Grokbase Groups R r-help May 2005

Search Discussions

635 discussions - 1,903 posts

  • Dear R Folks, I'm a big fan of R, but there are a couple of things that repeatedly annoy me, and I wondered if anyone has neat ways to deal with them. (a) When using "apply" row-wise to a matrix, it ...
    Chalasani, PrasadChalasani, Prasad
    May 19, 2005 at 2:36 pm
    May 23, 2005 at 10:47 pm
  • Hi, It is my understanding that the eigenvectors of a circulant matrix are given as follows: 1,omega,omega^2,....,omega^{p-1} where the matrix has dimension given by p x p and omega is one of p ...
    Globe TrotterGlobe Trotter
    May 2, 2005 at 3:10 am
    May 4, 2005 at 4:07 am
  • Sorry for disturbing you with another newbie question! I have a data frame about coastal waters quality parameters: for some parameters (e.g. NH3) I have only 1 observation for each sampling station ...
    Alessandro carlettiAlessandro carletti
    May 4, 2005 at 3:43 pm
    May 20, 2005 at 2:12 am
  • Dear R users, The Sweave code below runs fine, as it is. However, an error occurs when the line 'library(xtable)' is uncommented: Error: chunk 1 Error in "label<-"(`*tmp*`, value = "month") : no ...
    Sander OomSander Oom
    May 13, 2005 at 12:21 pm
    May 16, 2005 at 4:07 pm
  • Hello all, I noticed that both Windows and OS X version of R have a GUI (Rconsole). Is there a GUI for Linux? I'm running Debian on which the CLI for R works just fine. Regards, - Robert
    Robert CitekRobert Citek
    May 29, 2005 at 5:13 pm
    May 31, 2005 at 12:57 pm
  • R2.0.1 (MS Windows) [1] "P:/SARsoftware/Rlibraries/" [2] "P:/SARsoftware/Rlibraries/" R2.1.0: Error in list.files(path, pattern, all.files, full.names, recursive) : invalid ...
    Steve RobertsSteve Roberts
    May 12, 2005 at 8:30 am
    May 12, 2005 at 6:32 pm
  • Is there a way to have an R program send an email? Something like this: address <- 'abc at' text <- 'This is the email body', text) Thanks. FS
    Fernando SaldanhaFernando Saldanha
    May 10, 2005 at 3:07 am
    May 11, 2005 at 10:32 am
  • Hi I'm a postgraduate student and I am currently busy with EVT. I am a new user to R and have been making use of the fExtremes package. Could you please tell me how to assign "blocks" by "months"? ...
    May 3, 2005 at 4:52 pm
    May 31, 2005 at 7:47 pm
  • I hope somebody can help. A student of mine is doing a study on Measurement Error models (errors-in-variables, total least squares, etc.). I have an old reference to a "multi archive" that contains ...
    Jacob van WykJacob van Wyk
    May 25, 2005 at 6:27 am
    Jun 2, 2005 at 2:55 pm
  • I have tried to get signif, round and format to display numbers like these consistently in a table, using e.g. signif(x,digits=3) 17.01 18.15 I want 17.0 18.2 Not 17 18.2 Why is the last digit ...
    Henrik AnderssonHenrik Andersson
    May 30, 2005 at 2:43 pm
    May 31, 2005 at 11:22 pm
  • Dear R users, has anybody made an attempt to create the soil texture triangle graph in R? For an example see here: I would like to get the lines in ...
    Sander OomSander Oom
    May 27, 2005 at 8:08 am
    May 31, 2005 at 7:35 pm
  • I have prices that I am finding difficult to compare with ==, and , due to precision. For example: the numbers should match, with '==', but they differ in the magnitude of 1e-14 due to bunch of ...
    Omar LakkisOmar Lakkis
    May 25, 2005 at 2:08 pm
    May 26, 2005 at 1:09 am
  • Hello, Let's say I have 50 R scripts to run. What would be the most efficient way to run them? I thought I could do multiple Rterms in a DOS batch file: Ex: Rterm <1.R 1.txt Rterm <2.R 2.txt .. ...
