Search Discussions

915 discussions - 2,998 posts

  • Hi R users Is there anything wrong in "is" function? (R 2.7.2) I believe that everyone will agree that "7" is an integer, right? but why R shows 7 is not an integer [1] TRUE Thank you very much in ...
    Sep 24, 2008 at 4:40 am
    Sep 30, 2008 at 4:33 am
  • Dear all, I've been struggling to perform common operations on dates that I need to be able to correct draw date-time scales - in particular I need to be able to round/truncate/ceiling dates to ...
    Hadley wickhamHadley wickham
    Sep 11, 2008 at 3:02 pm
    Sep 12, 2008 at 4:25 pm
  • Sorry. Let me try again then. I am trying to find "significant" predictors" from a list of about 44 independent variables. So I started with all 44 variables and ran drop1(sep22lr, test="Chisq").. ...
    Darin BrooksDarin Brooks
    Sep 27, 2008 at 1:44 pm
    Oct 7, 2008 at 3:21 am
  • Hello, Recently I have been trying to open a huge database with no success. It�s a 4GB csv plain text file with around 2000 rows and over 500,000 columns/variables. I have try with The SAS System, ...
    José E. LozanoJosé E. Lozano
    Sep 22, 2008 at 6:50 am
    Sep 23, 2008 at 6:36 am
  • Hello All, I am using Tinn-R (v integrated with R (v 2.7.2) on a 32-bit Windows Vista system. When I try to run a code and send it to R from Tinn-R, I get the following error message; ?Error ...
    Sep 14, 2008 at 3:52 am
    Feb 10, 2011 at 3:17 pm
  • Hi, Can we get the code for calculating Oja median for multivariate data Thanks and Regards Rahul Agarwal Analyst Equities Quantitative Research UBS_ISC, Hyderabad On Net: 19 533 6363
    Rahul-A AgarwalRahul-A Agarwal
    Sep 18, 2008 at 9:20 am
    Oct 13, 2008 at 5:10 am
  • Dear all, I have 3 datasets all of which share the same longitude and latitude values, which I'm looking to plot onto a scattergraph. The third dataset has values which can only be either '1' or ...
    Steve MurraySteve Murray
    Sep 5, 2008 at 1:10 pm
    Sep 19, 2008 at 4:14 pm
  • Dear R-list, maybe some of you could point me in the right direction: Are you aware of any FREE Fortran or Java libraries/actual pieces of code that are VERY efficient (time-wise) in running the ...
    Dimitri LiakhovitskiDimitri Liakhovitski
    Sep 8, 2008 at 4:05 pm
    Sep 9, 2008 at 10:51 am
  • How to use sub, gsub, etc. to replace "\" in a string to "/"? For example,convert "C:\foo\bar" to "C:/foo/bar". Thanks, Shengqiao Li
    Shengqiao LiShengqiao Li
    Sep 23, 2008 at 8:00 pm
    Sep 24, 2008 at 3:19 pm
  • please delete me from this mailing list.... i is not an R user and I overload my mail... thanks
    Giovanni TarquinioGiovanni Tarquinio
    Sep 3, 2008 at 4:23 pm
    Sep 19, 2008 at 12:09 am
  • Hello, I realize that using: x[x 3 & x < 5] I can fetch all elements between 3 and 5. However I read in from a CSV file, and I would like to fetch all columns from within a range ( 842-2411). In teh ...
    Jason ThibodeauJason Thibodeau
    Sep 14, 2008 at 4:22 pm
    Sep 16, 2008 at 2:39 am
  • I tried to search for a string of words ``as one entity'' following the example in the help file: and got the error message: 2008-09-11 08:55:41.356 open[823] No such file: /Users/rturner/http:/ ...
    Rolf TurnerRolf Turner
    Sep 10, 2008 at 9:03 pm
    Sep 11, 2008 at 5:42 pm
  • Hello. I'm having trouble installing rgl. I have a theory as to the problem. First, the error message and session info. trying URL 'http://probability.ca/cran/src/contrib/rgl_0.81.tar.gz' Content ...
    Kevin E. ThorpeKevin E. Thorpe
    Sep 3, 2008 at 8:34 pm
    Feb 22, 2012 at 7:28 pm
  • I found it easy to use R when typing data manually into it. Now I need to read data from a file, and I get the following errors: Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, ...
    Ted ByersTed Byers
    Sep 19, 2008 at 5:01 pm
    Jun 22, 2012 at 9:49 am
  • I have a a simple function that generates a time series square wave: genseq <- function() { x <- numeric(4*365) s <- seq(as.Date("2005-01-01"), as.Date("2008-12-31"), by="month") ob <- ...
    Sep 30, 2008 at 7:17 pm
    Oct 3, 2008 at 1:12 pm
  • I have a huge data set with thousands of variable and one binary variable. I know that most of the variables are correlated and are not good predictors... but... It is very hard to start modeling ...
    Sep 27, 2008 at 5:51 pm
    Oct 1, 2008 at 5:12 pm
  • I tried downloading R-2.7.2 (http://cran.cnr.berkeley.edu/bin/windows/base/R-2.7.2-win32.exe, both from Berkeley and cran) and both times I got a warning from Computer Associates eTrust Antivirus ...
    Dave DeBarrDave DeBarr
    Sep 23, 2008 at 12:38 am
    Sep 30, 2008 at 10:27 am
  • Hello, Is there a simple way to take an input, and convert the decimal integers to binary? In this case, I have a CSV file, and I need to convert the first column of every line to binary. Thanks. -- ...
    Jason ThibodeauJason Thibodeau
    Sep 25, 2008 at 7:33 pm
    Sep 26, 2008 at 7:55 am
  • This is an operating system question, but it is with the intent of using R on that operating system. I have an ibook G4 Power PC that I am going to install linux on. Is there a better, worse, or ...
    Stephen sefickStephen sefick
    Sep 12, 2008 at 8:30 pm
    Sep 17, 2008 at 4:21 am
  • Hello, I am trying to use self created functions in other scripts than the one where they are stored. For the moment I am using the following structure of commands to do that: 1. Load the text file ...
    Mihai MirautaMihai Mirauta
    Sep 11, 2008 at 1:30 pm
    Sep 12, 2008 at 3:02 am
  • Hi I have a dataframe in which some subjects appear in more than one row. I want to extract the subject-rows which have the minimum date per subject. I tried the following aggregate function ...
    Erich StuderusErich Studerus
    Sep 8, 2008 at 10:38 am
    Sep 9, 2008 at 6:57 am
  • Dear R Users, another problem for me is the output of a function. I have several output variables which I give back with the list command. test <- function {return(list(a,b,c,d,e,f,g,...))} After the ...
    Stefan FritschStefan Fritsch
    Sep 26, 2008 at 1:57 pm
    Sep 26, 2008 at 10:05 pm
  • Dear Listers, I've been a big fan of R since graduate school. After working in the industry for years, I haven't had many opportunities to use R and am mainly using SAS. However, I am still forcing ...
    Wensui LiuWensui Liu
    Sep 19, 2008 at 5:01 am
    Sep 22, 2008 at 8:15 am
  • Hi, how can I create a rainbow gradient in R? For example, let's say I have a plot of y = x...and I want the plot to go from red - orange - yellow - green - blue - etc. Right now, I know how to do ...
    Gillian SilverGillian Silver
    Sep 17, 2008 at 8:58 pm
    Sep 19, 2008 at 3:10 am
  • Hi all, I am generally quite fond of the unix commandline keystrokes (e.g. searching back in your history with [CTRL]-R, and cutting/pasting with [CTRL]-K/Y) which work in the R commandline in *nix ...
    Sep 17, 2008 at 1:26 pm
    Sep 18, 2008 at 11:27 pm
  • When I use panel.contourplot() with filled color regions, the coloring follows the stair-step edge of the underlying grid instead the smooth contour lines themselves. How can I get the latter ...
    Waichler, Scott RWaichler, Scott R
    Sep 15, 2008 at 9:07 pm
    Sep 18, 2008 at 8:54 pm
  • Dear R community I have stored the results of arrays in a list consist of J-components (say 200 components). Each component containing same no of columns but may be different no of rows. e.g [[1]] ...
