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459 discussions - 1,317 posts

  • I would be gratefulf if anybody can help me with this problem. I have not a experience with R language, actually this is my first job with it : I have write some instructions for acomplish a ...
    Alicia LopezAlicia Lopez
    Jun 2, 2003 at 10:34 am
    Jun 19, 2003 at 10:04 pm
  • I have the following problem. It is not of earthshaking importance, but still I have spent a considerable amount of time thinking about it. PROBLEM: Is there any way I can have a single textfile that ...
    Ernst HansenErnst Hansen
    Jun 12, 2003 at 12:39 pm
    Jun 17, 2003 at 5:46 am
  • Greetings everyone, I am new at R. My questions is rather basic. Looking R manuals looks like there should be a way to read MS excel files into R. Could somebody tell me which library should I use ...
    Victor H. MarímVictor H. Marím
    Jun 24, 2003 at 3:45 pm
    Jun 25, 2003 at 9:16 pm
  • For numbers ending in 5 Excel always rounds up and I want to reproduce this in R rather than use the round function. I have tried: x<-as.integer(x*100+0.5)/100 and x<-floor(x*100+0.5)/100 However, ...
    Mike WhiteMike White
    Jun 2, 2003 at 9:46 am
    Jun 11, 2003 at 1:40 pm
  • Dear People, I need to make a label which both contains math notation as well as substitutes a value for an object. In the following label, len and theta are one dim variables, and I am substituting ...
    Faheem MithaFaheem Mitha
    Jun 20, 2003 at 6:47 am
    Jun 27, 2003 at 7:38 am
  • Dear R-helpers, I'd like to be able to post-process contours coming from contour(). Does anyone have a version of contour() (or something similar) which will return the contour coordinates? In ...
    John FieldJohn Field
    Jun 27, 2003 at 8:33 am
    Jul 1, 2003 at 8:32 am
  • I have found XLispStat's spinning plots illuminating. I'd like to do the same thing in R. A dozen or so probes with help, help.search, apropos haven't turned up anything, and I've even resorted to ...
    Richard A. O'KeefeRichard A. O'Keefe
    Jun 23, 2003 at 1:14 am
    Jun 24, 2003 at 1:42 am
  • Dear listers, I can't find the variance or se of the coefficients in a multilevel model using lme. I want to calculate a Chi square test statistics for the variability of the coefficients across ...
    Andrej KvederAndrej Kveder
    Jun 25, 2003 at 9:24 pm
    Jul 2, 2003 at 1:59 pm
  • Dear all, I've taken a subset of data from a data frame using crb<-subset(all.raw, creek %in% c("CR") & year %in% c(2000,2001) & substrate %in% ("b")) this works fine, except that all of the original ...
    Nick BondNick Bond
    Jun 27, 2003 at 3:08 am
    Jun 30, 2003 at 5:00 pm
  • In Splus the code test.lm <- lm(y ~ x, data = test.data) plot(test.lm) generates a graphics window that contains multiple graph sheets that one may choose from via the "page" tabs at the bottom of ...
    Paul, David APaul, David A
    Jun 18, 2003 at 9:09 pm
    Jun 24, 2003 at 2:16 pm
  • Hi, I want to calculate the R-squared between two variables. Can you advice me how to identify and remove the outliers before performing R-squared calculation? Thanks, Kan ...
    kan Liukan Liu
    Jun 17, 2003 at 4:35 pm
    Jun 18, 2003 at 1:38 pm
  • Dear R-helpers, I'm having trouble compiling R packages from source on Win2K. I installed R 1.7.1beta [1] on my win2k machine [2], downloaded the fields package as source [3] and tried but failed to ...
    Simon CawleySimon Cawley
    Jun 14, 2003 at 12:02 am
    Jun 17, 2003 at 9:24 pm
  • Hello, I tried to install the "car" package but I can't solve the dependencies. car needs grid, lattice and dr but when I try to install grid I get this error prompt ...