    Lapointe, PierreLapointe, Pierre
    May 22, 2005 at 12:51 am
    May 25, 2005 at 8:30 am
  • I'd like to have a class A that computes a likelihood, and a subclass B that computes the same likelihood by sometimes throws in an additional term (B includes measurement error). So B's likelihood ...
    Ross BoylanRoss Boylan
    May 23, 2005 at 9:41 pm
    May 25, 2005 at 12:19 am
  • how do I check the rank of a matrix ? say A= 1 0 0 0 1 0 then rank(A)=2 what is this function? thanks I did try"rank"), but all the returned help information seem irrelevant to what I ...
    May 4, 2005 at 3:54 pm
    May 4, 2005 at 11:18 pm
  • Dear Fellows, How can I do to proced a step wise regression in R, if it´s possible ? Thanks, Walmir Acabe com aquelas janelinhas que pulam na sua tela. AntiPop-up UOL - É grátis! ...
    May 3, 2005 at 12:53 pm
    May 4, 2005 at 6:04 pm
  • Hello! I am crossposting this to R-help and BioC, since it is relevant to both groups. I wrote a wrapper for Entrez search utility (link for this is provided bellow), which can add some new search ...
    Gorjanc GregorGorjanc Gregor
    May 2, 2005 at 11:46 pm
    May 3, 2005 at 3:24 pm
  • Dear r-help, I draw graphics with xyplot and want to add some text to each panel (actually, the slope, error and significance of a regression line). I have defined the function, drawing a single ...
    Wladimir EremeevWladimir Eremeev
    May 19, 2005 at 10:16 am
    Jul 25, 2005 at 6:37 pm
  • SAS Enterprise Miner recommendeds to standardize using X / STDEV(X) versus [X ? mean(X)] / STDEV(X) Any thoughts on this? Pros Cons Philip
    Philip BerminghamPhilip Bermingham
    May 18, 2005 at 12:33 pm
    May 19, 2005 at 10:40 am
  • Please could someone point me in the right direction as I appear to be having a total mental block with fairly basic PCA problem! I have a large dataframe where rows represent independent ...
    Laura QuinnLaura Quinn
    May 16, 2005 at 7:32 am
    May 16, 2005 at 5:28 pm
  • Dear all, I am trying to plot means and error bars using xYplot, but I get an error message from xYplot which I can not figure out: range not meaningful for factors The data frame (tmpNa) was created ...
    Sander OomSander Oom
    May 12, 2005 at 9:10 am
    May 13, 2005 at 5:41 pm
  • Hi, I have a whole bunch of data, which looks like: 15/03/2003 10:20 1 15/03/2003 10:21 0 15/03/2003 12:02 0 16/03/2003 06:10 0 16/03/2003 06:20 0.5 16/03/2003 06:30 0 16/03/2003 06:40 0 16/03/2003 ...
    Carla MeurkCarla Meurk
    May 11, 2005 at 3:28 am
    May 12, 2005 at 9:11 pm
  • For the following code below, the x-axis ticks are 1,2,3,4,5,6,7 when I was expection them to be 1,2,8,9,10,11,12. Please help me figure out where is the mistake. library(lattice) testdata <- ...
    Ghosh, SandeepGhosh, Sandeep
    May 5, 2005 at 6:10 pm
    May 9, 2005 at 9:53 pm
  • Dear r-help, Now I am drawing graphs with xyplot function. In order to place a legend under the plots I use the key argument in the xyplot function. One of the 'key' components is 'divide', which ...
    Wladimir EremeevWladimir Eremeev
    May 20, 2005 at 12:05 pm
    Aug 4, 2005 at 4:37 pm
  • Hello list. I'm using R from the gnome-terminal in Fedora. My preference is to write programs in VIM, and then source the file from R, or copy and paste the lines into the console. I'm wondering if ...
    Manuel MoralesManuel Morales
    May 31, 2005 at 8:47 pm
    Jun 1, 2005 at 11:39 am
  • Dear R-Users! Is there a possibility in R to do analyze longitudinal survey data (repeated measures in a survey)? I know that for longitudinal data I can use lme() to incorporate the correlation ...
    H BrunschwigH Brunschwig
    May 26, 2005 at 6:20 pm
    May 27, 2005 at 11:35 pm
  • After trying to find if there was a color picker in the FAQs and the help, I thought I would send a post here. I was overwhelmed with all the wonderful color choices R has predefined (discovered ...
