similar to: Logit and Probit for Panel data

Dear experts, when trying to estimate an kernel density function with density(x) I get the following error message with imported data from either EXCEL or text files: Error in density(spr) : argument must be numeric. Other procedues such as truehist work. If I generate data within R density works fine. Does anybody have an idea? Yours -- Christoph Hanck Wissenschaftliche Hilfskraft

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Niels Waller wrote: > Does anyone know of an R (or S-PLUS) function for delineating all possible > combinations and permutations? The following function delivers all permutations of 1:n. all.perm <- function(n) { p <- matrix(1, ncol = 1) for (i in 2:n) { p <- pp <- cbind(p, i) v <- c(1:i, 1:(i - 1)) for (j in 2:i) { v <- v[-1]

Is this a bug? >"xx" <- c(50, 79, 120, 78, 90, 100, 78, 80, + 90, 80, 60, 39, 90, 85, 140, 100, 80, 80) > boxplot.stats(xx)$stats [1] 60 78 80 90 100 > boxplot.stats(0.1*xx)$stats [1] 7.8 7.8 8.0 9.0 10.0 I suppose the way the numbers in 0.1*xx are internally stored may cause this problem: > formatC(0.1*xx[2],format="f",digits=16) [1]

Hello all, I wonder if there is a package including a program to display a 3dim histogram. Thanks. --- D.Trenkler --- **************************************************************************** ***** Dr. Dietrich Trenkler (dtrenkler at nts6.oec.uni-osnabrueck.de) Statistik / Empirische Wirtschaftsforschung Universitaet Osnabrueck Rolandstrasse 8

I suspect that there is bug in sub when using "?": > string_"This is a bug!" > sub("!", ", or isn't it?", string) [1] "This is a bug, or isn't it?" > string_"This is a bug?" > sub("?", ", or isn't it?", string) [1] "This is a bug?" Regards, *** D.Trenkler ***

I think I've discovered what went wrong. My workspace included a function wilcox.test formerly copied from ctest. Now ctest ist part of the distribution and because of that I always got the message: [Previously saved workspace restored] Error in autoload("wilcox.test", "ctest") : Object already exists I didn't take care of this message. Now I removed

Dear "Debuggers", please have look a the following: > plot(0:1,0:1,type="n") > points(c(0,0.5,1),c(0,0.5,1)) > dev.print(device = postscript, width=5 , height=5, file="test1.ps") windows 2 ># This worked > dev.print(device = pdf, width=5 , height=5, file="test1.pdf") windows 2 ># That also >

Say I have a FOR-loop for computing powers (just a trivial example) for(i in 1:5) { x<-i^2 y<-i^3 } How can I create a data.frame and a 3D plot of (i,x(i),y(i)), i.e. for each iteration Thanks, Serguei Kaniovski -- ___________________________________________________________________ ??sterreichisches Institut f??r Wirtschaftsforschung (WIFO) Name: Serguei Kaniovski

I have a vague recollection of seeing a R-function that will output a table or matix in a format suitable for the tabular enviroment in LaTeX. But I cannot find it. Any hints? Bendix ---------------------- Bendix Carstensen Senior Statistician Steno Diabetes Centre Niels Steensens Vej 2 DK-2820 Gentofte Denmark tel: +45 44 43 87 38 mob: +45 28 25 87 38 fax: +45 44 43 73 13 bxc at novo.dk

I'm an old APL fossil and I got used to work with nested arrays there. In APL(2) you can write 1+(1 2 3)(4 5 6 7 8 9) and get (2 3 4)(5 6 7 8 9 10). A similar concept is R's lists. So it takes me by surprise to learn that 1+list(1:3,4:9) delivers an Error in 1 + list(1:3, 4:9) : non-numeric argument to binary operator Is there any particular reason why this doesn't work

# Your mailer is set to "none" (default on Windows), # hence we cannot send the bug report directly from R. # Please copy the bug report (after finishing it) to # your favorite email program and send it to # # r-bugs@biostat.ku.dk # ###################################################### "b" <- c(-5.5, -4, -2.3, -1.5, -1, -0.5, -0.41, -0.33, -0.29, -0.26, -0.2,

I have two lists of equal lengths. Each one consists of vectors. Is there an elegant way to combine them elementwise? Elegant means: without loops. For instance, for > jja_list(1:3,4:7) > jjb_list(rep(0,4),(2,5)) I would like to get: > list(c(1:3,rep(0,4)),c(4:7,rep(2,5))). --- D.Trenkler --- ************************************************************************ *********

For some small sample sizes I would like to exemplify the combinatorics underlying certain nonparametric tests like Mann-Whitney-Wilcoxon, Kruskal-Wallis and Spearman's rank correlation. I have written a function all.perm which delivers all permutations of 1,2,...,n and which works reasonably well. This can be used to generate P(R=r) of Spearman's rank correlation:

I've a vector of pairwise correlations in the order low-index element precedes the high-index element, say: corr(1,2)=0.1, corr(1,3)=0.2, corr(2,3)=0.3, corr(3,4)=0.4 How can I construct the corresponding correlation matrix? I tried using the "combn"-function in "combinat" package: library(combinat) combn(c(0.1,0.2,0.3,0.4),2) , but to no avail... Thank you for your

It took me by surprise to find that choose(4,5) delivers [1] NaN Warning message: NaNs produced in: choose(n, k) If we look at choose(4,5) as the number of ways of choosing 5 objects from 4 I would have expected 0 as result. Furthermore dhyper(5,4,6,5) does deliver 0 and this essentially equivalent to choose(4,5)*choose(6,0)/choose(10,5).

Excuse me if this question has been answered before. I just came across "Writing R documentation" in the "Writing R extensions" manual. Under section 2.9: "Processing Rd format" I only find hints at generating the Rd format on a Unix platform. Have I overlooked how to generate them under Windows? Any help is gratefully appreciated. --- D.Trenkler ---

Dear R-Team, sorry for bugging (:-)), it's me again. In the FAQ coming along with the R distribution it reads: If R executes an illegal instruction, or dies with an operating system error message that indicates a problem in the program (as opposed to something like "disk full"), then it is certainly a bug. This encourages me to describe a crash I encountered a few minutes ago. I

# Your mailer is set to "none" (default on Windows), # hence we cannot send the bug report directly from R. # Please copy the bug report (after finishing it) to # your favorite email program and send it to # # r-bugs@biostat.ku.dk # ###################################################### Under R version 0.6.51 the following A_c(13,9,15,5,25,15,3,9,6,12) B_c(42,24,41,19,27)

n_10;p_0.5;jjx_0:n;qbinom(pbinom(jjx,n,p),n,p) # This one works as expected n_100;p_0.5;jjx_0:n;qbinom(pbinom(jjx,n,p),n,p) # This one causes severe problems I cannot interrupt using ESC and I finally have to resort to the Windows Task manager to kill the R session. A friend of mine told me that he faced similar problems under Unix. --please do not edit the information below-- Version: