Grokbase Groups R r-help May 2006

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646 discussions - 2,030 posts

  • Hello, does R estimate belief networks to estimate chains of causality. Anyone point me to the right direction, or the most developed library? looking at DEAL
    May 19, 2006 at 1:16 am
    Aug 13, 2007 at 10:42 pm
  • Hi all, This may seem like a dumb question, but I work for an entity that is soon converting to XP across the board, and I will lose the ability to install software on my own. The entity has a policy ...
    Damien JolyDamien Joly
    May 18, 2006 at 9:51 pm
    May 23, 2006 at 3:07 pm
  • R is quite a powerful environment. Here's a small way it could be even better. I wanted to change the working directory, so I tried the obvious thing Error: couldn't find function "cd" Then I looked ...
    Issac TrottsIssac Trotts
    May 9, 2006 at 9:50 pm
    May 17, 2006 at 5:12 pm
  • Why am I getting the error "Error: cannot allocate vector of size 512000 Kb" on a machine with 6 GB of RAM? I'm playing with some large data sets within R and doing some simple statistics. The data ...
    Robert CitekRobert Citek
    May 5, 2006 at 3:24 pm
    May 11, 2006 at 12:51 am
  • Dear R wizards: I just got stung by the ifelse() feature. [1] 10 I had not realized that this was the default behavior---I had expected 10:15. mea culpa. however, I wonder whether it would make sense ...
    Ivo welchIvo welch
    May 21, 2006 at 1:27 pm
    May 22, 2006 at 9:27 pm
  • Dear list, When compiling the R-2.3.0 on FC4 x86_64, I got the following errors: make[3]: Entering directory `/project/scratch3/ligroup/wuming/src/R-2.3.0/src/main' gcc -Wl,--export-dynamic ...
    Wuming GongWuming Gong
    May 1, 2006 at 2:59 pm
    May 14, 2006 at 10:24 pm
  • This is a simple question but I cannot seem to find the answer. I have two vectors but with missing data and I want to add them together with the NA's being ignored. Clearly I need to get the NA ...
    John KaneJohn Kane
    May 1, 2006 at 5:26 pm
    May 2, 2006 at 6:43 pm
  • I came across this one: which says that the violent death rate in Iraq (which presumably includes violent deaths from the war) is lower than the violent death rate ...
    Gabor GrothendieckGabor Grothendieck
    May 19, 2006 at 11:54 am
    May 23, 2006 at 1:50 pm
  • Hello all. I have a large .txt file whose variables are fixed-columns, ie, variable V1 goes from columns 1 to 7, V2 from 8 to 23 etc. This is a 60GB file with 90 variables and 60 million ...
    Rogerio PortoRogerio Porto
    May 16, 2006 at 1:33 am
    May 22, 2006 at 6:42 pm
  • Hello all again, I want to do bitwise addition in R. I am trying to generate a matrix 0000 0001 0010 .... .... 1111 I know the other ways of generating this matrix but I need to look at bitwise ...
    Nameeta LoboNameeta Lobo
    May 12, 2006 at 4:41 pm
    May 16, 2006 at 3:55 pm
  • Hello, trying to get something like this to work and am failing: pie( c(length(strongN14),length(weakN14),length(weakN15),length(strongN15),length(ambiguous)), labels = c( = 0.66, = 0.33, <= -0.33, ...
    Johannes GraumannJohannes Graumann
    May 2, 2006 at 11:47 pm
    May 3, 2006 at 5:35 pm
  • Hello, I'm trying to switch from Matlab to R-project, and having some difficulties. I make a use of multidimensional matrices. For example, I need to extract mean from one of the dimensions: % we ...
    Daniil IvanovDaniil Ivanov
    May 29, 2006 at 1:09 am
    May 29, 2006 at 1:12 pm
  • Hi, I'm dealing with wind data and I'd like to model their distribution in order to simulate data to fill-in missing values. Wind direction are typically following a vonmises distribution and wind ...
    Chaouch, AzizChaouch, Aziz
    May 11, 2006 at 8:28 pm
    May 26, 2006 at 6:50 pm
  • Playing around with examples from MASS4, I found a font problem in the mosaicplot in R-2.3.0. It doesn't happen in other plots. Running this example from MASS4, page 326... library(MASS) caith1 <- ...
