Grokbase Groups R r-help June 2009

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961 discussions - 2,986 posts

  • Proposal That a new mailing list be established that pertains exclusively to R documentation. The purpose of the list would be to discuss weak sections of the documentation and establish fixes for ...
    Patrick BurnsPatrick Burns
    Jun 14, 2009 at 10:45 am
    Jun 15, 2009 at 1:55 pm
  • Hi, all. I began to migrate my R codes from Windows to Linux and surprised me with an old question. I simplified the problem and made a little test to compare times at same computer and the Linux ...
    Cézar FreitasCézar Freitas
    Jun 26, 2009 at 7:23 pm
    Jun 30, 2009 at 11:29 am
  • Hi, i need to recognize itemization structures in strings which follow the format: "digit-digit-dot" like e.g. 1. 2. 19. 211. Given the string " This happened in the 21. century." (the dot behind 21 ...
    Mark HeckmannMark Heckmann
    Jun 8, 2009 at 2:15 pm
    Jun 9, 2009 at 6:23 pm
  • Hi, I am a little lonely as R users in my group. So, I would like to know which editor is the most used in the R community. This post is some kind of survey. Personally, I use Emacs with ESS, It ...
    Martial SankarMartial Sankar
    Jun 2, 2009 at 7:06 am
    Jun 3, 2009 at 9:48 am
  • Hi R-helpers, Please see the below R output. The problem is that after running the ifelse statement, data$SOCIAL_STATUS is converted from a factor to a character. Is there some way I can avoid this ...
    Mark NaMark Na
    Jun 24, 2009 at 4:34 pm
    Nov 5, 2011 at 1:40 am
  • Dear R-helpers, I am helping a SAS user run some analyses in R that she cannot do in SAS and she is complaining about R's peculiar (to her!) way of recoding variables. In particular, she is wondering ...
    Mark NaMark Na
    Jun 22, 2009 at 6:27 pm
    Jun 23, 2009 at 2:02 pm
  • Hello, If I execute X11() plot( stuff ) X11() plot( other stuff) then at this point I have two windows with plots and the second graphics window is active. I don't see the devices using ls(). 1) ...
    Mark KnechtMark Knecht
    Jun 30, 2009 at 4:07 pm
    Jul 1, 2009 at 2:48 pm
  • Hi All, There are several replies to the question below, but I think there must exist a better way of doing so. I just want to check whether all the elements of a vector are same. My vector has one ...
    Jun 16, 2009 at 11:42 am
    Jun 22, 2009 at 11:15 am
  • My x axis is a series of daily dates (e.g., 01/01/2000, 01/02/2000, etc.) from 2000 to end of 2008. The default only gives me 4 ticks. I want more. Why doesn't this work? ...
    Graves, GregoryGraves, Gregory
    Jun 8, 2009 at 6:59 pm
    Jun 9, 2009 at 6:12 pm
  • Hello. I am trying to invert a matrix, and I am finding that I can get different answers depending on whether I set LAPACK true or false using "qr". I had understood that LAPACK is, in general more ...
    Avraham AdlerAvraham Adler
    Jun 17, 2009 at 3:37 pm
    Jun 18, 2009 at 4:38 pm
  • Dear list members, i am currently want to install Rpy2 in a linux box which has R 2.4.0 installed RPy requries R 2.7.0 or above but i have no root previlleges so my question is how to install R 2.7.0 ...
    Daofeng LiDaofeng Li
    Jun 9, 2009 at 3:50 am
    Jun 17, 2009 at 6:38 am
  • Hi, I've a vector like this: [1] NA NA NA NA NA NA NA [8] NA NA NA NA NA NA NA [15] NA NA NA NA NA NA NA [22] NA NA NA NA NA NA NA [29] NA NA NA NA NA NA NA [36] NA NA NA NA NA NA NA [43] NA NA NA NA ...
