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361 discussions - 1,158 posts

  • Dear R-user, I already received quite a lot of replies to this mail and like to do a preliminary sum up. A few were sceptical about the use of such a beginner mailing list. The arguments were that ...
    Martin WegmannMartin Wegmann
    Dec 16, 2003 at 1:17 pm
    Dec 19, 2003 at 9:40 pm
  • Hi! Are there scripts or packages for generating Rd files out of "S3" code on cran? Has any one written such scripts (e.g. in Perl?) and are willing to share them? Thanks in advance. Eryk. Dipl ...
    Dec 1, 2003 at 12:21 pm
    Dec 3, 2003 at 9:01 am
  • Here is a first draft of a guide for posters to r-help and r-devel. Suggestions on how to improve any aspect of it are most welcome. Suggestions on ways to make it more concise are especially ...
    Tony PlateTony Plate
    Dec 20, 2003 at 5:55 am
    Dec 26, 2003 at 6:20 pm
  • Dear People, This may not be the right place to ask a question about Rmpi, but I don't know of a better one. I am trying to get a simple program working using Rmpi with the model of 1 R master and n ...
    Faheem MithaFaheem Mitha
    Dec 1, 2003 at 8:23 pm
    Dec 15, 2003 at 5:03 pm
  • Hi all, I am currently building an application based on R 1.7.1 (+ compiled C/C++ code + MySql + VB). I am building this application to work on 2 different platforms (Windows XP Professional (500mb ...
    Richard PughRichard Pugh
    Dec 6, 2003 at 6:41 pm
    Dec 10, 2003 at 3:56 pm
  • When I alter the levels of a factor, why does it alter the names too? f <- factor(c(A="one",B="two",C="one",D="one",E="three"), levels=c("one","two","three")) names(f) -- gives [1] "A" "B" "C" "D" ...
    Damon WischikDamon Wischik
    Dec 17, 2003 at 11:31 am
    Dec 22, 2003 at 9:56 am
  • Hi all, I have some email addresses that I would like to sort in reverse lexicographic order so that addresses from the same domain will be grouped together. How might that be done? Murray -- Dr ...
    Murray JorgensenMurray Jorgensen
    Dec 14, 2003 at 9:08 pm
    Dec 16, 2003 at 5:31 am
  • Hi, I have a data.frame that I need to construct iteratively. At the moment, I'm doing: d<-data.frame(x=c(),y=c(),z=()); # {and, within some loop} d<-rbind(d,data.frame(x=newx,y=newy,z=newz); While ...
    David KreilDavid Kreil
    Dec 9, 2003 at 5:02 am
    Dec 9, 2003 at 5:14 pm
  • Hello, I am not currently using R but I have been using S+ for sevaral years. I think that I fit in the category of power users, never using the GUI prefering the flexibility of a command line ...
    Gerald JeanGerald Jean
    Dec 5, 2003 at 4:32 pm
    Dec 7, 2003 at 11:05 am
  • I am a french student and I want to make an histogram with R.But I have a problem: I cant' change the frequencies in percent and I can't change the number of classes or intervals of my variable.Can ...
    Dec 6, 2003 at 12:56 pm
    Dec 23, 2003 at 3:14 pm
  • Hi all, The last e-mails about beginners gave me the courage to post a question; from a beginner's perspective, there are a lot of questions that I'm tempted to ask. But I'm trying to find the ...
    Adrian DusaAdrian Dusa
    Dec 17, 2003 at 7:28 pm
    Dec 22, 2003 at 10:45 pm
  • + { + print(identical(i,1)) + } [1] FALSE [1] FALSE [1] FALSE [1] FALSE [1] FALSE Why don't I get: [1] TRUE [1] FALSE [1] FALSE [1] FALSE [1] FALSE John Welsh Associate Professor Sidney Kimmel Cancer ...
