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515 discussions - 1,714 posts

  • Dear Federico, see: ? shapiro.test(stats) Shapiro-Wilk Normality Test and ? jarque.bera.test(tseries) Jarque-Bera Test They are the most common tests used for normality testing. Ciao Vito Federico ...
    Vito RicciVito Ricci
    Oct 15, 2004 at 10:37 am
    Oct 18, 2004 at 3:28 pm
  • Is there an R wiki? Looking at the huge amount of traffic on this list, I think wiki could be an exelet outlet for all the constructive enthusiasm here. I don't think it would be too hard to port the ...
    Dan BolserDan Bolser
    Oct 6, 2004 at 11:20 pm
    Oct 8, 2004 at 7:15 pm
  • I've rolled up R-2.0.0.tar.gz a short while ago. This is a new version with a number of new features. See below for the details. As was the case with R 1.0.0, this new version represents a coming of ...
    Peter DalgaardPeter Dalgaard
    Oct 4, 2004 at 3:29 pm
    Oct 6, 2004 at 12:09 pm
  • I have: d <- sample(10:100, 9) o <- order(d) r <- d[o] How I can get d (in the original order), knowing only r and o? Thanks - Wolfram
    Wolfram FischerWolfram Fischer
    Oct 4, 2004 at 2:21 pm
    Oct 4, 2004 at 6:02 pm
  • I thought that the function eigen(A) will return a matrix with eigenvectors that are independent of each other (thus forming a base and the matrix being invertible). This seems not to be the case in ...
    Christian JostChristian Jost
    Oct 19, 2004 at 8:18 am
    Oct 21, 2004 at 8:55 pm
  • Dear all, I am doing 200 times simulation. For each time, I generate a matrix and define some function on this matrix to get a 6 dimension vector as my results. As the loop should be slow, I generate ...
    Zhen PangZhen Pang
    Oct 16, 2004 at 4:50 am
    Oct 20, 2004 at 7:05 am
  • Hello, I try to set up namespaces for packages. It is fine for several of them, except one whose compilation fails (under Windows XP & R 2.0.0): ---------- Making package svViews ------------ adding ...
    Philippe GrosjeanPhilippe Grosjean
    Oct 17, 2004 at 1:55 pm
    Oct 19, 2004 at 1:14 pm
  • I've generated a version of the classic dotplot of the barley data with library(lattice) data(barley) trellis.device("postscript", color=TRUE, file="barley2x3.ps") old.settings <- trellis.par.get() ...
    Michael FriendlyMichael Friendly
    Oct 1, 2004 at 3:09 pm
    Oct 3, 2004 at 2:03 am
  • library (ellipse) shape1 = c (1, 0, 0,1) dim(shape1) = c(2,2) ellipse (center = c(0,0), shape = shape1, radius = 1) ============================= Error in plot.xy(xy.coords(x, y), type = type, col = ...
    SunSun
    Oct 27, 2004 at 8:34 am
    Oct 28, 2004 at 9:18 am
  • Hi people, Does anybody know some Density-Based Method for clustering implemented in R? Thanks, Fernando Prass _______________________________________________________
    Fernando PrassFernando Prass
    Oct 21, 2004 at 11:48 am
    Oct 21, 2004 at 6:50 pm
  • R-help I have a martix with missing values( in which I want the sample size by column) When I : apply(matrix,2,length) I get the length of the vector regardless of missing values. I can't pass an ...
    Luis Rideau CruzLuis Rideau Cruz
    Oct 15, 2004 at 11:01 am
    Oct 15, 2004 at 12:11 pm
  • Hi, I've a list containing parameters (intercepts & coefficients) of 12 regressions fitted [[1]] (Intercept) anno -427017.1740 217.0588 [[2]] (Intercept) anno -39625.82146 21.78025 ..... [[12]] ...
    Vito RicciVito Ricci
    Oct 22, 2004 at 11:21 am
    Oct 22, 2004 at 5:20 pm
  • Dear R-help, This one is probably a piece of cake for regexp masters. I'd like to split a character vector (for simplicity, say of length one for now) that contains fields that are delimited by ...
    Liaw, AndyLiaw, Andy
    Oct 20, 2004 at 12:15 pm
    Oct 21, 2004 at 5:55 am
  • I am trying to process text fields scanned in from a csv file that is output from the Windows database program FileMakerPro. The characters onscreen look like regular text, but R does not like their ...