    Jeff D. HamannJeff D. Hamann
    May 23, 2005 at 3:35 pm
    May 26, 2005 at 12:43 pm
  • oops, I forgot to attach the example txt file with the syntax error, so I will do it here, can anyone see what the error is with bryansAtLineLevel? An embedded and charset-unspecified text was ...
    May 20, 2005 at 9:38 am
    May 20, 2005 at 2:21 pm
  • hi list, i have to ask you again, having tried and searched for several days... i want to do a TukeyHSD after an Anova, and want to get the adjusted p-values after the Tukey Correction. i found the ...
    Christoph StrehblowChristoph Strehblow
    May 15, 2005 at 4:40 pm
    May 17, 2005 at 4:50 pm
  • Hi everyone, I have a question on parsing speed. I have two functions: F1 F2 As things are now, F2 calls F1 internally: F2 = function(x){ if (something == 1){ y = F1(x) } if (something ==2){ do ...
    Federico CalboliFederico Calboli
    May 16, 2005 at 10:46 am
    May 17, 2005 at 1:43 pm
  • Oops, I just erased all my data using this gizmo that I thought would replace -9 with NA. A) Can I get my tcn5 back? B) How do I do it right next time, I learned my lesson, I'll never do it again, I ...
    Anders Schwartz CorrAnders Schwartz Corr
    May 17, 2005 at 5:37 am
    May 17, 2005 at 7:46 am
  • Currently in R, constructing a string containing values of variables is done using 'paste' and can be an error-prone and traumatic experience. For example, when constructing a db query we have to ...
    Charles lobozCharles loboz
    May 7, 2005 at 8:36 am
    May 11, 2005 at 10:41 pm
  • Hi, I'm trying to find an implementation of monotonic regression in R and I haven't been able to find anything that's really related to this. isoMDS in the MASS package uses monotonic regression, ...
    Scott BriggsScott Briggs
    May 8, 2005 at 7:08 pm
    May 10, 2005 at 5:28 am
  • Hi, I make a upgrade to R 2.1.0 and in some analysis I give an error: anova(model,test="F") Analysis of Deviance Table Model: binomial, link: logit Response: landing/total Terms added sequentially ...
    Ronaldo Reis-Jr.Ronaldo Reis-Jr.
    May 9, 2005 at 1:34 pm
    May 9, 2005 at 4:20 pm
  • Dear R users, I did install R. 2.0.1, and try to load "gap" package. However, below is the message shown when I did load it. Can anybody please let me know my mistakes? ---- Loading required ...
    Eduwin PakpahanEduwin Pakpahan
    May 4, 2005 at 8:25 am
    May 4, 2005 at 10:35 am
  • In the process of learning R, with a specific interest on financial time series. While I continue to get through the documents I am more a fan of learning by example and then looking up how each ...
    Jonathan Q.Jonathan Q.
    May 3, 2005 at 10:46 am
    May 4, 2005 at 1:57 am
  • Looks like the files did not go through again. In any case, here is the kinv: please cut and paste and save to a file: -1.16801E-03 -2.24310E-03 -1.16864E-03 -2.24634E-03 -1.17143E-03 -2.25358E-03 ...
    Globe TrotterGlobe Trotter
    May 3, 2005 at 4:18 am
    May 3, 2005 at 1:29 pm
  • I just discovered that when the VGAM package (not on CRAN) is loaded, glm() doesn't work. This is because VGAM defines a family function() which gets found by glm() in place of the family function ...
    Kjetil Brinchmann HalvorsenKjetil Brinchmann Halvorsen
    May 28, 2005 at 10:46 pm
    May 30, 2005 at 3:45 pm
  • hi netters I have a rather simple question. I have a data frame with two variables X and Y, both of which are factors. X has 100 levels while Y has 10 levels only. The data frame has 100 rows in all, ...
    Zhihua liZhihua li
    May 30, 2005 at 9:15 am
    May 30, 2005 at 2:54 pm
  • Is there a proper function for transforming a character to a number instead of using i=match('c',letters) # 3 Thanks. Josef Eschgf??ller -- Josef Eschgf??ller Dipartimento Matematico Universita' di ...