    John WelshJohn Welsh
    Dec 12, 2003 at 10:47 pm
    Dec 18, 2003 at 7:42 pm
  • Hi, I am new to R (I have most of my experience in SAS and SPSS). I was wondering if anyone has used both Resampling Stats and R, and could comment on strengths/relationships. Also, I have no clue on ...
    Brandon VaughnBrandon Vaughn
    Dec 16, 2003 at 4:45 am
    Dec 18, 2003 at 4:52 pm
  • Hello there fellow R-users, I have received some data which comes in the following format: example1<-"200301" The first 4 digits correspond to the year and the remaining 2 digits correspond to the ...
    Wayne JonesWayne Jones
    Dec 15, 2003 at 11:00 am
    Dec 15, 2003 at 8:28 pm
  • Hi, I have a piece of code originally written for s-plus - I am trying to run it in R now. The code was obtained from someone who is now not available to give any pointers and I am a beginner in R ...
    Ognen DuzlevskiOgnen Duzlevski
    Dec 5, 2003 at 4:33 pm
    Dec 6, 2003 at 4:07 pm
  • Hi, I have simple R question. I have a vector x that contains real numbers. I would like to create another vector col that is the same length of x such that: if x[i] < 250 then col[i] = "red" else if ...
    Arend P. van der VeenArend P. van der Veen
    Dec 2, 2003 at 1:19 am
    Dec 3, 2003 at 1:56 pm
  • Hi, I'm new to R (and math ;) Would somebody please be so kind as to direct me in plotting a 3D sphere? I tried something in the lines of: #### y <- x <- seq(-pi, pi, length=pi*10) f <- function(x,y) ...
    Derick SchoonbeeDerick Schoonbee
    Dec 25, 2003 at 11:07 pm
    Dec 27, 2003 at 9:09 am
  • Using Sweave in the tools library (R version 1.8.0: sorry i havent upgraded), it seems i cant use if statements in R chunks that make graphs. i have this: <<fig=TRUE,echo=F = par(mfrow=c(1,1)) ...
    Rafael A. IrizarryRafael A. Irizarry
    Dec 23, 2003 at 3:44 pm
    Dec 26, 2003 at 10:36 am
  • All Is there an R command to produce error bars around a plotted point. Crawley's book uses the command error.bar() but my version of R rejects it. Must be an S+ command(?). Thanks REX
    Dec 20, 2003 at 12:16 am
    Dec 20, 2003 at 7:41 pm
  • I have a simple linear model (fitted with lm()) with 2 independant variables : one categorical and one integer. When I run summary.lm() on this model, I get a standard linear regression summary (in ...
    Alexander Sirotkin [at Yahoo]Alexander Sirotkin [at Yahoo]
    Dec 6, 2003 at 4:10 pm
    Dec 17, 2003 at 1:32 am
  • How can I get the mode (most frequent value) from a dataset (continuos variables)? I can obtain it when the data is discrete (by making a table and looking at the higher frequency) but I don't know ...
    Christian MoraChristian Mora
    Dec 11, 2003 at 11:08 pm
    Dec 13, 2003 at 1:19 pm
  • Hi, This is more a statistics question rather than R question. But I thought people on this list may have some pointers. MY question is like the following: I would like to have a robust regression ...
    Dec 3, 2003 at 10:31 pm
    Dec 4, 2003 at 5:09 pm
  • To all I have some simple questions pertaining to weights used in regression. If the variability of the dependent variable (y) is a function of the magnitude of predictor variable (x), can the use of ...
    Dec 19, 2003 at 12:54 am
    Dec 21, 2003 at 8:58 pm
  • I am constantly running into the problem where I get error messages like "cannot do complex assignments in base namespace". It might have something to do with the fact that R has not started up ...
    Thon de BoerThon de Boer
    Dec 21, 2003 at 7:45 am
    Dec 21, 2003 at 7:40 pm
  • One can perform a for loop without indices over the columns of a dataframe like this: for( v in df ) ... some statements involving v ... Is there some way to do this for rows other than using ...