    Alfredo AlessandriniAlfredo Alessandrini
    Jun 23, 2009 at 2:00 pm
    Jun 24, 2009 at 1:15 am
  • Is there a way to get a reference list of journal articles that have used R? I am just looking for some examples of R graphs and presentation of results where R was used to generate the results ...
    Jason RupertJason Rupert
    Jun 6, 2009 at 6:03 pm
    Jun 7, 2009 at 2:41 pm
  • Hi, i' d like to use R for simple calculations. I show you an examples to make clear my help request I' ve a file .csv like this (my real file is composed by 10.000 lines and 8 columns) x y 3 4 1 7 ...
    Carletto RossiCarletto Rossi
    Jun 2, 2009 at 10:22 am
    Jun 2, 2009 at 1:21 pm
  • Hi there, I just wonder how to draw this kind of picture... and this is what i have done %%%%% library(shape) ...
    Jun 23, 2009 at 3:24 am
    Jun 25, 2009 at 8:19 am
  • Hello: My problem is that I have a data frame of means, and a data frame of standard deviations which match up to each mean. I have been trying to create 500 random numbers in a given dataset for ...
    Alexandre LockhartAlexandre Lockhart
    Jun 18, 2009 at 5:10 pm
    Jun 19, 2009 at 8:56 pm
  • Hi all, I apologize for this off-topic question but I need your help -- I know there are lots of experts here. As a lover and student of statistics, I am thinking of building a tree of various ...
    Jun 18, 2009 at 6:30 pm
    Jun 19, 2009 at 1:35 pm
  • Dear R-help, I'm very sorry to ask 2 questions in a week. I am using the package 'crr' and it does exactly what I need it to when I use the dataset a. However, when I use dataset b I get the ...
    Laura BonnettLaura Bonnett
    Jun 25, 2009 at 3:38 pm
    Jul 15, 2011 at 10:54 am
  • Dear list, I am trying to construct a list of functions using rep. I can't understand the following: The error says that "object of type 'special' is not subsettable", and I have no idea what this ...
    Craig P. PyrameCraig P. Pyrame
    Jun 30, 2009 at 12:00 pm
    Jul 1, 2009 at 8:14 am
  • Dear R-Users, I need to lookup values from a 2-d table using the row names and column names as indices. I was wondering if there's a way to do this without an explicit loop. Example: #x is the 2-d ...
    Rama RamakrishnanRama Ramakrishnan
    Jun 25, 2009 at 2:02 pm
    Jun 25, 2009 at 3:20 pm
  • Hi All, I have been trying to get this LOO-Cross Validation method to work on R for the past 3 weeks but have had no luck. I am hoping someone would kindly help me. Essentially I want to code the ...
    Jun 14, 2009 at 9:01 pm
    Jun 20, 2009 at 8:14 pm
  • Hi, I have a vector a=c(NA, 3, 4, 4, NA, NA, 3) and I would like to use function to get a vector like this: wy=(1,2,2,2,1,1,2) - you know, this vector create 1 or 2 depends on value in ...
    Jun 16, 2009 at 9:46 pm
    Jun 19, 2009 at 8:48 pm
  • Hi I am doing an simulation, and I a large proportion of the simulation time is taken up by memory allocations. I am creating an object, and storing it in a list of those objects. essentially: x <- ...
    Rainer M KrugRainer M Krug
    Jun 1, 2009 at 10:08 am
    Jun 2, 2009 at 1:02 pm
  • I would like to know how R computes the probability of an event in a logistic model (P(y=1)) from the score s, linear combination of x and beta. I noticed that there are differences (small, less than ...
    Renzi FabrizioRenzi Fabrizio
    Jun 30, 2009 at 9:54 am
    Jul 2, 2009 at 7:54 am
  • Hi R-users, I try to use sn package but it give me the following message: Warning: package 'sn' is in use and will not be installed updating HTML package descriptions I did tried a few time to save ...
    Roslina ZakariaRoslina Zakaria
    Jun 1, 2009 at 3:04 am
    Jun 30, 2009 at 7:56 pm
  • Dear R-helpers, I had a conversation with a guy working in a "business intelligence" department at a major Spanish bank. They rely on recursive partitioning methods to rank customers according to ...
