Grokbase Groups R r-help July 2003
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443 discussions - 1,347 posts

  • hi, can anyone help me about the simple data probability-value of the F-test, respectively p-value, shown in the summary of a linear model? somehow i can not retrieve this data out of R+ into my ...
    Joerg-BurmesterJoerg-Burmester
    Jul 7, 2003 at 11:49 am
    Aug 28, 2003 at 5:36 pm
  • Hi there I thought this would be of particular interest to people using 'optim' functions and perhaps people involved with R development. I've been beaten down by R trying to get it to perform an ...
    Michael RennieMichael Rennie
    Jul 15, 2003 at 5:46 pm
    Aug 4, 2003 at 3:30 pm
  • Hello to all, I'm a biologist trying to tackle a "fish" (Poisson Regression) which is just too big for my modest understanding of stats!!! Here goes... I want to find good literature or proper ...
    Vincent PhilionVincent Philion
    Jul 24, 2003 at 10:07 pm
    Jul 26, 2003 at 5:33 pm
  • Hi, I just encountered a problem in R that may easily be fixed: If one uses attach for a data.frame e.g. 10000 times and forgets detach, then R gets incredibly slow (less then 10% of the original ...
    Andreas EcknerAndreas Eckner
    Jul 31, 2003 at 11:39 am
    Aug 4, 2003 at 7:20 pm
  • HI I'm a student in chemical engineering, and i have to implement an algoritm about FIVE PARAMETERS INTERPOLATION for a calibration curve (dose, optical density) y = a + (c - a) /(1+ e[-b(x-m]) where ...
    Andrea CalandraAndrea Calandra
    Jul 10, 2003 at 3:39 pm
    Jul 17, 2003 at 4:39 pm
  • Hi, Suppose I have a multidimensional array: tmp <- array(1:8, c(2,2,2)) is there a function out there that, given a one-dimensional array index, will return the separate indices for each array ...
    Buchsbaum, Brad (NIH/NIMH)Buchsbaum, Brad (NIH/NIMH)
    Jul 30, 2003 at 8:42 pm
    Aug 4, 2003 at 8:20 am
  • Hola! Starting with rw1071, just after starting Rgui the scope is not with Rconsole, but some other place. This means I have to do a mouse click in the Rconsole before starting to write the first ...
    Kjetil brinchmann halvorsenKjetil brinchmann halvorsen
    Jul 17, 2003 at 4:42 pm
    Jul 22, 2003 at 1:36 pm
  • Hi, perhaps a little bit unusual: is it possible to use "<- " as generic function with a new signature? The following example doesn't work: An object of class "B" Slot "x": numeric(0) Method ...
    Thomas KoenigThomas Koenig
    Jul 26, 2003 at 9:47 am
    Jul 28, 2003 at 2:29 pm
  • Thanks for Prof. Ripley and Andy for your technical explantion. It seems that that the real CPU speed has not advanced as fast as these Ghz or other performance indicator suggest. Yes, my program is ...
    Jason LiaoJason Liao
    Jul 23, 2003 at 9:23 pm
    Jul 26, 2003 at 10:54 am
  • Dear R programmers, is there a sensible explanation for the following behaviour? The second command seems not to be interpreted correctly. [1] FALSE TRUE FALSE I am running R version 1.7.1 on XP and ...
    Marc VandemeulebroeckeMarc Vandemeulebroecke
    Jul 14, 2003 at 7:29 am
    Jul 15, 2003 at 7:44 am
  • Hello! Some CS-guys (the type who knows what Church formalism is) keep asking me questions about formal definitions of R-language that I can not answer (or even understand). Is there some freely ...
    M.KondrinM.Kondrin
    Jul 17, 2003 at 5:43 pm
    Jul 21, 2003 at 2:35 am
  • Hi, I've got a wireframe 3D surface plot, but I don't want a frame around it. Is there any way to remove the frame, or (worst case) change the color of the frame to the background color (which looks ...
    Alexis J. DiamondAlexis J. Diamond
    Jul 24, 2003 at 7:44 pm
    Jul 25, 2003 at 1:20 pm
  • Hi, I have something like this: Analysis of Variance Table Response: y Df Sum Sq Mean Sq F value Pr( F) x 1 4062.9 4062.9 400.04 2.990e-13 *** f 1 4421.5 4421.5 435.35 1.496e-13 *** Residuals 17 ...
    Ronaldo Reis Jr.Ronaldo Reis Jr.
    Jul 21, 2003 at 3:46 pm
    Aug 27, 2003 at 4:55 pm
  • Hi Thanks once again for your help, I do appreciate it..... however.... Here is what I get with your test.... (under tcsh - i normally use bash, but I will keep everything the same) users/mwatson env ...
    michael watson (IAH-C)michael watson (IAH-C)
    Jul 25, 2003 at 8:23 am
    Jul 29, 2003 at 3:12 pm
  • I'd welcome some comments or advice regarding the situation described below. The following illustrates what seems to me to be an inconsistency in the behaviour of matrix subsetting: [,1] [,2] [,3] ...
    Ted HardingTed Harding
    Jul 14, 2003 at 9:59 am
    Jul 15, 2003 at 11:01 am
  • When I am trying to put a legend on a plot where I am using "lines", R just ignores it. I can do it with boxplot or plot, but just not with lines. Am I doing something wrong? Maybe I am just making a ...
    Anna H. PryorAnna H. Pryor
    Jul 1, 2003 at 5:45 pm
    Jul 11, 2003 at 3:56 pm
  • Hi, I'm just wondering how I can do to make a huge postscript plot be manageable. My question is that I have to draw around 60,000 points which makes it painfully slow to print or view in gv or put ...
    Yongchao GeYongchao Ge
    Jul 4, 2003 at 11:06 pm
    Jul 7, 2003 at 2:17 pm
  • Hi I have two lots of numbers which I would like to histogram using the hist() function. For comparative reasons, I want them to be on the same scale, which I can use the xlim and ylim options to ...
    michael watson (IAH-C)michael watson (IAH-C)
    Jul 3, 2003 at 1:02 pm
    Jul 7, 2003 at 2:59 am
  • Has anyone programmed condition indexes in R? I know that there is a function for variance inflation factors available in the car package; however, Belsley (1991) Conditioning Diagnostics (Wiley) ...
    Peter FlomPeter Flom
    Jul 23, 2003 at 2:54 pm
    Jul 27, 2003 at 12:48 pm
  • Dear helpers I want to use rpart several times in a loop to build a classification tree. My problem is that rpart needs a formula as argument and for that the variables need to have names and this ...
    Luis Miguel Almeida da SilvaLuis Miguel Almeida da Silva
    Jul 22, 2003 at 1:48 pm
    Jul 22, 2003 at 2:40 pm
  • I want to maximize a conditional likelihood function that is basically logistic conditional on the number of successes within strata. What would be a good starting place for this? A complication is ...
    Ross BoylanRoss Boylan
    Jul 17, 2003 at 9:10 pm
    Jul 18, 2003 at 11:02 am
  • I'm using R1.7.0 runing with Win XP. Thanks, ...Tao ???????????????????????????????????????????????????????? [,1] [,2] [1,] 149 151 [2,] 1 8 [,1] [,2] [1,] 149 1 [2,] 151 8 Pearson's Chi-squared test ...
    Tao ShiTao Shi
    Jul 15, 2003 at 7:18 pm
    Jul 16, 2003 at 10:33 am
  • Daer all, I have the problem. I could not run the regression, because I have always the warning message "memory.size". from the help file I learned that it is possible to increase the memory size, ...
    Silika TereshchenkoSilika Tereshchenko
    Jul 13, 2003 at 12:54 pm
    Jul 14, 2003 at 5:23 pm
  • Hi I am trying to replicate a vector in n rows for comparison purposes with another matrix. foo <- c(1,2,3) bar <- rbind(foo,foo) # does the trick for 2 rows bar <- rbind(rep(foo,2)) # does something ...
    David AndelDavid Andel
    Jul 8, 2003 at 1:58 pm
    Jul 8, 2003 at 2:15 pm
  • Hi. I got a problem, perhaps someone can help me....... every time, when I want to plot data, both axis are labeled by default like data[1,] and data[2,] how can I make a plot without ANY labeling? ...
    Michael KirschbaumMichael Kirschbaum
    Jul 31, 2003 at 10:22 pm
    Aug 8, 2003 at 11:53 pm
  • I wanted to annotate some points on lines, above and below the lines. I thought the easiest way would be to use text() and two pos values. However I found when the text was rotated the space and ...
