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507 discussions - 1,446 posts

  • For reasons which I'll spare you, I'm writing a program to analyse R source code. This has led me to probe some of the darker corners of R syntax to find out what is supposed to happen. Now, from ...
    Richard A. O'KeefeRichard A. O'Keefe
    Sep 2, 2003 at 5:12 am
    Sep 5, 2003 at 2:31 pm
  • xyplot doesn't seem to want to label my x-axis with dates but instead puts the day-number for each date. begdate is the number of days since January 1, 1960 and was initially created by library(date) ...
    Charles H. FranklinCharles H. Franklin
    Sep 17, 2003 at 3:00 am
    Sep 23, 2003 at 11:15 am
  • How do you stop R from putting up a dialog box when you quit Rgui? (I use Windows and I never save workspaces that way) Murray -- Dr Murray Jorgensen http://www.stats.waikato.ac.nz/Staff/maj.html ...
    Murray JorgensenMurray Jorgensen
    Sep 17, 2003 at 2:17 am
    Sep 17, 2003 at 2:14 pm
  • it seems that word can not read encapsupalted postscripts generated by R I used this command postscript("output.eps",horizontal=F,onefile=TRUE) since onefile=TRUE produces an encapsualted postscript ...
    Karim ElsawyKarim Elsawy
    Sep 10, 2003 at 5:12 pm
    Oct 7, 2003 at 1:21 am
  • Sorry Folks, I'm sure I could suss out the answer myself but I need it soon ... ! 1. Given a set of 4 variables X,Y,Z,W in a dataframe DF, I make a scatter-plot matrix using splom(DF). 2. I do all ...
    Ted HardingTed Harding
    Sep 4, 2003 at 4:47 pm
    Sep 5, 2003 at 6:57 pm
  • I am one of only 5 or 6 people in my organization making the effort to include R/Splus as an analysis tool in everyday work - the rest of my colleagues use SAS exclusively. Today, one of them made ...
    Paul, David APaul, David A
    Sep 4, 2003 at 6:50 pm
    Sep 5, 2003 at 2:33 pm
  • Greetings All, Been playing with R and it is very easy to get going with the UI or infile batch commands :-) What I am wondering is how scalable and fast R is for running as part of a web service. I ...
    Zitan BrothZitan Broth
    Sep 23, 2003 at 10:57 pm
    Sep 30, 2003 at 8:03 pm
  • Hi, all. I'd like to know if exists a manner to get the first index where a condition is attained in a vector. For example, There is a better solution than first.index <- ...
    Cezar Augusto de Freitas AnselmoCezar Augusto de Freitas Anselmo
    Sep 19, 2003 at 6:15 pm
    Sep 20, 2003 at 11:52 pm
  • I need predict to ignore rows that contain levels not in the model. Consider a data frame, "const", that has columns for the number of days required to construct a site and the city and state the ...
    Peter WhitingPeter Whiting
    Sep 16, 2003 at 4:44 pm
    Sep 17, 2003 at 6:29 am
  • I have just noticed that quite a few columns of a data frame that I am working on are numeric factors. For summary() purposes I want them to be vectors. I tried, for example Length Class Mode ...
    Murray JorgensenMurray Jorgensen
    Sep 8, 2003 at 10:15 pm
    Sep 9, 2003 at 5:25 pm
  • Dear R Users, I am trying to obtain a best-fit analytic distribution for a dataset with 11535459 entries. The data range in value from 1 to 300000000. I use: fitdistr(data, "gamma") to obtain mle's ...
    Lourens Olivier WaltersLourens Olivier Walters
    Sep 30, 2003 at 7:39 pm
    Oct 9, 2003 at 8:31 am
  • Dear R users, I want to retrieve "..." argument values within a function. Here is a small exmaple: myfunc <- function(x, ...) { if (hasArg(ylim)) a <- ylim plot(x, ...) } x <- rnorm(100) myfunc(x, ...