    Gabor GrothendieckGabor Grothendieck
    Dec 19, 2003 at 12:20 am
    Dec 20, 2003 at 4:02 pm
  • Hello again I have a file from SPSS in .sav format. when I run library(foreign) cvar<-as.data.frame(read.spss("c:\\NDRI\\cvar\\data\\cvar2rev3.sav")) I get a warning Warning message ...
    Peter FlomPeter Flom
    Dec 11, 2003 at 3:44 pm
    Dec 17, 2003 at 4:01 pm
  • Some plots fail due to a problem with the X11 fonts. I get a message that "X11 font at size 22 could not be loaded." The demo() graphics routine for instance dies during the third chart. The graphics ...
    John DoughertyJohn Dougherty
    Dec 9, 2003 at 7:12 am
    Dec 10, 2003 at 4:04 pm
  • Hello everybody, I'm seeing some strange behavior on R 1.8.1 on Intel/Linux compiled with gcc 3.2.2. The p-value calculated from the chisq.test function is incorrect for some input values: Pearson's ...
    Jeffrey ChangJeffrey Chang
    Dec 9, 2003 at 3:53 am
    Dec 10, 2003 at 12:50 pm
  • Dear all! After hours of trying around, I gave up: I have a 2-dimensional array, and I know how to split it into its rows and how to get the mean for every row using 'sapply'. But what I want is to ...
    Jan WantiaJan Wantia
    Dec 4, 2003 at 1:03 pm
    Dec 8, 2003 at 1:58 pm
  • I think that there is a bug in the as.POSIXct function on Windows. Here is what I get on Win2000, Pentium III machine in R 1.8.1. Time difference of 1.000278 hours Now, the 26th of October was the ...
    Dec 4, 2003 at 5:20 pm
    Dec 5, 2003 at 6:00 pm
  • I'm sorry if I am missing something, but I am looking for the lda function and can't find it (used to be in MASS). I know there is reorganization going on for R-1.9 and expected to find lda in stats, ...
    Sean DavisSean Davis
    Dec 31, 2003 at 2:39 am
    Dec 31, 2003 at 4:51 pm
  • Greetings all. Any help with the following would be appreciated. I want to create a data frame for each file in a directory. The following code does not work but it may show what I am trying to do ...
    Murray JorgensenMurray Jorgensen
    Dec 30, 2003 at 1:11 am
    Dec 30, 2003 at 4:03 pm
  • Hi, I wonder if it is possible to create an DLL or EXE file performing R procedures. Instead of running R, reading data and calling some procedures, I would like to use R functions in the following ...
    PaTa PaTaSPaTa PaTaS
    Dec 23, 2003 at 10:22 pm
    Dec 24, 2003 at 7:11 pm
  • I handed out some results from glm() and the students ask "how many observations were dropped due to missing values"? How would I know? In other stat programs, the results will typically include N ...
    Paul JohnsonPaul Johnson
    Dec 18, 2003 at 7:27 pm
    Dec 20, 2003 at 3:52 am
  • Dear All, I have spatial data (presence/absence for 4000 squares) on 250 bird species and would like to use a model-based clustering technique to test for species associations. Is there any way of ...
    Jarrod HadfieldJarrod Hadfield
    Dec 18, 2003 at 8:55 pm
    Dec 19, 2003 at 10:54 am
  • Dear List, My colleague has been having a problem with the following data and plotting commands. The example below is part of a larger set of plots, but I've isolated the problem to this example ...
    Gavin SimpsonGavin Simpson
    Dec 18, 2003 at 6:02 pm
    Dec 18, 2003 at 6:58 pm
  • Hi all, I didn't get a response to my post of this issue a week ago, so I've tried to clarify: When I use lme to analyze a model of nested random effects, the variance estimates of levels higher in ...
    Gary AllisonGary Allison
    Dec 17, 2003 at 1:35 am
    Dec 17, 2003 at 6:05 pm
  • I'm using R from a Linux command prompt, and am logging the whole session by tee'ing the R invocation line. ie. R | tee -a Rlog.txt Is there a better way to log all the session input and output from ...