    P.b.pynsentP.b.pynsent
    Jul 29, 2003 at 9:04 am
    Jul 31, 2003 at 4:02 pm
  • Hi, I want to make a plot with abline where the area below or above the curve is shaded. I can't find any documentation on that. Can anybody help me with that? thanks, Juffi
    Johannes FuernkranzJohannes Fuernkranz
    Jul 22, 2003 at 10:10 am
    Jul 22, 2003 at 1:41 pm
  • R- Users: Can someone indicate what I am during wrong? This is a script essentially from Venerable & Ripley's text on interpolating a surface with loess function but I can not get it to run. Thanks ...
    John lewisJohn lewis
    Jul 21, 2003 at 5:45 pm
    Jul 21, 2003 at 9:19 pm
  • Not really r-specific: Z = (b1 - b2) / SQRT ( SEb1^2 + SEb2^2) -------Original Message------- From: Gijsbert Stoet <stoet at volition.wustl.edu Sent: 07/20/03 09:51 PM To: r-help at stat.math.ethz.ch ...
    Brett MagillBrett Magill
    Jul 21, 2003 at 2:12 am
    Jul 21, 2003 at 12:58 pm
  • Hi, I have been trying to work with error terms given back from aov to make confidence intervals. However, the numbers seem to be incorrect. If there is more than one term in the ANOVA then the error ...
    John ChristieJohn Christie
    Jul 12, 2003 at 12:20 am
    Jul 12, 2003 at 10:47 pm
  • I have some questions and comments on timezones. Problem 1. # get current time in current time zone [1] "2003-07-29 18:23:58 Eastern Daylight Time" # convert this to GMT [1] "2003-07-29 22:23:58 GMT" ...
    Gabor GrothendieckGabor Grothendieck
    Jul 31, 2003 at 4:19 am
    Aug 4, 2003 at 6:50 am
  • Hi there R-Helpers, Does anyone know if it is possible to sort a dataframe? I.e. Sort alphabetically column 1 ( which has some reocurring elements) then sort alphabetically column2 but keeping the ...
    Wayne JonesWayne Jones
    Jul 16, 2003 at 1:42 pm
    Aug 3, 2003 at 8:31 pm
  • Thomas, Getting the active cell is easy, just use : row <- tclvalue(tkindex(table1,"active","row")) col <- tclvalue(tkindex(table1,"active","col")) But if you try to catch the left-button-click event ...
    James WettenhallJames Wettenhall
    Jul 29, 2003 at 12:47 am
    Jul 29, 2003 at 9:50 am
  • Guess what I have no clue what i am doing/ meant to do with R. i have just begun statistics for uni and all commands don't seem to work, they say syntax error, we are meant to put a hist.r in but ? ...
    Jill irwinJill irwin
    Jul 28, 2003 at 6:08 am
    Jul 28, 2003 at 9:26 am
  • Hi R lovers! I'd like to know how to use the parameter 'start' in the function fitdistr() obviously I have to provide the initial value of the parameter to optimize except in the case of a certain ...
    Vincent StoliaroffVincent Stoliaroff
    Jul 25, 2003 at 2:50 pm
    Jul 25, 2003 at 3:10 pm
  • Dear list, If I have this toy function: toy <- function(b=.95){ toyframe <- data.frame(lion.95 = c(1, 2)) return(toyframe) } How can I obtain that for any value b, the name of the column becomes ...
    Tobias VerbekeTobias Verbeke
    Jul 25, 2003 at 10:16 am
    Jul 25, 2003 at 11:23 am
  • Hi, I was trying to draw an empirical distribution function with uniform confidence bands. So I tried to find a way to calculate values of the Kolmogorov-Smirnov Distribution but failed. I guess it ...
    Leif.BoysenLeif.Boysen
    Jul 21, 2003 at 1:42 pm
    Jul 24, 2003 at 11:18 pm
  • -- Hi R users, I'm trying to fit an animal model using lme and cannot fit the corelation matrix which describes the additive genetic correlation between individuals. I have created a test data set ...
    Jarrod HadfieldJarrod Hadfield
    Jul 23, 2003 at 7:52 am
    Jul 23, 2003 at 2:50 pm
  • Dear helpers Is it possible to plot with a desired character? For example "tr" for training error and "te" for test error. I tried plot(x,y,pch="tr") but only appears "t" in the plot
    Luis Miguel Almeida da SilvaLuis Miguel Almeida da Silva
    Jul 22, 2003 at 4:59 pm
    Jul 22, 2003 at 5:31 pm
  • Hi, all. I'd like know which is the more appropriate C compiler to use with R programs. Thanks, C. ======================================== Cezar Freitas (ICQ 109128967) IMECC - UNICAMP Campinas, SP ...