    Carlos J. Gil BellostaCarlos J. Gil Bellosta
    Jun 19, 2009 at 6:35 pm
    Jun 23, 2009 at 2:31 pm
  • Dear All, I am having some problem in apply function. I have some data like below. I want to get a range vector (which is max-min value for each row , ignoring NA values.) V2 V3 V4 V5 V6 V7 V8 V9 1 ...
    Suparna mitraSuparna mitra
    Jun 17, 2009 at 11:14 am
    Jun 18, 2009 at 10:05 pm
  • hi, I have two data.frames each with two columns; x1 1 4 1 3 1 6 2 9 2 2 2 5 3 6 3 7 3 4 x2 1 -3 1 -7 2 -3 2 -2 2 -8 3 -1 3 -2 3 -1 now I want to merge this data.frames to one data.frame. The problem ...
    Martin BatholdyMartin Batholdy
    Jun 18, 2009 at 12:33 am
    Jun 18, 2009 at 4:50 pm
  • All: Though I am fairly new to R, I am trying to work my way through J Oksanen's "Incidence Function Model in R" and can't get past some error with my glm arguments. I'm getting through before I get ...
    Steve kimbleSteve kimble
    Jun 21, 2009 at 6:47 pm
    Jul 6, 2009 at 2:54 pm
  • Hello, I would like to create a plot composed of stacked boxes (squares or rectangles), where the size of the box would represent the frequency of observations based on a categorical variable ...
    Osman Al-RadiOsman Al-Radi
    Jun 19, 2009 at 3:40 pm
    Jun 29, 2009 at 4:44 pm
  • I am analysing occurrences of a phenomenon by time, and each of these timestamps taken from email headers represents one occurrence. (The last number is the time zone.) I can easily change the ...
    Thomas LevineThomas Levine
    Jun 19, 2009 at 10:06 pm
    Jun 24, 2009 at 2:15 pm
  • Hi, I have been using R for a while. Recently, I have begun converting my package into S4 classes. I was previously using Rdoc for documentation. Now, I am looking to use the best tool for S4 ...
    Jun 21, 2009 at 4:57 am
    Jun 22, 2009 at 4:18 pm
  • Hi, How do I use the string content of a string variable to reference a data frame of the same name? I want to do the typical tasks of 1) building a name with a string variable and using the string ...
    Payam MinoofarPayam Minoofar
    Jun 12, 2009 at 10:00 pm
    Jun 16, 2009 at 12:15 am
  • Hi list! An operation that I often need is splicing two vectors: [1] 1 4 2 5 3 6 For numeric vectors I use this hack: splice <- function(x, y) { xy <- cbind(x, y) xy <- t(xy) dim(xy) <- length(x) * 2 ...
    Titus von der MalsburgTitus von der Malsburg
    Jun 9, 2009 at 9:12 am
    Jun 11, 2009 at 8:01 am
  • Dear all, I recently saw a graph on television that displayed selected words/phrases in a speech scaled in size according to their frequency. So words/phrases that were often used appeared large and ...
    Brown, Tony NicholasBrown, Tony Nicholas
    Jun 7, 2009 at 6:41 pm
    Jun 10, 2009 at 3:23 pm
  • Hi, I have gote the following data x1 <- c(rep(1,6),rep(4,7),rep(6,10)) x2 <- rnorm(length(x1),6,1) data <- data.frame(x1,x2) and I would like to compute the mean of the x2 for each individual of x1, ...
    amor Gandhiamor Gandhi
    Jun 8, 2009 at 12:11 pm
    Jun 8, 2009 at 1:03 pm
  • Hallo all, I`ve read a lot of things in this forum about an Excel export via R. It is no problem to export my data frames via write.table or write.xls (xls or csv), but some things are not very ...