    Scott WaichlerScott Waichler
    Oct 14, 2004 at 6:31 pm
    Oct 16, 2004 at 8:51 am
  • After wasting one whole day, I've finally decided to stay with 1.9.1, some problems have been reported to R-Bugs. For occasional users, I would say, there's no worst thing than that: you installed ...
    FanFan
    Oct 10, 2004 at 4:11 pm
    Oct 11, 2004 at 1:51 pm
  • Sorry if these questions have been asked recently--I'm new to this list. I'm primarily a Matlab user who is attempting to learn R and I'm searching for possible equivalents of commands that I found ...
    Bryan L. BrownBryan L. Brown
    Oct 7, 2004 at 2:10 pm
    Oct 7, 2004 at 3:14 pm
  • Hello, I have a data frame that has three fields. Resp# ActCode ProdUsed 100 3 2 100 3 2 100 4 3 100 4 3 101 3 6 102 2 1 102 3 1 103 5 1 103 5 1 103 3 2 103 3 2 104 3 1 What I seek to do. If a row ...
    Greg BlevinsGreg Blevins
    Oct 6, 2004 at 8:26 pm
    Oct 7, 2004 at 9:55 am
  • Dear list, I am brand new to R and using Dalgaard's (2002) book Introductory Statistics with R (thus, some of my terminology may be incorrect). I am fitting regression models and I want to use ...
    Thomas W VolschoThomas W Volscho
    Oct 31, 2004 at 5:41 pm
    Nov 1, 2004 at 1:47 pm
  • Hi All: A couple of weeks back, I asked a question on the list that I was invited to provide an introductory lecture on R to a group of academicians in Kolkata. I thank all of you who had generously ...
    Arin BasuArin Basu
    Oct 25, 2004 at 2:33 pm
    Oct 26, 2004 at 7:50 pm
  • Hi, I have a package of my own which seems to work fine under linux. I want to make a compiled version for windows. (I work with windows 2000 and R 2.0) I have followed the steps described in the ...
    Gilles GUILLOTGilles GUILLOT
    Oct 25, 2004 at 5:10 pm
    Oct 26, 2004 at 10:33 am
  • Hello Everyboby: Could I consult everyboby two problems about plot. Recently, I am doing some analysis in plot. Now I can draw boxplot in R , but the result's plot loss some of the x-coordinates. I ...
    Ivy_LiIvy_Li
    Oct 15, 2004 at 8:17 am
    Oct 18, 2004 at 4:54 am
  • Dear R- users and Helpers I am a beginner for R. I am using R to implement EM algorithm for treating Missing values. I would like to know how can save or compile my logical R commands to an ...
    Kunal ShettyKunal Shetty
    Oct 7, 2004 at 3:14 pm
    Oct 13, 2004 at 4:32 pm
  • Hello, I am hoping someone can help me with the following multivariate issue: I have a model consisting of about 50 covariates. I would like to reduce this to about 5 covariate for the reduced model ...
    Ian FiskeIan Fiske
    Oct 12, 2004 at 9:07 pm
    Oct 13, 2004 at 1:18 am
  • dear all, i've looked at the r-intro (chapter 10, writing your own functions) and searched the r-help archives but am still stuck at the following. i have a simple function, something like ...
    Edwin LeuvenEdwin Leuven
    Oct 11, 2004 at 11:20 am
    Oct 11, 2004 at 3:19 pm
  • I have the following contingency table dat <- matrix(c(1,506,13714,878702),nr=2) And I want to test if their is an association between events A:{a,not(a)} and B:{b,not(b)} --------+-----+--------+ a ...
    Dan BolserDan Bolser
    Oct 9, 2004 at 5:18 pm
    Oct 10, 2004 at 7:34 pm
  • Hello, I installed R 2.0.0/Windows on our network server (Win NT 4.0) with all CRAN packages and observed a quick startup on this machine (3s). However, when startet from different client machines ...
    Thomas PetzoldtThomas Petzoldt
    Oct 6, 2004 at 12:11 pm
    Oct 7, 2004 at 11:46 am
  • Hi there fellow R-users, Im seeing some strange behaviour when I multiply a vector by a matrix Here is my script: 1 2 3 4 5 6 0.2217903 0.1560525 0.1487908 0.1671354 0.1590643 0.1471667 a b c d e f 1 ...
