Grokbase Groups R r-help March 2008

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889 discussions - 2,751 posts

  • Trying to set up multiple spawns of R ------------------------------------------- Hi. I'm new to the list but I have a small problem with R. I'm trying to set up multiple spawns of R active at the ...
    Guy PerryGuy Perry
    Mar 1, 2008 at 1:51 pm
    Mar 25, 2008 at 7:35 pm
  • Hi Folks, Apologies to anyone who'd prefer not to see this query on this list; but I'm asking because it is probably the forum where I'm most likely to get a good answer! I'm interested in the ...
    Ted HardingTed Harding
    Mar 2, 2008 at 1:33 pm
    Mar 4, 2008 at 1:34 pm
  • Please read this first: It's a reasoned discussion of why it's a bad idea and proposes some alternative ...
    Hadley wickhamHadley wickham
    Mar 25, 2008 at 10:29 pm
    Jun 8, 2008 at 10:42 pm
  • Dear useRs, I have several problems in using rgl-0.77 (and recent earlier versions) on Gentoo Linux with a custom-built v. 2.6.22 kernel. Currently I use R-2.6.1. When I build rgl, # R CMD INSTALL ...
    Liviu AndronicLiviu Andronic
    Mar 16, 2008 at 7:38 pm
    Apr 10, 2008 at 6:18 am
  • I am trying to generate a set of random numbers that fulfill the following constraints: X1 + X2 + X3 + X4 = 1 aX1 + bX2 + cX3 + dX4 = n where a, b, c, d, and n are known. Any function to do this? ...
    Ala' JaouniAla' Jaouni
    Mar 26, 2008 at 6:13 pm
    Mar 27, 2008 at 3:17 pm
  • I have a set of character vectors of uneven length that I have stored in a list. I can easily enough get any column of them using lapply but what I want is to be able to create a matrix of them ...
    John KaneJohn Kane
    Mar 13, 2008 at 6:03 pm
    Mar 14, 2008 at 5:57 pm
  • Is there a way to rename R objects? I am looking for a way to rename objects without making new objects. #For example: x = c(1:40) # I wish to use a function to rename x, already created, to y, ...
    Giles CraneGiles Crane
    Mar 3, 2008 at 9:20 pm
    Mar 4, 2008 at 3:50 pm
  • Dear list readers, I want to: 1. Get a table of basic descriptive statistics for my variables with the variable names one below the other like SPSS descriptive statistics: Varname N Min Max Mean SD ...
    Mar 17, 2008 at 6:05 pm
    Mar 19, 2008 at 10:15 am
  • Dear All, I am trying to solve the optimization problem below, but I am always getting the following error: Error in optim(rep(20, nvar), f, gr, method = "L-BFGS-B", lower = rep(0, : L-BFGS-B needs ...
    Paul SmithPaul Smith
    Mar 31, 2008 at 11:24 am
    Apr 3, 2008 at 8:00 pm
  • 1. I have used gdata::read.xls() with much happiness. But every now and then it breaks. I have not, as yet, been able to construct a mental model about the class of .xls files for which it works ...
    Ajay ShahAjay Shah
    Mar 7, 2008 at 11:17 am
    Mar 11, 2008 at 3:41 pm
  • Hi ! I am a new user and quite confused by R-indexing. Make a list and get the attributes lst <- list(x = 1:3, y = 4:6, z = 7:9) attributes(lst) This returns: $names [1] "x" "y" "z" I can easily do ...
    Tribo LaboyTribo Laboy
    Mar 27, 2008 at 4:16 am
    Mar 27, 2008 at 2:11 pm
  • Hi, I wanted to download a file and did the following: --------------------------------------------------------- trying URL ...
    Paul EvansPaul Evans
    Mar 18, 2008 at 3:46 pm
    Mar 18, 2008 at 6:09 pm
  • Hi, I am trying to get percentages in a more elegant way. I have a data.frame with locations and values (counts) of species at that location. Each location is repeated for each species i have values ...
    Monica PisicaMonica Pisica
    Mar 13, 2008 at 1:36 pm
    Mar 13, 2008 at 5:57 pm
  • What is the simplest way to specify the location of text in a scatter plot (created using the plot function) in relative terms rather than specific x-y coordinates? For example, rather than putting ...