    Cezar Augusto de Freitas AnselmoCezar Augusto de Freitas Anselmo
    Jul 17, 2003 at 3:04 pm
    Jul 21, 2003 at 2:14 pm
  • Hi I can't get R to connect to the internet. I am running R 1.7.1 on Windows XP and whenever I try to download packages etc from within R using the internet, it fails. OK so I am behind a firewall ...
    michael watson (IAH-C)michael watson (IAH-C)
    Jul 18, 2003 at 9:32 am
    Jul 18, 2003 at 2:32 pm
  • Hello, I have a concrete statistical question: I have a sample of an univariate mixture of an unknown number (k) of normal distributions, each time with an unknown mean `m_i' and a standard deviation ...
    Joke AllemeerschJoke Allemeersch
    Jul 17, 2003 at 3:58 pm
    Jul 18, 2003 at 9:07 am
  • This group impresses me, so far I have been helped with all my questions within 24 hours. Thanks. Therefore another one. I am used to programs (such as STATA) where observations with missing values ...
    Tor A StrandTor A Strand
    Jul 16, 2003 at 10:11 am
    Jul 17, 2003 at 10:00 am
  • Hi. Can anyone help me? I want to create a vector from specific matrix-elements( e.g.[1,1]) these matrices are elements of a list. Is there any possibility to work without a loop? (e.g. with ...
    Michael KirschbaumMichael Kirschbaum
    Jul 16, 2003 at 2:24 pm
    Jul 16, 2003 at 3:00 pm
  • Edoardo AiroldiEdoardo Airoldi
    Jul 9, 2003 at 7:33 pm
    Jul 10, 2003 at 3:37 pm
  • Hi I am struggling in finding a way to sort columns in a matrix. Can anyone help me, please? Thanks a lot, David
    David AndelDavid Andel
    Jul 9, 2003 at 3:39 pm
    Jul 9, 2003 at 4:52 pm
  • Hi I get a matrix with the columns named like "X13 X22 X1 X14 ...", i.e. not successively. That has it's good reasons, but now how can I rename the columns to "X1 X2 X3 ..."? Thanks a lot, David
    David AndelDavid Andel
    Jul 8, 2003 at 4:22 pm
    Jul 8, 2003 at 8:18 pm
  • I have the following problem: I have a vector x of data (0<x<=1 ) with a U-shaped histogram and try to fit a beta distribution using fitdistr. In fact, hist(rbeta(100,0.1,0.1)) looks a lot like my ...
    Agustin LoboAgustin Lobo
    Jul 4, 2003 at 4:16 pm
    Jul 6, 2003 at 4:07 pm
  • I getting compilation errors when trying to install GLMMGibbs (see below). I'm running R v 1.7.1 on SuSE Linux 8.2. Has anyone else had this problem? I tried it on a Win2000/R 1.5.1 combination and ...
    Damien JolyDamien Joly
    Jul 3, 2003 at 8:06 pm
    Jul 3, 2003 at 9:05 pm
  • Dear All, I just upgraded for R-1.7.0 and it starts with the error message: Error in assign("__MethodMetaData", table, envir = where) : unused argument(s) ( ...) typing Error in ...
    Katalin CsilleryKatalin Csillery
    Jul 7, 2003 at 4:58 pm
    Oct 6, 2004 at 10:50 am
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Prof Brian Ripley: 91 posts Spencer Graves: 89 posts Peter Dalgaard BSA: 42 posts Uwe Ligges: 41 posts Liaw, Andy: 28 posts Douglas Bates: 26 posts Ted Harding: 26 posts Duncan Murdoch: 24 posts Thomas Lumley: 24 posts Jerome Asselin: 19 posts Michael Rennie: 14 posts Hotz, T.: 13 posts Kjetil brinchmann halvorsen: 13 posts Martin Maechler: 13 posts michael watson (IAH-C): 13 posts Roger D. Peng: 12 posts M.Kondrin: 11 posts Tobias Verbeke: 11 posts Frank E Harrell Jr: 10 posts Marc Schwartz: 10 posts
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