    Wayne JonesWayne Jones
    Oct 4, 2004 at 2:10 pm
    Oct 4, 2004 at 3:35 pm
  • I want to read data from a number of files into R. Reading individual files one by one requires writing enormous amount of code that will look something like the following. **************** ...
    Vikas RawalVikas Rawal
    Oct 1, 2004 at 5:20 am
    Oct 3, 2004 at 12:17 pm
  • Hi, Everyone: We are installing R package in our Sun Solaris 9, and falling in trouble. We downloaded all package from bioconductor, the R can not be installed in Sun Solaris 9. We greatly ...
    SongjSongj
    Oct 22, 2004 at 4:58 pm
    Nov 1, 2004 at 1:52 pm
  • Hi all, Simple and direct question.... Is it possible to add a shorter column to a data frame or matrix in such a way that the missing values are replaced with NAs? For example suppose I have 3 2 4 2 ...
    Federico GherardiniFederico Gherardini
    Oct 26, 2004 at 1:46 pm
    Oct 27, 2004 at 2:14 am
  • Dear list I have a vector of values that allegedly have a bivariate normal distribution. I want to create a plot that shows the values I have obtained, and the bivariate normal distribution curve for ...
    Sarah englishSarah english
    Oct 23, 2004 at 12:34 pm
    Oct 26, 2004 at 2:09 am
  • Hi, Rusers: Thanks for answering my last questions. I am frustrated in plotting a trinomial pmf function f(x,y | n, pa, pb) = factorial(n)/ (factorial(x) * factorial(y) * factorial (n-x-y))* pa^x * ...
    SunSun
    Oct 17, 2004 at 2:59 am
    Oct 17, 2004 at 6:19 am
  • Dear R users, I have a column with dates (character) in a data frame: 12-Jan-01 11-Jan-01 10-Jan-01 9-Jan-01 8-Jan-01 5-Jan-01 and I need to convert them to (Julian) dates so that I can sort the ...
    Bogdan romoceaBogdan romocea
    Oct 11, 2004 at 3:04 pm
    Oct 12, 2004 at 11:56 pm
  • a <- data.frame(b = rep(1:5, each=2), c=factor(rep("a",10), levels=c("a","b"))) levels(subset(a, b=1, drop=T)$c) # [1] "a" "b" Is this a bug? Thanks,, Hadley
    Hadley wickhamHadley wickham
    Oct 7, 2004 at 5:27 pm
    Oct 8, 2004 at 12:30 am
  • Hi, I am probably making a simple mistake but I can't see it [[1]] [1] TRUE Why is lapply producing true? Is it something to do with the first argument of lapply also being called 'X'? platform ...
    John GavinJohn Gavin
    Oct 6, 2004 at 4:18 pm
    Oct 6, 2004 at 6:08 pm
  • Dear all, I am trying to install packages with the new R 2.0.0. However for several packages, like MASS, lattice or R2HTML, I get an error like: Error in library(lattice) : 'lattice' is not a valid ...
    Stefan AlbrechtStefan Albrecht
    Oct 6, 2004 at 11:59 am
    Oct 6, 2004 at 12:56 pm
  • Hello, I searched the archives but could not come to a solution. I have to two columns of information t_start_cdt looks like: [1] "2003-07-09 11:02:25" "2003-07-09 11:10:25" "2003-07-09 11:30:25" [4] ...
    GotroutGotrout
    Oct 5, 2004 at 5:27 pm
    Oct 6, 2004 at 4:51 am
  • Hi Dimitris, thank you for your reply, your solution is really shorter, but has two issues to be meant here: 1. "unique.default" is applied twice, what might be a bit expensive for strings. 2. your ...
    Khamenia, ValeryKhamenia, Valery
    Oct 4, 2004 at 1:16 pm
    Oct 5, 2004 at 8:24 am
  • I am using the hier.part package for calculating the goodness of fit. Before I started with my data I tried to use the example that the package comes with . I have loaded the library hier.part and ...