    Maciej BlizińskiMaciej Bliziński
    May 21, 2006 at 12:48 pm
    May 24, 2006 at 3:15 pm
  • I would like to fit a hierarchical regression model from Witte et al. (1994; see reference below). It's a logistic regression of a health outcome on quntities of food intake; the linear predictor has ...
    Andrew GelmanAndrew Gelman
    May 20, 2006 at 9:49 am
    May 23, 2006 at 10:24 pm
  • I have downloaded R-2.3.0.tar.gz for Linux 64 bit processor 1. Untar tar -zxvf R-2.3.0.tar.gz 2. changed the directory to the newly created directory R-2.3.0 3. Typed ./configure 4. Typed make 5 ...
    Pramod AnuguPramod Anugu
    May 31, 2006 at 2:25 pm
    May 31, 2006 at 8:45 pm
  • We have a PostgreSQL table with about 400000 records in it. Using either RODBC or RdbiPgSQL, what is the fastest way to update one (or a few) column(s) in a large collection of records? Currently ...
    Duncan MurdochDuncan Murdoch
    May 19, 2006 at 3:17 pm
    May 20, 2006 at 3:22 pm
  • I assume that I have missed something fundamental and that it is there in front of me in "An Introduction to R", but I need someone to point me in the right direction. [1] 1159 1129 1124 NA NA NA ...
    Mulholland, TomMulholland, Tom
    May 19, 2006 at 3:47 am
    May 20, 2006 at 12:18 pm
  • Is there a way to do text plots in R? I'd like to do some simple XY plots in R with the output in text (ascii). For example, with gnuplot I can do the following: echo 'set terminal dumb ; plot ...
    Robert CitekRobert Citek
    May 12, 2006 at 2:57 pm
    May 12, 2006 at 4:37 pm
  • I'm trying to install R-GUI on my Mac OSX, but for some reason it is not working. Anyone with a Mac able to answer why I would be getting the following error? I am currently running Mac OS X 10.4.6, ...
    Scott CunninghamScott Cunningham
    May 1, 2006 at 1:09 am
    May 2, 2006 at 8:34 pm
  • Dear all, I have a data.frame which has names as following. [1] "XG1" "YG1" "XEST" "YEST" [2] "XNOEMP1" "XNOEMP2" "YNOEMP1" "YNOEMP2" [3] "XBUS10" "XBUS10A" "XBUS10B" "XBUS10C" [4] "YBUS10" "YBUS10A" ...
    Guo Wei-WeiGuo Wei-Wei
    May 31, 2006 at 1:16 am
    May 31, 2006 at 12:01 pm
  • Hi all, I have a 2D matrix, which has 100 rows, and 100 columns, I have a 2D matrix, with 100 rows and 100 columns, I want to display it using 3D plot, much like plot3d and mesh/surf functions in ...
    May 26, 2006 at 6:45 am
    May 30, 2006 at 12:05 am
  • Hello, If I have two variables that are factors or characters and I want to create a new variable that is the combination of both what function can I use to accomplish this? Ex. Var1 Var2 SA100055113 ...
    Guenther, CameronGuenther, Cameron
    May 24, 2006 at 6:45 pm
    May 25, 2006 at 4:47 pm
  • Hi, I'm trying to add points to 2 plots on the fly using par(mfg=vector) so switch between them. However, the appropriate scales aren't switched when changing from one plot to another, e.g ...
    Yan WongYan Wong
    May 23, 2006 at 11:36 am
    May 24, 2006 at 2:41 pm
  • Hi How can do this in R. 48 1 35 32 80 If df < 30 then replace it with 30 and else if df 60 replace it with 60. I have a large dataset so I cant afford to identify indexes and then replace. Desired ...
    Sachin JSachin J
    May 23, 2006 at 6:40 pm
    May 24, 2006 at 6:24 am
  • I am writing a function to assess the out of sample predictive capabilities of a time series regression model. However lm.predict isn't behaving as I expect it to. What I am trying to do is give it a ...