    Josef EschgfaellerJosef Eschgfaeller
    May 27, 2005 at 2:09 pm
    May 30, 2005 at 9:57 am
  • Hi, I have a factor and I would like to find the most frequent level. I think my current approach is a bit long winded and I was wondering if there was a more elegant way to do it: x <- ...
    Rajarshi GuhaRajarshi Guha
    May 26, 2005 at 2:36 pm
    May 26, 2005 at 3:15 pm
  • Hi R People: A few weeks ago, someone put a link to a website for "how to" for building R packages. It was very nice. But of course, I have misplaced the link. Does anyone still have that, please? It ...
    Laura HoltLaura Holt
    May 24, 2005 at 3:22 am
    May 26, 2005 at 1:36 pm
  • Dear list, I need to plot four almost horizontal lines with y-values around 1,3,4, 400. If I plot them directly, the first three lines will be indiscernible so I am thinking of breaking y-axis into ...
    Bo PengBo Peng
    May 24, 2005 at 1:59 am
    May 25, 2005 at 7:13 am
  • Hi all, hope you having a nice day, I ahve this weird results with identical (probably I am not understanding correctly what it does ...) I have these two data frames and I issue : [1] FALSE However, ...
    Jean EidJean Eid
    May 20, 2005 at 4:23 pm
    May 21, 2005 at 4:22 pm
  • Hello, I am very new to R, and this is certainly and uber-newby question: I am trying to read a vector of numeric data that contains the log of daily DJI returns and simply plot a histogram of it ...
    Alex KAlex K
    May 20, 2005 at 7:22 pm
    May 20, 2005 at 8:49 pm
  • Hi all, unique values in the vector. For example, x<-c(2 ,1 ,2, 1, 4 ,2 ,1, 4 ,1 ,1) xu<-unique(x) xn<-numeric(length(xu)) for (i in 1:length(xu)) {xn[i]<-length(which(x==xu[i]))} There must be a ...
    Ravi VishnuRavi Vishnu
    May 20, 2005 at 2:48 pm
    May 20, 2005 at 4:25 pm
  • Dear all, I'd appreciate any hints how to arrange some plots. I have three plots. I would like to arrange them in the following order: - Plot 1 and Plot 2 should be in the upper row - Plot 3 should ...
    Rau, RolandRau, Roland
    May 19, 2005 at 10:42 am
    May 19, 2005 at 4:53 pm
  • Hi. I need to draw a circle whit center (a,b) and radio r. So I use the R code below a<-1.975 # valore x del centro b<-1.215 # valores y del centro r<-1.46 # radio x1<-seq(a-r,a+r,by=0.01); #los ...
    Mario MoralesMario Morales
    May 19, 2005 at 10:14 am
    May 19, 2005 at 12:33 pm
  • I have a simple question, but I couldn't find the answer in R manuals. Assume I have a list: [[1]] [1] 1 2 3 [[2]] [1] 11 22 33 [[3]] [1] 111 222 333 How to use list index to get a vector of, say, ...
    May 17, 2005 at 12:50 am
    May 17, 2005 at 1:55 am
  • Hi All, I want to read 256 1000x1000 matrices into R. I understand that it is unlikely that I can do this but In the hope that somebody can help me I am mailing this list. I have tried increasing my ...
    May 13, 2005 at 12:38 pm
    May 13, 2005 at 11:57 pm
Group Navigation
period‹ prev | May 2005 | next ›
Group Overview
groupr-help @

576 users for May 2005

Uwe Ligges: 107 posts Prof Brian Ripley: 94 posts Gabor Grothendieck: 79 posts Liaw, Andy: 42 posts Duncan Murdoch: 34 posts Peter Dalgaard: 29 posts Sander Oom: 28 posts Berton Gunter: 25 posts Spencer Graves: 24 posts Ted Harding: 22 posts Douglas Bates: 21 posts Sean Davis: 21 posts Thomas Lumley: 21 posts Sundar Dorai-Raj: 20 posts Omar Lakkis: 18 posts Frank E Harrell Jr: 15 posts Globe Trotter: 15 posts Huntsinger, Reid: 15 posts Paul Murrell: 15 posts Robin Hankin: 15 posts
show more