    Muhammad AzamMuhammad Azam
    Sep 10, 2008 at 3:49 pm
    Sep 12, 2008 at 10:50 am
  • Dear R Users, I am on Windows XP SP2 platform, using R version 2.7.2 . I was wondering if there is a way to find out, within R, the number of CPU's on my machine ? I would use this information to set ...
    Tolga I UzunerTolga I Uzuner
    Sep 9, 2008 at 6:59 pm
    Sep 10, 2008 at 3:11 pm
  • Hello I am a newbie. I had my R upgraded from 2.7.1 to 2.7.2 and in doing so I decided to install all 2.7 versions under c:\program files\R\2.7 from now on (2.7.1 is located under .\2.7.1) Although I ...
    Eduardo M. A. M.MendesEduardo M. A. M.Mendes
    Sep 7, 2008 at 12:28 pm
    Sep 9, 2008 at 2:31 pm
  • Yes, I don't know how to copy the plot on Mac and paste on to Word because you can't right click on the graph and say "copy as metafile." I'm so surprised I can't find any information about this ...
    Sep 7, 2008 at 5:46 am
    Feb 26, 2009 at 5:19 am
  • Dear R fans ( and wiki fans), I am just writing a draft to introduce confidence intervals of various "effect sizes" to my students. Surely, I'll recommend the package MBESS in R. Currently, it means ...
    Sep 28, 2008 at 6:53 pm
    Oct 23, 2008 at 8:13 am
  • Windows XP R 2.7.2 I need to create a list of varying length of the form SS1 SS2 SS3 . . . SSn I will be using the list for the dimnames of a matrix that will have varying dimensions. Any suggestions ...
    John SorkinJohn Sorkin
    Sep 27, 2008 at 5:49 pm
    Sep 28, 2008 at 8:34 pm
  • Hi List, Graphical output to PDF's ,RTF ,CSV is known through R. Can it be modified for outputting to Google Docs (which is basically uploaded files ,published to become html pages) Is there any ...
    Ajay ohriAjay ohri
    Sep 23, 2008 at 4:25 pm
    Sep 24, 2008 at 6:03 pm
  • Hello everyone, I want to plot a "greater than" symbol (the "_" under " ") on the x-axis in the labels. Is it possible to do it? Thanks. Bingshan
    Li, BingshanLi, Bingshan
    Sep 21, 2008 at 4:37 am
    Sep 21, 2008 at 11:26 pm
  • Hi, How can I make the cor(x, y, method="spearman") call to produce an error when the input to it (x, y) produces an error? Here is a simple example: [1] -Inf 0.0000000 0.6931472 ## error, as ...
    Timur ShtatlandTimur Shtatland
    Sep 10, 2008 at 8:04 pm
    Sep 14, 2008 at 11:52 pm
  • Hi all, could someone tell me which is the best user-friendly free/open source sql database system to use with R, particularly as a back-end for a data-hungry web page? Thanks in advance. Kind ...
    Chibisi Chima-OkerekeChibisi Chima-Okereke
    Sep 2, 2008 at 1:16 pm
    Sep 4, 2008 at 9:08 am
  • Hi, I tried to calculate the formula for the birthday problem (the probability that at least two people out of a group of n people share the same birthday) But the factorial-function allows me only ...
    Jörg GroßJörg Groß
    Sep 28, 2008 at 5:43 pm
    Nov 16, 2008 at 4:17 am
  • Last week I asked about data ellipses with rgl:::ellipse3d() with lines showing the principal axes. (The goal is a visual demonstration of PCA as a rotation of variable space to component space.) I ...
    Michael FriendlyMichael Friendly
    Sep 24, 2008 at 1:23 pm
    Sep 24, 2008 at 6:39 pm
  • Hello, I would like to state what I am (trying) to do. I have data set. It has 5749 rows (including the header) and 23 columns. The data contains values related to spatial aspects of the 412 ...
    Michael JustMichael Just
    Sep 23, 2008 at 6:00 pm
    Sep 24, 2008 at 5:09 pm
  • Dear All, The function curve() draws the graph of functions from R to R. Is there some homologous function to curve() to draw functions from R^2 to R? Thanks in advance, Paul
    Paul SmithPaul Smith
    Sep 23, 2008 at 4:54 pm
    Sep 24, 2008 at 4:56 pm
  • Hi, Does anybody know if row.name = FALSE actually works in v2.6.2? Because it isn't working for me... here is some sample code and output: ====+====+====+====+====+====+====+====+====+====+ ...