    Richard LawnRichard Lawn
    May 19, 2006 at 4:32 pm
    May 22, 2006 at 8:43 am
  • I am trying to generate two dimensional random coordinates. For randomly distributed data I have simply used However I also want to generate coordinates that are more uniformly distributed, and ...
    Beutel, Terry SBeutel, Terry S
    May 17, 2006 at 11:18 pm
    May 22, 2006 at 4:46 am
  • Hello! I want to calculate the intra- and interrater reliability of my study. The design is very simple, 5 raters rated a diagnostic score 3 times for 19 patients. Are there methods/funtions in R? I ...
    Karl KnoblickKarl Knoblick
    May 16, 2006 at 10:09 am
    May 17, 2006 at 5:53 am
  • Hi When I use the read.table function with header = T, I notice that it gives me the variable names along the top as I expect. But, when I then attempt an analysis, e.g. regression, it doesn't ...
    David KaplanDavid Kaplan
    May 11, 2006 at 5:38 pm
    May 11, 2006 at 7:30 pm
  • Hello all, I am trying to create a matrix of 1s and -1s without any repetitions for a specified number of columns. e.g. 1s and -1s for 3 columns can be done uniquely in 2^3 ways. -1 -1 -1 -1 -1 1 -1 ...
    Nameeta LoboNameeta Lobo
    May 8, 2006 at 9:32 pm
    May 9, 2006 at 2:15 pm
  • How does one create a vector whose contents is the list of variables in a dataframe pertaining to a particular pattern? This is so simple but I cannot find a straightforward answer. I want to be able ...
    Farrel BuchinskyFarrel Buchinsky
    May 3, 2006 at 2:46 pm
    May 4, 2006 at 8:46 pm
  • I basically has a long data.frame a. but I only need three columns x,y. Let us say the index of row is t. I need to produce new column s_t as the linear regression coefficient of ...
    Guojun ZhuGuojun Zhu
    May 2, 2006 at 2:57 am
    May 3, 2006 at 3:57 am
  • Dear R-Help, I am using R2.3.0, nlme library on Windows XP. I created a grouped data object with y, subject, group and time variables. I can plot the data using ...
    Osman Al-RadiOsman Al-Radi
    May 1, 2006 at 6:14 pm
    May 2, 2006 at 4:35 pm
  • I can't seem to be able to change the font size in an effect display. I've tried the following: but nothing changes. Can anyone help me? thanks. Emilie Berthiaume graduate student Sherbrooke ...
    Emilie BerthiaumeEmilie Berthiaume
    May 24, 2006 at 5:24 pm
    May 26, 2006 at 1:29 pm
  • Hi, n = 10000000 L = list(a=integer(n), b=integer(n)) L[[2]][1:10] gives me the first 10 items of the 2nd vector in the list L. It works fine. However it appears to copy the entire L[[2]] vector in ...
    Matthew DowleMatthew Dowle
    May 23, 2006 at 2:45 pm
    May 23, 2006 at 5:16 pm
  • Hi, Given some example data: dat <- seq(4, 7, by = 0.05) x <- sample(dat, 30) y <- sample(dat, 30) error <- x - y I have broken the rage of x into 10 groups and I can calculate the bias (mean(error)) ...
    Gavin SimpsonGavin Simpson
    May 20, 2006 at 9:01 am
    May 22, 2006 at 4:18 pm
  • Dear all, I have the following problem: I have written a function genereating to plots, eg myfunction <- (data, some.parameters) { #some calculations etc . par (mfrow=c(1,2)) plot1(......) ...
    May 16, 2006 at 2:19 am
    May 21, 2006 at 10:41 am
  • Using R for this would be a bit bone-headed since it is not ideally suited for web apps. Look at an active scripting language like PHP. I'm not sure if Geocities provides for server-side active ...
    Shawn MikulaShawn Mikula
    May 12, 2006 at 7:39 pm
    May 13, 2006 at 9:44 pm
  • I apologize for what may be a newbie question: I have two sets of data, one is X,Y,Z data that I'd like to make a contour plot of (Z defining the contours), and a second set of X,Y data (Y as a ...