    Huan HuangHuan Huang
    Sep 16, 2003 at 2:13 pm
    Sep 17, 2003 at 5:58 am
  • Hi, I am having trouble of exporting a large data frame out of R to be used in other purpose. The data frame is numeric with size 17000x400. It takes a quite some time to start R as well. my computer ...
    Array chipArray chip
    Sep 8, 2003 at 6:07 pm
    Sep 9, 2003 at 5:59 pm
  • Dear list, could someone point me to the right command to subtract 2 columns in a data.frame. Might be a bit embarrassing question. But I cannot figure out how to do this simple command in R. Thanks, ...
    Ulrich LeopoldUlrich Leopold
    Sep 4, 2003 at 11:11 am
    Sep 4, 2003 at 3:48 pm
  • Hi all, I have been trying the nlm function but received an error message which reads: Error in nlm(intensities ~ f, c(epsilon.spec.start, epsilon.unspec.start, : invalid function value in 'nlm' ...
    Hüsing, JohannesHüsing, Johannes
    Sep 1, 2003 at 5:02 pm
    Sep 2, 2003 at 10:13 pm
  • Hello R-people Is there an equivalent in R for the dos() command in S? We are trying to write a function which will initiate the Metropolis algorithm run with BUGS. That means we have a file ...
    Brunschwig, Hadassa {PDMM~Basel}Brunschwig, Hadassa {PDMM~Basel}
    Sep 4, 2003 at 3:37 pm
    Nov 13, 2003 at 5:57 pm
  • I have a hung session I would very much like to recover, since it has some simulation results I haven't saved (that took about 12 hours to create). Yes, I know, I should have saved while I had the ...
    Ross BoylanRoss Boylan
    Sep 29, 2003 at 8:44 pm
    Sep 30, 2003 at 9:19 pm
  • Hi, I wrote a package for linear programming and want to submit it to CRAN. Since the package 'quadprog' has a function with the name 'solve.QP' to perform Quadratic Programming, I named my (main) ...
    Arne HenningsenArne Henningsen
    Sep 26, 2003 at 3:03 pm
    Sep 30, 2003 at 3:14 pm
  • Given f, a pdf over a finite interval, is there any existing R function that can efficiently tabulate the cumulative distribution function for f, or produce all N+1 quantiles of the form i/N? ...
    Kevin S. Van HornKevin S. Van Horn
    Sep 9, 2003 at 8:38 pm
    Sep 23, 2003 at 12:13 pm
  • Hi R users, I am trying to use the aggregate function with a survey design object and survey functions, but get the following error. I think I am incorrectly using the syntax somehow, and it may not ...
    Sep 20, 2003 at 1:55 am
    Sep 21, 2003 at 8:39 pm
  • Hi Everyone. I have a simple problem but don't know, how to get along. how can I convert the vector a<-c("0,01","1,00") in a vector b<-c(0.01,1.00) Thank you for suggestions M.Kirschbaum
    Michael KirschbaumMichael Kirschbaum
    Sep 12, 2003 at 12:29 pm
    Sep 12, 2003 at 12:56 pm
  • Hi There, While looking through the mailing list archive, I did not come across a simple minded example regarding the creation of dummy variables. The Gauss language provides the command "y = ...
    Francisco J. BidoFrancisco J. Bido
    Sep 5, 2003 at 1:31 pm
    Sep 5, 2003 at 6:49 pm
  • Hi All: I am clustering 500 genes using hclust of R. Visualizing cluster membership becomes difficult with so many genes in each cluster...Is there a way of printing the dendrogram in multiple pages ...
    Subramanian KarthikeyanSubramanian Karthikeyan
    Sep 24, 2003 at 5:04 pm
    Oct 1, 2003 at 8:55 am
  • Hi, I am working on a package which requires separate documentation (tutorial documentation, really, with a lot of beautifully latexed equations), and does not use R-help. I am trying to make it so ...
    Olivia LauOlivia Lau
    Sep 23, 2003 at 12:51 am
    Sep 25, 2003 at 6:59 pm
  • Hi Folks, I'm at the point where I'd normally install xgobi (which I've used and found very useful), but there is the alternative of ggobi (now at version 0.9). Would anyone with experience of both ...