    Tom La BoneTom La Bone
    Mar 12, 2008 at 2:33 pm
    Mar 13, 2008 at 10:55 am
  • Dear ALL: I have two quick questions about how to perform some steps in R. Could you please see the attached MS file if the data not clean enough in this email. Thank you so much for all your helps ...
    AbouEl-Makarim AboueissaAbouEl-Makarim Aboueissa
    Mar 1, 2008 at 10:07 pm
    Mar 3, 2008 at 8:49 pm
  • Dear R-helpers, I'm running Sweave() on a file. First run: Writing to file 20080331.tex Processing code chunks ... 1 : term hide (label=setup) 2 : echo term verbatim (label=oatvar) 3 : echo term ...
    Michael KubovyMichael Kubovy
    Mar 30, 2008 at 1:47 am
    Mar 31, 2008 at 12:15 pm
  • Hi, Is there are function similar to excel vlookup in R. Please let me know. Thanks, Sachin ____________________________________________________________________________________
    Sachin JSachin J
    Mar 24, 2008 at 2:24 pm
    Mar 24, 2008 at 5:30 pm
  • Hello, R-i-zens. I'm working on an data set with a factorial ANOVA that has a significant interaction. I'm interested in seeing whether the simple effects are different from 0, and I'm pondering how ...
    Jarrett ByrnesJarrett Byrnes
    Mar 4, 2008 at 7:45 pm
    Mar 6, 2008 at 4:21 pm
  • Hi there! In my case, cor(d[1:20]) makes me a good correlation matrix. Now I'd like to have it one sided, means only the left bottom side to be printed (the others are the same) and I'd like to have ...
    Martin KaffankeMartin Kaffanke
    Mar 5, 2008 at 4:52 pm
    Jan 25, 2009 at 6:33 pm
  • hi, library(lattice) x<-c(-1,-1,-1,0,0,0,0,1,1,2) rng<-range(x) histogram(x,endpoints=c(rng[1]-0.5,rng[2]+0.5),nint=length(unique(x))) instead of contiguous bins, i'd like spaces between them to ...
    Erwann RogardErwann Rogard
    Mar 27, 2008 at 6:59 pm
    Aug 27, 2008 at 3:32 pm
  • Hello, I want to be able to make a plot that has several series with different color and linetype. Online documentation suggest that this is possible, but I haven't found how: "We can also create ...
    Tribo LaboyTribo Laboy
    Mar 25, 2008 at 4:48 pm
    Apr 4, 2008 at 7:11 am
  • Hi R, I have an excel file in which the third column is "date" and others are "character" and "numeric". Number of columns are 12 If I use this to read the file in R: x = read.xls("D:\\file.xls") The ...
    Utkarsh SinghalUtkarsh Singhal
    Mar 25, 2008 at 2:00 pm
    Mar 26, 2008 at 2:44 pm
  • Dear R People: I want to get the class of all of the objects in my directory. I was trying:,list=ls()) but got an "unused argument error". I'm sure it's simple, but I'm just not seeing ...
    Erin HodgessErin Hodgess
    Mar 19, 2008 at 3:39 am
    Mar 19, 2008 at 7:35 pm
  • Dear R Admins, I received an unsolicited e-mail from BlueInference as an R user. Does it mean that R that our e-mails (and names) is sharing it's user database with third parties without our consent? ...
    Gorden T JemwaGorden T Jemwa
    Mar 18, 2008 at 12:08 pm
    Mar 19, 2008 at 2:42 pm
  • Hi, has anybody encountered and solved the following problem? I continued work now on a different computer where I have also used Sweave successfully before. I can run Sweave() and it generates a ...
    Werner WernersenWerner Wernersen
    Mar 19, 2008 at 9:53 am
    Mar 19, 2008 at 1:32 pm
  • I cannot access internet through R. My IT-guys told me that I should set the proxy and the port and then everything will be fine. Where can I set them? I use R 2.6.2 under Windows 2000 and these ...
