimal solution changes when I change ...
    Jul 17, 2009 at 5:37 am
    Jul 20, 2009 at 5:38 pm
  • Hi, Is it possible to make something like the following code actually work? My goal in this example would be that I'd see results like 1 10000 10100 2 10100 10200 3 10200 10300 4 10300 10400 In real ...
    Mark KnechtMark Knecht
    Jul 18, 2009 at 3:10 am
    Jul 19, 2009 at 1:58 am
  • Hi, I have a data.frame that is date ordered by row number - earliest date first and most current last. I want to create a couple of new columns that show the max and min values from other columns ...
    Mark KnechtMark Knecht
    Jul 1, 2009 at 3:49 pm
    Jul 13, 2009 at 2:02 pm
  • Hi Sir, Thanks for making package available to us. I am facing few problems if you can give some hints: Problem-1: The model summary and residual deviance matched (in the mail below) but I didn't ...
    Jul 3, 2009 at 1:25 pm
    Jul 9, 2009 at 6:16 am
  • Hi I have a string "56 Fe [1]" that I would like to use as a variable name by using "assign" however I think the spaces and brackets might be causing R some trouble. How can I change the string so ...
    Kurt SmithKurt Smith
    Jul 3, 2009 at 10:56 am
    Jul 7, 2009 at 11:33 am
  • Can anybody please tell me a good way to do the following? Given a vector, number of rows and number of columns, return a matrix as follows. Easiest to give an example: x=c(1,2), nrow=5, ncol=4 ...
    William SimpsonWilliam Simpson
    Jul 4, 2009 at 3:17 pm
    Jul 5, 2009 at 12:48 pm
  • Must be the heat or something but I can't get my brain into gear and figure out how to get something like if (1) { c <- 1; foo <- function () print(c); } c <- 2 foo() to print 1, not 2. (The real ...
    Allan EngelhardtAllan Engelhardt
    Jul 2, 2009 at 4:46 pm
    Jul 3, 2009 at 6:16 am
  • When I use the scan function in the Rgui console it works as expected. However it seems that when I put the same command in a script file it doesn't wait for input. Is there an option to scan to make ...
    Mark KnechtMark Knecht
    Jul 9, 2009 at 6:24 pm
    Nov 15, 2012 at 6:06 pm
  • Hi all, I've got the following error message in using e1071 svm routine... Could anybody please help me? Thank you! --------------------------------- model <- svm(y=factor(mytraindata[, 1]), ...
    Jul 7, 2009 at 10:05 pm
    Nov 10, 2010 at 2:05 am
  • Hi i am very new to R and I have been trying to change each individual piece of data in a data set to 10 if it is below 0 and 5 if it is above 0. I know this sounds very easy but i am struggling!! -- ...
    Jul 15, 2009 at 3:07 pm
    Aug 8, 2009 at 9:55 pm
  • Hi, I have a very basic question about install packages from CRAN on unix. I only installed on Windows before. Should I use the command install.package? The error message I got is syntax error near ...
    cindy Guocindy Guo
    Jul 29, 2009 at 12:15 am
    Jul 29, 2009 at 2:49 am
  • Hi list, My attention was drawn to the foreach package by recent posts...I decided to have a look... I'm using R.2.9.1 on Windows, I have downloaded the foreach package today (v 1.2.1), together with ...
    Jul 20, 2009 at 12:48 pm
    Jul 23, 2009 at 7:55 pm
  • I'm trying to run this simple random sample procedure and keep getting the error message shown. I don't understand this; I've designated x as a numeric vector, so what is going on here? Thanks. Error ...
    Jim BouldinJim Bouldin
    Jul 23, 2009 at 3:30 pm
    Jul 23, 2009 at 5:14 pm
  • Dear R community! I am trying to create a heatmap based on the following data. As you can see the diagonal (0,0 to 10,10) is always 0). If I run the heatmap command like i posted it I get a graph ...
    Markus MühlbacherMarkus Mühlbacher
    Jul 20, 2009 at 3:38 pm
    Jul 21, 2009 at 4:04 pm
  • Hi, 1. I want 95% not 99% confidence intervals in my summary.Design plot using the Design package. Putting as an argument in plot does not work. The default appears to be .99 not .95 as ...
    Elizabeth StannyElizabeth Stanny
    Jul 18, 2009 at 12:31 am
    Jul 19, 2009 at 2:42 pm
  • Not sure if there is an R way to do this or a regular express way, but here is what I am trying to do. I've got lots of data where the format is HH:MM:SS, but I need to format it like HH:MM:00, i.e ...
    Jason RupertJason Rupert
    Jul 16, 2009 at 7:25 pm
    Jul 16, 2009 at 8:55 pm
  • Hi, I have spent some time locating a quite subtle (at least in my opinion) bug in my code. I want two nested for loops traversing the above-diagonal part of a square matrix. In pseudo code it would ...
    Michael KnudsenMichael Knudsen
    Jul 14, 2009 at 5:38 am
    Jul 14, 2009 at 1:26 pm
  • I am in the process of submitting a package to CRAN. R CMD check ran successfully on the package on my local computer, using R version 2.1.1. However, on the computers for CRAN (with version 2.10.0), ...
    Rebecca SelaRebecca Sela
    Jul 8, 2009 at 6:31 pm
    Jul 14, 2009 at 7:29 am
  • I want to transpose a dataframe like level 2006 2007 2008 A .... B ..... C ........ into level year A 2006 A 2007 A 2008 B 2006 ...... There is a procedure in SAS can do this, is there any function ...
    Jul 10, 2009 at 1:30 am
    Jul 10, 2009 at 6:36 am
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887 users for July 2009

Gabor Grothendieck: 131 posts David Winsemius: 110 posts Mark Knecht: 97 posts Jim holtman: 81 posts Steve Lianoglou: 79 posts Duncan Murdoch: 77 posts Uwe Ligges: 72 posts Greg Snow: 55 posts Henrique Dallazuanna: 49 posts Jorge Ivan Velez: 48 posts Marc Schwartz: 47 posts John Kane: 43 posts Petr PIKAL: 43 posts Michael Knudsen: 38 posts Ben Bolker: 33 posts Ted Harding: 33 posts Hadley wickham: 28 posts Harrell, Frank E: 28 posts Tal Galili: 25 posts Dieter Menne: 24 posts
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