    Jonathan GreenbergJonathan Greenberg
    May 10, 2006 at 11:46 pm
    May 13, 2006 at 4:02 pm
  • Dear All, I am having a bit of problem using the DBI and RMySQL package. I have already installed DBI but now I want to connect to MySQL. So how do I do it. The CRAN package repository does not have ...
    Indrajit SenguptaIndrajit Sengupta
    May 9, 2006 at 11:55 am
    May 11, 2006 at 7:20 pm
  • Hi, I have a data frame df and a list of names of columns that I want to turn into factors: df.names <- attr(df,"names") sapply(factors, function (name) { pos <- match(name,df.names) if ( ...
    Sam SteingoldSam Steingold
    May 11, 2006 at 4:09 pm
    May 11, 2006 at 7:15 pm
  • Good morning, I have currently 63 .csv files most of which have lines which look like 01/06/05,23445 Though some files have two numbers beside each date. There are missing values, and currently the ...
    Sean O'RiordainSean O'Riordain
    May 11, 2006 at 8:03 am
    May 11, 2006 at 3:05 pm
  • Hi, all. I'm trying to automate some regression operations in R leaving the possibility to modify the predictors in the regression. For example, I have saved in a list the results and then exported ...
    May 10, 2006 at 3:23 pm
    May 10, 2006 at 6:41 pm
  • Hi, I'm sorry for this not being related to R but I think this is a good place to ask. I'm looking for DOE examples(experiments) that can be done at home or in class, such as Paper Helicopter, Paper ...
    Thomas KaliweThomas Kaliwe
    May 5, 2006 at 1:11 pm
    May 9, 2006 at 4:44 pm
  • I am about one step away from heaven on earth. I think only one step! I am using dgc.genetics to run a TDT test on thousands of genetic loci. I have learnt (through the help of others on this mailing ...
    Farrel BuchinskyFarrel Buchinsky
    May 5, 2006 at 10:54 pm
    May 8, 2006 at 10:57 pm
  • Dear Community, This is largely a repost with some new information. I'm interested in developing a package that could ease the command-line learning curve for new users. It would provide more ...
    Andrew RobinsonAndrew Robinson
    May 4, 2006 at 5:29 am
    May 5, 2006 at 12:53 am
  • Hi all I'm trying to install R 2.3.0 under Suse 10.0. As I'm using SSH to login into the SUSE server, I can't use YAST2, so I have to use rpm -i in the shell. The system tells me that I need some ...
    Zhihua liZhihua li
    May 4, 2006 at 12:28 am
    May 4, 2006 at 7:21 am
  • Hi, Is there a way to define "+" so that "a"+"b" returns "ab" ? Error in setMethod("+", c("character", "character"), paste) : the method for function '+' and signature e1="character", e2="character" ...
    Matthew DowleMatthew Dowle
    May 2, 2006 at 10:43 am
    May 2, 2006 at 5:42 pm
  • Dear All, after searching on CRAN I got the impression that there is no standard way in R to label values of a numerical variable. Since this would be useful for me I intend to create such an ...
    Heinz TuechlerHeinz Tuechler
    May 23, 2006 at 12:17 am
    Jun 5, 2006 at 9:57 am
  • I have this typical problem of joining a number of vectors with similar names - a1, a2,..., a10 - which should be concatenated into one. Using c(a1,a2,a3,a4,a5,a6,a,a8,a9,a10) naturally works, but I ...
    Robert LundqvistRobert Lundqvist
    May 30, 2006 at 12:07 pm
    May 31, 2006 at 7:29 am
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Prof Brian Ripley: 116 posts Gabor Grothendieck: 114 posts Uwe Ligges: 61 posts Spencer Graves: 49 posts Marc Schwartz (via MN): 40 posts Duncan Murdoch: 38 posts Robert Citek: 28 posts Peter Dalgaard: 25 posts Dimitris Rizopoulos: 22 posts Thomas Lumley: 21 posts Deepayan Sarkar: 20 posts Greg Snow: 19 posts Berton Gunter: 18 posts Liaw, Andy: 18 posts Martin Maechler: 18 posts Petr Pikal: 18 posts Chuck Cleland: 17 posts Farrel Buchinsky: 16 posts Peter Ehlers: 15 posts Richard M. Heiberger: 15 posts
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