    Thomas SteinerThomas Steiner
    Mar 10, 2008 at 11:56 am
    Mar 13, 2008 at 11:57 am
  • Howdy, In SPSS, there are 2 ways to weight a least squares regression: 1. You can do it from the regression menu. 2. You can set a global weight switch from the data menu. These two options have no, ...
    Ben DomingueBen Domingue
    Mar 10, 2008 at 3:04 pm
    Mar 12, 2008 at 12:14 pm
  • Hi guys, I've got tthe following question: Why do my fonts look a bit grubby when I use the jpeg() function? I see the pixels of the font. The quality is set to 100%. If this is normal with jpeg(), ...
    Thomas SchwanderThomas Schwander
    Mar 11, 2008 at 7:44 am
    Mar 11, 2008 at 12:12 pm
  • Dear All, In a package, I want to use some C code where I am using a structure (as the basic element of a linked list) with flexible array members. Basically, this is a structure where the last ...
    Ramon Diaz-UriarteRamon Diaz-Uriarte
    Mar 5, 2008 at 10:25 am
    Mar 6, 2008 at 11:47 am
  • Dear all, I did a non-linear least square model fit y ~ a * x^b (a) nls(y ~ a * x^b, start=list(a=1,b=1)) to obtain the coefficients a & b. I did the same with the linearized formula, including a ...
    Wolfgang WaserWolfgang Waser
    Mar 5, 2008 at 1:53 pm
    Mar 6, 2008 at 10:06 am
  • Good evening to everybody, I have problems to import in R a really big dataset (more than 1000000 values). Which is the best package to install? Is there someone who works with this kind of dataset ...
    Erika FrigoErika Frigo
    Mar 4, 2008 at 4:35 pm
    Mar 6, 2008 at 5:31 am
  • Hi all I am trying to determine the distances between two datasets of x and y points. The number of points in dataset One is very small i.e. perhaps 5-10. The number of points in dataset Two is ...
    Andrew McFaddenAndrew McFadden
    Mar 12, 2008 at 8:47 pm
    Mar 18, 2010 at 4:21 am
  • Hi, I produced this graph with R and I am very happy with it. But now I wonder: Is this some standard way of displaying data and if so, does it have ...
    Mar 28, 2008 at 12:37 pm
    Mar 30, 2008 at 5:00 pm
  • I think I've gotten my Emacs/Sweave/R system set up correctly, thanks to Vincent and Jim, but I haven't been successful getting my first document produced. I'm trying to use one of Friedrich Leisch's ...
    Zembower, KevinZembower, Kevin
    Mar 24, 2008 at 8:14 pm
    Mar 26, 2008 at 6:52 am
  • Hi all Is there a function that can find the start and end position of peaks in a set of numbers. eg. x=c(14,15,12,11,12,13,14,15,16,15,14,13,12,11,14,12) y=somefunction(x) y 4 14 Thanks John
    Research ScholarResearch Scholar
    Mar 25, 2008 at 2:54 am
    Mar 25, 2008 at 3:25 pm
  • Hello all: Is there a function in R to estimate the Inverse t-distribution(tif in Systat).If so how can I see an example on how is used? Thanks Felipe D. Carrillo Fishery Biologist Department of the ...
    Felipe CarrilloFelipe Carrillo
    Mar 24, 2008 at 1:18 am
    Mar 25, 2008 at 7:49 am
  • Dear Rusers, I am now using R and SAS to fit the piecewise linear functions, and what surprised me is that they have a great differrent result. See below. #R code--Knots for distance are 16.13 and ...
    Zhijie zhangZhijie zhang
    Mar 24, 2008 at 9:23 am
    Mar 24, 2008 at 7:17 pm
  • R users, I have a vector of dates days <- seq(as.Date("2007/1/1"), as.Date("2008/1/31"), "days") and I would like to have week numbers from 1 to 52 for each year. How do I do that? Now I get 00-53 ...
    Lauri NikkinenLauri Nikkinen
    Mar 18, 2008 at 11:55 am
    Mar 22, 2008 at 2:57 pm
  • Hello I am trying to import an *.xls spreadsheet into R. I am doing this as follows: But obtain the error: Error in type.convert(data[[i]], =[i], dec = dec, na.strings = character(0)) ...