    Stan SmileyStan Smiley
    Dec 12, 2003 at 7:55 pm
    Dec 13, 2003 at 12:20 pm
  • Hi all, I am new to R. I have been looking for a way to call R functions from Java or C. What I have found so far is: I can execute R commands in batch mode from a file and redirect the output to ...
    Aylin YilmazAylin Yilmaz
    Dec 10, 2003 at 10:47 pm
    Dec 11, 2003 at 9:15 pm
  • Sorry for the off-topic question, but I know there are some talented LaTeX users out there. Which bibliography style gives only the year in text citations (e.g "for further details, see Anderson ...
    Jason TurnerJason Turner
    Dec 10, 2003 at 12:19 am
    Dec 10, 2003 at 2:15 pm
  • Hi all, I need the power of R from within some of my Python programs... I use debian linux (woody) at home and windows XP at work (the latter is where I need to get things done!) This are my ...
    Héctor Villafuerte D.Héctor Villafuerte D.
    Dec 9, 2003 at 2:37 am
    Dec 10, 2003 at 8:51 am
  • I'm trying to use ESS & xemacs under debian linux testing and KDE. My problem is that I didn't find any document in the internet explaining a **step by step** session with R and xemacs. The (wrong) ...
    V DemartV Demart
    Dec 7, 2003 at 7:38 am
    Dec 7, 2003 at 2:27 pm
  • I am a beginner in R with a background in SAS. Are there built-in R methods of reading dates for calculating elapsed days between two calendar dates? If so, are there any examples I can browse? ...
    John byrneJohn byrne
    Dec 4, 2003 at 11:40 pm
    Dec 5, 2003 at 3:41 pm
  • Hi all, I?m working with a dataset with 9 columns and 2000 rows. Each row represents an individual and one of the columns represents the volume of that individual (measured in cubic meters). I?d like ...
    Dec 4, 2003 at 12:18 pm
    Dec 5, 2003 at 11:27 am
  • Hello, I am a beginner in R programming and recently heard about this mailing list. Currently, I am trapped into a simple problem for which I just can't find a solution. I have a huge dataset ...
    Dec 24, 2003 at 7:27 am
    Dec 26, 2003 at 6:01 am
  • Question: I have matrix (n x3) that represents discrete data. Each row of matrix is 3-D point (x,y,z). I would like to get contour map (z value) at two dimension (x,y). How can I use related contour ...
    L ZL Z
    Dec 19, 2003 at 10:58 pm
    Dec 22, 2003 at 8:54 am
  • Dear List-Members, my name is Klemens Barfus and I am quite new to this list and to working with R. I try to generate Vornoi-Polygons with the Tripack package. I would like to have a table with the ...
    Klemens BarfusKlemens Barfus
    Dec 18, 2003 at 1:16 pm
    Dec 18, 2003 at 2:23 pm
  • dear all, Given a matrix A, say, I would like to apply a bivariate function to each combination of its colums. That is if myfun<-function(x,y)cor(x,y) #computes simple correlation of two vectors x ...
    Vito MuggeoVito Muggeo
    Dec 16, 2003 at 1:13 pm
    Dec 18, 2003 at 11:31 am
  • Hi, I'm a bit confused how julian() works. If I understand right, it returns the number of days since the origin. I have a vector: [1] "1986-01-06" "1986-01-17" "1986-02-02" "1986-02-04" [5] ...
    Ko-Kang Kevin WangKo-Kang Kevin Wang
    Dec 15, 2003 at 8:55 pm
    Dec 16, 2003 at 2:23 am
  • Dear People, I just went back to an old piece of C code. On trying to compile it with the R math standalone C library I got the following error. Can anyone enlighten me what I am doing wrong, if ...
    Faheem MithaFaheem Mitha
    Dec 14, 2003 at 12:44 am
    Dec 14, 2003 at 7:37 am
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