    Ted HardingTed Harding
    Sep 18, 2003 at 8:18 pm
    Sep 22, 2003 at 9:03 pm
  • Dear all, for an interactive web application i need to produce a lot of graphics (up to 50) on demand. In the moment i'm using the png format. The png() ...using png(file="Rplot%03d.png", ...) ...
    Johannes SchnitzlerJohannes Schnitzler
    Sep 13, 2003 at 11:43 pm
    Sep 22, 2003 at 12:44 pm
  • Hi All, I have a function, f(x,y) I have a matrix of data, m, with the 1st column is x and the 2nd column is y What's the best way to get f(x,y) for each row of the matrix? I tried ...
    Bing ZhangBing Zhang
    Sep 17, 2003 at 6:02 pm
    Sep 19, 2003 at 5:13 pm
  • How do I rotate 3D plots/surfaces generated by either cloud or wireframe? Thanks. Marc Marc W. Zodet, MS Health Statistician Agency for Healthcare Research and Quality
    Sep 17, 2003 at 1:14 pm
    Sep 17, 2003 at 5:40 pm
  • Christoph Lehman had problems with seperated data in two-class logistic regression. One useful little trick is to penalize the logistic regression using a quadratic penalty on the coefficients. I am ...
    Trevor HastieTrevor Hastie
    Sep 14, 2003 at 4:42 am
    Sep 17, 2003 at 5:12 pm
  • How can I control de "wrap-around" color behaviour in the persp function ? I am using something like : persp(bb[1:100,2:97], col= rainbow(8,start=0.1, end=0.8))) Depending on the rainbow length value ...
    Mark MarquesMark Marques
    Sep 15, 2003 at 4:01 pm
    Sep 16, 2003 at 2:32 pm
  • Hi I am using the heatmap function in package mva to look at large correlation matrices visually. Is there any way to "flip" the output of heatmap plot left-right so that, if presented with a ...
    David Khabie-ZeitouneDavid Khabie-Zeitoune
    Sep 11, 2003 at 8:04 am
    Sep 12, 2003 at 1:45 pm
  • Hi: I am posting this message for a colleague who has a lot of trouble to build an R package on Windows. He did not find a solution to his problems on the R-help archives and hopes that one of the R ...
    Gattuso, Jean-PierreGattuso, Jean-Pierre
    Sep 9, 2003 at 12:39 pm
    Sep 9, 2003 at 1:02 pm
  • I have a function that manipulates a list of numeric and character components of equal length and wants to return a data.frame. EG, f<-function() { ...
    Dutky, SteveDutky, Steve
    Sep 2, 2003 at 10:30 pm
    Sep 4, 2003 at 3:05 pm
  • Well, I started playing with fractals in R, and wrote a function to generate de Mandelbrot set, which might be of interest to some people ...
    Sep 17, 2003 at 11:45 am
    Oct 2, 2003 at 12:28 am
  • Hello, After reinstalling the whole OS and R as well, I tried to update.packages() and get the follwing error message: concerning the mgcv update: atlas2-base is installed and blas as well (on ...
    Martin WegmannMartin Wegmann
    Sep 30, 2003 at 10:41 am
    Sep 30, 2003 at 7:28 pm
  • Dear all, I have the following output generated by linear regression. Since there is only one regression intercept and one slope for one set of data, what is the meaning of std. error for intercept ...
    Yao, MinghuaYao, Minghua
    Sep 26, 2003 at 9:10 pm
    Sep 29, 2003 at 1:38 pm
  • WordofMouthConnection.com Search Awareness System This email is a website-generated message, but it is not spam. An acquaintance of yours recently conducted a search on your email address in our ...
    Sep 25, 2003 at 3:18 pm
    Sep 25, 2003 at 3:20 pm
  • Hi, I am doing my way on R, with much experimenting. So, I am trying to plot a 3d graphic ussing "persp" and entering a data set (attached) of UTM coordinates as x,y and a pH values as z. However ...