    Matthew PettisMatthew Pettis
    Sep 24, 2008 at 1:49 am
    Sep 24, 2008 at 5:48 am
  • Hello, I am currently using R to run an external program and then read the results the external program sends to the stdout which are tsv data. When R reads the results in it converts it to to a list ...
    Michael A. GilchristMichael A. Gilchrist
    Sep 12, 2008 at 4:34 pm
    Sep 22, 2008 at 5:33 pm
  • I have a number of files containing anywhere from a few dozen to a few thousand integers, one per record. The statement "refdata18 = read.csv("K:\\MerchantData\\RiskModel\\Capture.Week.18.csv", ...
    Ted ByersTed Byers
    Sep 22, 2008 at 1:01 am
    Sep 22, 2008 at 8:30 am
  • Is it possible to see if a plot is already open before I call lines()? -- View this message in context: http://www.nabble.com/Plot-availability-tp19572437p19572437.html Sent from the R help mailing ...
    John crepezziJohn crepezzi
    Sep 19, 2008 at 1:32 pm
    Sep 19, 2008 at 9:37 pm
  • Hello, I'm trying to fit a pretty simple confirmatory factor analysis using the sem package. There's a CFA example in the examples, which is helpful, but the output for my (failing) model is hard to ...
    Adam D. I. KramerAdam D. I. Kramer
    Sep 18, 2008 at 5:01 pm
    Sep 18, 2008 at 6:56 pm
  • Hi all, i am looking to built a simple example of a very basic propensity score adjustment, just using the estimated propensity scores as inverse probability weights (respectively 1-estimated weights ...
    Bunny, lautloscrew.comBunny, lautloscrew.com
    Sep 18, 2008 at 3:31 pm
    Sep 18, 2008 at 6:27 pm
  • Hi! Is there any way of having a greyed ("ghosted") text (i.e, 2006) in the background of a plot? I'm making a dynamic plot and would like to show the year of each time step as a big greyed text in ...
    Agustin LoboAgustin Lobo
    Sep 12, 2008 at 12:35 pm
    Sep 14, 2008 at 1:41 pm
  • Hi, I have following kind of dataset (all are dates) in my Excel sheet. 09/08/08 09/05/08 09/04/08 09/02/08 09/01/08 29/08/2008 28/08/2008 27/08/2008 26/08/2008 25/08/2008 22/08/2008 21/08/2008 ...
    Megh DalMegh Dal
    Sep 9, 2008 at 6:48 am
    Sep 10, 2008 at 1:17 pm
  • Dear all, I encountered a problem on starting and using the R v 2.7.2 installation on my PC running Windows Vista and would appreciate your help. When R was first started, the Rgui returned several ...
    Thomas LoThomas Lo
    Sep 7, 2008 at 11:00 am
    Sep 10, 2008 at 5:56 am
  • Dear all, I have a large dataset which I hope to reduce in size, to make it more useable. I hope to do this by taking an average of each 60 x 60 blockof values and forming a new data frame out of the ...
    Steve MurraySteve Murray
    Sep 7, 2008 at 7:32 pm
    Sep 8, 2008 at 10:18 pm
Group Navigation
period‹ prev | Sep 2008 | next ›
Group Overview
groupr-help @

751 users for September 2008

Gabor Grothendieck: 85 posts Prof Brian Ripley: 76 posts Duncan Murdoch: 73 posts Jim holtman: 72 posts Hadley wickham: 64 posts Stephen sefick: 62 posts Peter Dalgaard: 53 posts Greg Snow: 47 posts Henrique Dallazuanna: 47 posts Yihui Xie: 45 posts Rkevinburton: 37 posts Jorge Ivan Velez: 33 posts David Winsemius: 30 posts Marc Schwartz: 27 posts Uwe Ligges: 27 posts Adam D. I. Kramer: 26 posts Henrik Bengtsson: 26 posts Mark Difford: 26 posts Rolf Turner: 26 posts Adaikalavan Ramasamy: 25 posts
show more