    Martin WegmannMartin Wegmann
    Jun 12, 2003 at 11:08 am
    Jun 12, 2003 at 2:49 pm
  • I need to order a long vector of integers with rather few unique values. This is very slow: [1] 189.18 0.09 190.48 0.00 0.00 But with no ties [1] 1.18 0.00 1.18 0.00 0.00 it is very fast! This gave ...
    Göran BroströmGöran Broström
    Jun 7, 2003 at 4:29 pm
    Jun 9, 2003 at 4:37 pm
  • Dear list, I would like to study the dynamics of functions using R (instead of mathematica e.g.), i.e. the behavior of points under iteration of a function. So I tried (in vain) writing a function ...
    Tobias VerbekeTobias Verbeke
    Jun 5, 2003 at 2:12 pm
    Jun 5, 2003 at 6:06 pm
  • I am probably missing something quite obvious, but any help would be appreciated. I am continually getting people misreading the lattice plots because they are expecting the strip (with the factor ...
    Mulholland, TomMulholland, Tom
    Jun 4, 2003 at 9:26 am
    Jun 5, 2003 at 2:07 pm
  • I am trying to build a R 1.7 package under Windows NT. I created the DESCRIPTION file, the RD file and added the code to the R folder. I also downloaded and installed the Rtools package and have Perl ...
    Benjamin STABLERBenjamin STABLER
    Jun 2, 2003 at 6:35 pm
    Jun 3, 2003 at 9:24 pm
  • After upgrading to 1.7.0 under debian linux, I can't get e1071 working properly. The first problem I had was that g++-3.0 was the standard compiler but wasn't installed, so I installed it. e1071 then ...
    Andrew PerrinAndrew Perrin
    Jun 24, 2003 at 7:43 pm
    Jun 25, 2003 at 6:55 am
  • Hi, Running R 1.7.0 on Win XP I'm getting the following error message: Error in .C("open_netcdf", filename, id = as.integer(verbose)) : C/Fortran function name not in load table Don't know what is ...
    Antonio rodriguezAntonio rodriguez
    Jun 16, 2003 at 11:38 am
    Jun 16, 2003 at 5:18 pm
  • Hi, I was trying to install XML package in a linux (dabian) machine and got the following error message. I am not sure whether there is any error in my linux installion. I appreciate suggestions to ...
    Mahbub LatifMahbub Latif
    Jun 9, 2003 at 10:35 am
    Jun 10, 2003 at 3:17 am
  • Hello in logistic regression, I want to know that it is possible to get probability values of each predictors by using following formula for each predictor one by one (keeping constant the others) ...
    OrkunOrkun
    Jun 3, 2003 at 8:54 am
    Jun 5, 2003 at 3:01 pm
  • again, under another subject: sorry, maybe an all too trivial question. But we have power data from J frequency spectra and to have the same range for the data of all our subjects, we just ...
    Christoph LehmannChristoph Lehmann
    Jun 1, 2003 at 7:24 am
    Jun 2, 2003 at 7:19 pm
  • Hello, I'm trying to use AIC to choose between 2 models with positive, continuous response variables and different error distributions (specifically a Gamma GLM with log link and a normal linear ...
    Edward DickEdward Dick
    Jun 25, 2003 at 6:23 pm
    Jun 27, 2003 at 8:53 pm
  • Hi, I have the following problem (library Hmisc loaded, iris data loaded, R Version 1.7.0 (2003-04-16), packages updated, running on a linux Debian i386): Descriptive Statistics by Species ...
    Philippe GlaziouPhilippe Glaziou
    Jun 13, 2003 at 1:13 pm
    Jun 17, 2003 at 1:06 am
  • Dear R-Users, I'm a master student in Mathematics and Statistics at Carleton University, Ottawa, Canada. I'm studying Clustering methods including different related algorithms. One of them is Support ...
    Iouri TipenkoIouri Tipenko
    Jun 12, 2003 at 7:30 am
    Jun 12, 2003 at 10:19 am
  • Hello, I am looking for a library or script for R to run a backward elimination automatically on a linear regression. Does anybody know where to find such a thing or has a code snipplet lying around? ...