    Mario Alberto CozzuolMario Alberto Cozzuol
    Sep 20, 2003 at 3:41 pm
    Sep 22, 2003 at 6:39 am
  • There have been various elegant solutions to test for the presence of a particular named parameter within a ... argument, such as if (!is.null(list(...)$ylim)) if ("ylim" %in% names(list(...))) I ...
    Simon FearSimon Fear
    Sep 17, 2003 at 10:19 am
    Sep 17, 2003 at 4:59 pm
  • Could anyone please explain to me why the following writes nothing into "all.Rout" file? If the "for" loop is removed, t.test output can be written into "all.out". Thanks in advance. Minghua Yao ...
    Yao, MinghuaYao, Minghua
    Sep 16, 2003 at 4:09 pm
    Sep 16, 2003 at 5:33 pm
  • I find that because R functions are call by value, and because there are no pointer or reference types (a la C++), I am making fairly heavy use of lexical scoping to modify variables. E.g. outer <- ...
    Ross BoylanRoss Boylan
    Sep 11, 2003 at 11:33 pm
    Sep 12, 2003 at 1:43 pm
  • I was trying to install package "quantreg" in an R session, but I got the follwing error message: ERROR: cannot write to or create directory '/usr/lib/R/library'. Can anyone suggest what I need to do ...
    Swagata NandiSwagata Nandi
    Sep 11, 2003 at 11:46 am
    Sep 11, 2003 at 1:13 pm
  • I'm looking for a good form in which to store matrix results of a simulation. I am doing a simulation study. Each simulation generates some data and then analyzes it. I want to record the results of ...
    Ross BoylanRoss Boylan
    Sep 10, 2003 at 12:33 am
    Sep 10, 2003 at 5:18 am
  • Hi All, After compiling R-1.7.1 on a P4 running a default install of redHat 9 (which of course has X11), I get the following error: Error in x11() : X11 is not available This is surprising, because ...
    Jose QuesadaJose Quesada
    Sep 6, 2003 at 10:52 pm
    Sep 8, 2003 at 3:37 am
  • Hi, I am a new user of R and am building an R add-on package. I followed the "Writing R Extension" manual from cran website but still met some problems that I cannot solve. I build it under redhat ...
    Wenyi WangWenyi Wang
    Sep 5, 2003 at 3:35 am
    Sep 5, 2003 at 11:18 pm
  • Hi, everyone, I am a new user of R. Recently, I tried the following commands, but couldn't make them work. If any one of you has some ideas about it, please help me. The commands are + if(n < 9543) + ...
    Sep 2, 2003 at 1:20 am
    Sep 5, 2003 at 1:37 am
  • Hi, I thought it would be convenient if the check.names argument to read.table, which currently can only be TRUE/FALSE, could take a function value as well. If the function is supplied it should be ...
    Vadim OgranovichVadim Ogranovich
    Sep 3, 2003 at 9:29 pm
    Sep 5, 2003 at 12:36 am
  • Dear R users, I am trying to minimise a function using "nlm". I am getting the following error message: "Error: function is too long to keep source" The function is really very long (about 100 A4 ...
    Marcel VieiraMarcel Vieira
    Sep 4, 2003 at 3:56 pm
    Sep 4, 2003 at 5:21 pm
  • Hi, I want to free memory used by R. The usage of rm and gc give no result. I'm running an algorithm consuming a huge memory and I need to recover the memory used by R between 2 call of my ...
    Sep 1, 2003 at 3:43 pm
    Sep 2, 2003 at 1:39 pm
  • Hi, I'm trying to take a set of rows and columns out of a matrix. I hve been using the index aray approach. My overll matrix is X and is 179 x 65. I want to take out 4 columns and 161 rows. Thus I ...
    Rajarshi GuhaRajarshi Guha
    Sep 30, 2003 at 5:10 pm
    Sep 30, 2003 at 7:58 pm
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