    T. Murlidharan NairT. Murlidharan Nair
    Oct 1, 2004 at 4:07 pm
    Oct 1, 2004 at 6:27 pm
  • Hi, Why this code is good in S-plus, and don't good in R ? getMethod("[","matrix") thanks
    Jean-Luc aLLARDJean-Luc aLLARD
    Oct 14, 2004 at 3:34 pm
    Oct 31, 2004 at 9:42 am
  • Hi, How to add values to an array at any position. Asking because of the following: e.g. y<-c(0.1,NaN,0.2,NaN) #or data frame x<-na.omit(y) take some columns from x and do some computation with ...
    Witold Eryk WolskiWitold Eryk Wolski
    Oct 30, 2004 at 10:20 pm
    Oct 31, 2004 at 8:47 am
  • hi, I like to find a pattern within a giver sequence. There might be multiple occurences of the pattern. I like to know the number of occurences and the positions if possible. "grep" can tell me if a ...
    Sean LiangSean Liang
    Oct 29, 2004 at 6:06 pm
    Oct 30, 2004 at 12:29 am
  • Firstly hi to everyone on the list, I am new to this list ans also R so please forgive the simplicity of my questions over the next few months. I have version R 1.9.1 and want to perform z-scoring ...
    Michael GriffithsMichael Griffiths
    Oct 29, 2004 at 11:35 am
    Oct 29, 2004 at 1:28 pm
  • Hello list. I very often need 3d scatterplots, and use scatterplot3D quite a lot. I am trying to modify persp() to plot scatterplots, and make use of the theta and phi arguments that persp() offers ...
    Robin HankinRobin Hankin
    Oct 26, 2004 at 10:28 am
    Oct 27, 2004 at 7:49 pm
  • Dear R- User I created two random number sets using rnorm function and calcuted their respective means. However now I would like to randomly replace some values with NA. Thus create my own test ...
    Kunal ShettyKunal Shetty
    Oct 27, 2004 at 4:59 pm
    Oct 27, 2004 at 7:16 pm
  • Dear R- helpers Following a draft structure of the R script for which I am facing problem Step 1 x <- of type array with original values y <- of type array with original values Step 2 for (ctr in ...
    Kunal ShettyKunal Shetty
    Oct 25, 2004 at 6:20 pm
    Oct 26, 2004 at 9:29 am
  • Hello, I like to save the complete state of R, i.e. including all environments, objects/workspaces, loaded packages etc.. This wish has arisen since I am not able to reproduce an error which occurs ...
    Andreas BunessAndreas Buness
    Oct 22, 2004 at 5:05 pm
    Oct 25, 2004 at 6:10 pm
  • Is there any function like par(new=T) for lattice. I want to plot a histogram in percentages on the right hand side and also superimpose the densityplot with its density scale on the lhs. so far I am ...
    Jean EidJean Eid
    Oct 19, 2004 at 10:12 pm
    Oct 21, 2004 at 5:43 pm
  • Hi, Is there a neat way of working out the slope of a flat surface in R? Given (x,y,z) co-ordinates of the four corners of a square, is there a function which will allow me to calculate the "mean" ...
    Laura QuinnLaura Quinn
    Oct 19, 2004 at 5:01 pm
    Oct 20, 2004 at 11:13 am
  • Hi, I have the following indexing problem, can you help me please ? Given: dm = a data.frame or a matrix dm, idx = a 2 columns (or any number) matrix with the same number of rows as dm I want get a ...
    Diana ChiracDiana Chirac
    Oct 19, 2004 at 4:49 pm
    Oct 19, 2004 at 8:19 pm
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Prof Brian Ripley: 185 posts Uwe Ligges: 72 posts Gabor Grothendieck: 56 posts Peter Dalgaard: 55 posts Liaw, Andy: 52 posts Thomas Lumley: 33 posts Sundar Dorai-Raj: 32 posts John Fox: 28 posts Kjetil Brinchmann Halvorsen: 25 posts Petr Pikal: 23 posts Dimitris Rizopoulos: 22 posts Duncan Murdoch: 22 posts Marc Schwartz: 20 posts Martin Maechler: 20 posts Roger D. Peng: 17 posts Spencer Graves: 17 posts Kunal Shetty: 16 posts Dan Bolser: 14 posts Deepayan Sarkar: 14 posts Ted Harding: 14 posts
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