    Thomas FischerThomas Fischer
    Jun 11, 2003 at 5:16 am
    Jun 11, 2003 at 11:01 pm
  • Hi, I have a function foo(x,y) and a dataframe, DF, comprised of two vectors, x & w, as follows : x w 1 1 1 2 2 1 3 3 1 4 4 1 etc I would like to apply the function foo to each 'pair' within DF e.g ...
    Peter leonardPeter leonard
    Jun 8, 2003 at 8:35 pm
    Jun 10, 2003 at 12:05 am
  • Dear R-Help: I want to (a) subset a data.frame by several columns, (b) fit a model to each subset, and (c) store a vector of results from the fit in the columns of a data.frame. In the past, I've ...
    Spencer GravesSpencer Graves
    Jun 5, 2003 at 9:54 pm
    Jun 9, 2003 at 5:28 pm
  • Hello R lovers I have written a little cute function to count the number of missing value per row in a matrix and return the percentage of missing value it takes a lot of time to run with a 1000 rows ...
    Vincent StoliaroffVincent Stoliaroff
    Jun 5, 2003 at 2:24 pm
    Jun 6, 2003 at 1:54 am
  • Dear R-users, Suppose I have a function which takes three arguments. I would like to repeatedly apply the function, using a matrix N*3 in which each row supplies the three argements for the ...
    Maarten SpeekenbrinkMaarten Speekenbrink
    Jun 30, 2003 at 12:12 pm
    Jun 30, 2003 at 9:26 pm
  • I'm attempting to compile and install R version 1.7.1 for my statistical geneticists. It seems to compile correctly -- that is, it compiles without errors -- but the regression test is failing in the ...
    Jeff LewisJeff Lewis
    Jun 24, 2003 at 4:26 pm
    Jun 25, 2003 at 3:15 pm
  • R1.7.0, Win2k: When I use plot( ) on a groupedData object, if I have 165 subjects I'm supposed to be able to use plot(..., layout = c(5,3,11)) to get all 165 on 11 separate sheets. The graphics ...
    Paul, David APaul, David A
    Jun 23, 2003 at 9:04 pm
    Jun 25, 2003 at 8:01 am
  • Forgive me please if this has been answered previously, but the r-help archive doesn't have a "search" capability. It's a pity, as I'm sure that there's a wealth of informative help in there. I am ...
    Tony RossTony Ross
    Jun 23, 2003 at 6:09 am
    Jun 23, 2003 at 7:27 am
  • Hi Folks, Sorry to raise what has probably been discussed before, but I an repeatedly struck by the comparative slowness of S-plus for Windows compared with R for Linux when doing much the same ...
    Ted HardingTed Harding
    Jun 20, 2003 at 1:22 pm
    Jun 20, 2003 at 3:50 pm
  • I've been using par() to check the graphics parameters associated with both plot(<fitted linear model ) and plot(<grouped data object ). AFAIK the only differences are in the $cxy, $usr, $xaxp, and ...
    Paul, David APaul, David A
    Jun 19, 2003 at 4:14 pm
    Jun 19, 2003 at 8:38 pm
  • Hi, where can I find the most up-to-date Debian packages for R and sources in USA. I will be thankful for the location that I can include in my sources.list. Are their any special recommendations or ...
    TyagiAnupamTyagiAnupam
    Jun 18, 2003 at 3:35 pm
    Jun 18, 2003 at 5:30 pm
  • Hi! I would like to call a Fortran subroutine within R. For doing this, I first built a shared library for loading into R under Unix and it was successful. But when I tried to load a shared library ...
    Mu YunmingMu Yunming
    Jun 18, 2003 at 3:23 pm
    Jun 18, 2003 at 5:04 pm
  • Hi I have seen a few posts to this list regarding problems accessing the x11() device over cgi - namely, when trying to create a graphic using the jpeg() function, everything is fine from the command ...
    michael watson (IAH-C)michael watson (IAH-C)
    Jun 13, 2003 at 2:22 pm
    Jun 16, 2003 at 3:45 pm
  • Dear R People: I have a question about a "sorting" problem, please. I have a vector xx: [1] -2.0 1.4 -1.2 -2.2 0.4 1.5 -2.2 0.2 -0.4 -0.9 and a vector of breaks: [1] -2.2000000 -0.9666667 0.2666667 ...