    Jun 3, 2009 at 12:29 pm
    Jun 8, 2009 at 1:37 am
  • Hi R-helpers! I have the following object: caedois b1 b2 b3 1 1 0,033120395 -20,29478338 -0,274638864 2 2 -0,040629634 74,54239889 -0,069958424 3 5 -0,001116816 35,2398622 0,214327185 4 10 0,171875 5 ...
    Cecilia CarmoCecilia Carmo
    Jun 1, 2009 at 5:01 pm
    Jun 1, 2009 at 9:40 pm
  • Dear R community, I'm starting to learn the MS-VAR methodology and I would like to know what I need to download (e.g. packages) to make MS-VAR estimations using R. Best, Henrique C. de Andrade ...
    Jun 15, 2009 at 5:10 pm
    Sep 1, 2011 at 9:07 pm
  • Hi all, Do you know of any good resources for learning how S3 works? I've some how become familiar with it by reading many small pieces, but now that I'm teaching it to students I'm wondering if ...
    Hadley WickhamHadley Wickham
    Jun 18, 2009 at 4:06 pm
    Jul 2, 2009 at 2:30 pm
  • Dear colleagues, I'm searching for methods to analyze spatial distributions of cells with certain properties in a regular grid. For instance, consider a grid, where a part of the cells have the ...
    Peter BiberPeter Biber
    Jun 23, 2009 at 2:21 pm
    Jul 2, 2009 at 9:50 am
  • Hello, Is there a command for freeing up the memory used by R in holding data tables? The structure of the procedure I have is as follows: 1) Read multiple txt files in using read.table(...). 2) ...
    Jun 30, 2009 at 9:15 am
    Jul 1, 2009 at 10:09 am
  • Dear all, I am not sure what I am doing wrong, but I have some unexplained behaviour when saving a lattice graph including text to a pdf file. The text seems to move around. It must have something to ...
    Willem VervoortWillem Vervoort
    Jun 26, 2009 at 4:50 am
    Jun 28, 2009 at 10:44 pm
  • Hi, When I define a new class (through setClass), members defined in representation argument doesn't seem to like a class. For example, if I do the following ...
    R_help HelpR_help Help
    Jun 28, 2009 at 2:01 am
    Jun 28, 2009 at 10:14 am
  • Hi R-helpers, I have a dataframe with 60columns and I would like to convert several columns to factor, others to numeric, and yet others to dates. Rather than having 60 lines like this ...
    Mark NaMark Na
    Jun 23, 2009 at 9:23 pm
    Jun 25, 2009 at 11:57 am
  • Greetings! Can someone provide a simple script for a R function that recursively builds a binary tree. I am most familiar with C and pass by reference, but I think R is like Fortran and pass by ...
    Mike BeddoMike Beddo
    Jun 24, 2009 at 6:02 pm
    Jun 25, 2009 at 9:06 am
  • Hi, I've got the following problem which I cannot think of a solution right now: if got a lattice xyplot in black and white and a grouping variable with many (more than 8 values) and I plot it as ...
    Katharina MayKatharina May
    Jun 24, 2009 at 7:28 pm
    Jun 24, 2009 at 10:25 pm
  • I posted this question way down at teh end of another thread realted to an error in step, but that was stupid since it really is another matter altogether. I should have posted it separately, as I ...
    Chris FriedlChris Friedl
    Jun 23, 2009 at 3:38 am
    Jun 23, 2009 at 11:52 pm
  • Hi R-list, I'll apologize in advance for (1) the wordiness of my note (not sure how to avoid it) and (2) any deficiencies on my part that lead to my difficulties. I have an application with several ...
    Clifford LongClifford Long
    Jun 22, 2009 at 4:04 pm
    Jun 23, 2009 at 2:09 am
  • Hi, I have a list made up of character strings with each item a different length (each item is between 1and 6 strings long). Is there a way to convert a "ragged" list to a matrix such that each item ...
    Kenneth TakagiKenneth Takagi
    Jun 22, 2009 at 11:15 pm
    Jun 23, 2009 at 1:55 am
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