    Mar 20, 2008 at 10:28 pm
    Mar 21, 2008 at 9:01 pm
  • Dear R users/gurus, I have recently installed Ubuntu 7.10 (Gutsy) on my Dell Latitude D520. First time for me, as I have always used Fedora. R installation using "apt" has proceeded fine, both for ...
    Foadi, J (James)Foadi, J (James)
    Mar 17, 2008 at 3:32 pm
    Mar 18, 2008 at 2:38 pm
  • Hi, Was wondering if it is possible to pass function name as a parameter, smth along this line<-c(1,'max','h') dd<-function(dfd,,...){ <- format(ttime,fmt) ...
    Yuri VolchikYuri Volchik
    Mar 7, 2008 at 11:06 am
    Mar 10, 2008 at 4:04 pm
  • temp.ttt <- "ttt <- 1\nttt" conn.ttt <- textConnection(temp.ttt) source(conn.ttt, echo=TRUE) ## name of variable is echoed close(conn.ttt) cat(file="c:/temp/temp.R", temp.ttt) ## name of variable not ...
    Richard M. HeibergerRichard M. Heiberger
    Mar 10, 2008 at 2:01 am
    Mar 10, 2008 at 3:52 am
  • Dear Rers, I understand that I can include R-code in LaTeX using Sweave. Is there a way to do it the other way round? Particularly, I need some TeX symbols in the legend of an R-plot. This can be ...
    Mario MaiwormMario Maiworm
    Mar 7, 2008 at 1:43 pm
    Mar 7, 2008 at 5:19 pm
  • Hello all, I am trying to use m <- seq(-1,1,0.1) x1 <- vector() x2 <- vector() for(i in m){ x1[i] <- i x2[i] <- i^2 } dat <- data.frame(x1,x2) But, I have false result x1 x2 1 1 1 could some tell me ...
    Neuer ArkadaschNeuer Arkadasch
    Mar 5, 2008 at 2:59 pm
    Mar 6, 2008 at 1:30 pm
  • Hi there! I use an gnome-terminal for using R. When I resize the termial to the maximum size, R uses only the left side of the window. Can I tell R to use the whole window somehow? Thanks, Martin -- ...
    Martin KaffankeMartin Kaffanke
    Mar 4, 2008 at 11:04 am
    Mar 5, 2008 at 12:37 pm
  • Hi, there, I cannot get accurate value for calculation. for example: ld<-sqrt(1*0.05*0.95*0.05*0.95) 0.05*0.95-ld=-6.938894e-18 0.05*0.95-ld==0 is False. I met this problem in my program, how can I ...
    Xuejun QinXuejun Qin
    Mar 3, 2008 at 5:52 pm
    Mar 4, 2008 at 12:20 pm
  • Can someone explain me this spec.pgram effect? Code: period.6<-c(0,0,0,0,0,10,0,0,0,0,0,10,0,0,0,0,0,10,0,0,0,0,0,10,0,0,0,0,0,10 ,0,0,0,0,0,10,0,0,0,0,0,10,0,0,0,0,0,10,0,0,0,0,0,10,0,0,0,0,0,10) ...
    Nuno PristaNuno Prista
    Mar 27, 2008 at 3:36 pm
    May 14, 2010 at 11:32 am
  • Dear list, Is there any way of making barplots as a Trellis graphic? Currently I do something like: class <- unique(mydata[,1]) par(mfrow=c(3,3)) for(i in class){ sel <- mydata[mydata[,1]==i,] ...
    Agustin LoboAgustin Lobo
    Mar 26, 2008 at 9:24 pm
    Mar 28, 2008 at 11:58 am
  • I have been trying to run this analysis and finally want to ask for help. I am trying to run a paired t-test in which I have 19 subjects who have reaction times for 5 different conditions. The data ...
    James RootJames Root
    Mar 26, 2008 at 6:53 pm
    Mar 27, 2008 at 11:14 pm
  • I would like to compare two data sets saved as text files (example below) to determine if both sets are identical(or if dat2 is missing information that is included in dat1) and if they are not ...
    Mar 25, 2008 at 3:19 pm
    Mar 26, 2008 at 10:58 am
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