    Erin HodgessErin Hodgess
    Jun 12, 2003 at 6:33 pm
    Jun 13, 2003 at 5:35 pm
  • Hi Is there a way to specify the location on the screen where a new graphics device opens, for example with a call to win.graph()? I'm using R 1.7.0 on Windows XP. Thank you. Regards, David
    David Khabie-ZeitouneDavid Khabie-Zeitoune
    Jun 13, 2003 at 10:05 am
    Jun 13, 2003 at 1:08 pm
  • Greetings, I would like to fit a multiple linear regression model in which the residuals are expected to follow a multivariate normal distribution, using weighted least squares. I know that the data ...
    Andy JacobsonAndy Jacobson
    Jun 13, 2003 at 3:40 am
    Jun 13, 2003 at 12:02 pm
  • Sorry for the probable repeat post but I can only search the list up to 2002 (is there a better way?). I am using the RH9 RPM from CRAN but packages like AnalyzeFMRI say that tcltk is not found. Do I ...
    Morgan HoughMorgan Hough
    Jun 11, 2003 at 1:30 am
    Jun 13, 2003 at 7:04 am
  • Dear all, I'm a fairly new R user having two questions regarding gam: 1. The prediction example on p. 38 in the mgcv manual. In order to get predictions based on the original data set, by leaving out ...
    Henric NilssonHenric Nilsson
    Jun 3, 2003 at 8:22 am
    Jun 3, 2003 at 11:44 am
  • Dear All, I am analysing some data for a colleague (not my data, gotta be published so I cannot divulge). My response variable is the number of matings observed per day for some fruitlies. My factors ...
    Federico CalboliFederico Calboli
    Jun 26, 2003 at 2:57 pm
    Jul 2, 2003 at 10:08 pm
  • Hello, I would like to know if (as the usa map with Splus), it is possible with R to plot the french map and to add points (representing towns for instance) on the figure in the appropriate (x,y) ...
    Peyrard NathaliePeyrard Nathalie
    Jun 30, 2003 at 2:21 pm
    Jun 30, 2003 at 5:00 pm
  • Hi, there I am a grad student struggling to get my syntax right in a model I am building in R. I am trying to specify a variable,W, in a loop, such that on the first iteration, it is equal to Wo, my ...
    Michael RennieMichael Rennie
    Jun 30, 2003 at 3:21 pm
    Jun 30, 2003 at 4:14 pm
  • Hello I'm reading up on fitting truncated Weibull distribution to data. There are posts in 2002 that point to this presentation by Prof Bates: http://www.stat.wisc.edu/~bates/JSM2001.pdf but now the ...
    Viet Nguyen,,,Viet Nguyen,,,
    Jun 9, 2003 at 5:21 am
    Jun 28, 2003 at 6:09 am
  • hello, I only want to get the slope of a linear regression of ca. 100 variables against time. I can do for each response (100 times) var1.lm <- lm(response~predictor) but I thought that there might ...
    Martin WegmannMartin Wegmann
    Jun 27, 2003 at 8:21 pm
    Jun 27, 2003 at 8:21 pm
  • Hello, I do not understand the following behaviour. Could someone explain me what happens? Error: more elements supplied than there are to replace Why do I get an error message using list[["item"]], ...
    Philippe GrosjeanPhilippe Grosjean
    Jun 26, 2003 at 3:24 pm
    Jun 27, 2003 at 6:39 am
  • Is there a command in R that make the same regression like l1fit in S-plus? -- bertola at fastmail.fm --
    Rafael BertolaRafael Bertola
    Jun 25, 2003 at 6:48 pm
    Jun 26, 2003 at 1:17 pm
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