similar to: disable lazy-loading in install.packages() ?

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 -- __________________________________________________ Ulrich Leopold MSc. Department of Physical Geography Institute for Biodiversity and Ecosystem Dynamics Faculty of Science University

Dear list, could someone point me to the normal score transform and it's use in R? I would like to transform my data with normal score transform, do some geostatsitical predictions and would like to transform the estimated values back including the estimation variance. Any suggestions? Ulrich -- __________________________________________________ Ulrich Leopold MSc. Department of

Dear list, I get the following message while trying to append an object to a file. In addition it is not appended. Do you know why? > write.table(PoxAv, "/home/uleopold/lsk_PoxAv", append=TRUE , quote=FALSE, sep="\t") Warning message: appending column names to file in: write.table(PoxAv, "/home/uleopold/lsk_PoxAv", append = TRUE, Regards, Ulrich --

Dear list, I get a syntax error for the following function: for(na.omit(sqrt(D))>2) {na.omit(A)-(na.omit(B)+(na.omit(sqrt(C))))} Any idea what is wrong? I am using R 1.8.1 on Linux, Kernel 2.4.21-i686. Regards, Ulrich -- __________________________________________________ Ulrich Leopold MSc. Computational Bio- and Physical Geography (CBPG) Institute for Biodiversity and Ecosystem

How can I extend the axis of truehist with negative values. I need to plot residuals from a stepwise regression. Ulrich -- __________________________________________________ Ulrich Leopold MSc. Department of Physical Geography Institute for Biodiversity and Ecosystem Dynamics Faculty of Science University of Amsterdam Nieuwe Achtergracht 166 NL-1018WV Amsterdam Phone: +31-(0)20-525-7456

Hi, I have the following function: TEST <- cbind(Pox0t30.stone.1990.2000, sqrt(apply(Pox0t30.stone.1990.2000[,2:11], 1, var))) In rhe resulting Object TEST the added column is titled: sqrt(apply(Pox0t30.stone.1990.2000[,2:11], 1, var) I would like to change it to a sensible variable name like PoxMean. How can I incorporate this into the above function? Ulrich --

Dear list, I have a problem to install the GRASS_0.1-4.tar.gz on RedHat7.1 Linux. The gmake5 is missing. But I am not quite sure what it is? Is it a gnu version of MAKE? I could not locate it on my system and I do not know what is really meant. Any experience? I get the following message: ---------------------------------------------------- bash-2.04$ R CMD INSTALL -l

Dear all, I noticed that the r-base package for Ubuntu 8.04.1 do not have the tcltk support compiled in. Would it be possible to correct this? > echo "capabilities()" | R --no-save | tail -6 [Previously saved workspace restored] > capabilities() jpeg png tcltk X11 aqua http/ftp sockets libxml TRUE TRUE FALSE TRUE FALSE TRUE

Dear list, I get the following message when I use rcorr in library "Hmisc" ------------------------------------------------------ > rcorr(lskPox0t30, type=c("spearman")) Error in "[<-.data.frame"(*tmp*, is.na(x), value = 1e+30) : matrix subscripts not allowed in replacement ------------------------------------------------------ I do not understand

Dear list, I am using R 2.1.1 on a Fedora 3 Linux, 32 bit PC. If I compute the aggregated mean and the standard deviation I get standard deviation values for factors where the mean was not computed. It seems to me that this is somehow related to the NA values. But I don't quite understand what is going wrong? Could it be related to the data import already? Some of the imported data got the

Dear list, First my information: platform i386-pc-linux-gnu arch i386 os linux-gnu system i386, linux-gnu status major 2 minor 3.1 year 2006 month 06 day 01 svn rev 38247 language R version.string Version 2.3.1 (2006-06-01) Now my question: How is it possible that a command in an R script is not

Dear list, I would like to make a comment how to solve the X11 font problem under SuSE Linux (9.0) when you get the message: "X11 font at size 16 could not be loaded". After having modified /etc/X11/XF86config as root (see below) you have to run 'SuSEconfig' as root as well else nothing might be changed in the X-Server. After that no further messages should appear. HTH,

Dear list, Iget the following error message: > help.search("omit.na") Error in loadNamespace(name) : package 'tools' does not have a name space I do not quite understand what it means in this case. Is something corrupt in the installation? I run R-1.8.1 in Linux RedHat 9 with kernel 2.6.2 on Intel P4. Regards, Ulrich --

Dear list, since I have installed GRASS_0.1-8.tar.gz (devel) with R 1.4.1 on RedHat7.1 Linux I get the following message when I want to save the workspace image: -------------------------------------------------- Save workspace image? [y/n/c]: y Error in file(file, "wb") : cannot open file `.RDataTmp' ------------------------------------------------- Where can I find the

Dear list, I get random terminations of R-2.6.2 when using RODBC-1.2_3 and a remote PostgreSQL-8.2.6 database, unixodbc-2.2.11-16, odbc-postgresql-1:08.01.0200-2.1 on Ubuntu Linux 7.10. The exact messages can be seen below. It seems that there is some memory corruption going on. But it seems random to me and can neither be related to addPK=T/F or fast=T/F. It happens for all possible

Dear list, how can I write the following two lines in one function: > Pox2 <- ave(lsk0t50$Pox2, lsk0t50$ProfN, Fun=is.na(lsk0t50$Pox2)) > Pox2 <- data.frame(Pox2) The following does not work: > Pox2 <- data.frame(Pox2 <- ave(lsk0t50$Pox2, lsk0t50$ProfN, Fun=is.na(lsk0t50$Pox2))) > names(Pox2) [1]

Dear list, I would like to rename an object as follows: SimLUall <- matrix(c(0,1,0,0, 1,0,0,0, 0,0,1,0, 0,0,0,1),nrow=4, ncol=4) j <- 2 SimLUall2 <- SimLUall and j The value of j should be assigned automatically to SimLUall. How can I achieve this? Regards, Ulrich

Dear list, is there a way of updating the search path when using attach() for a data set. I am overwriting a variable in a data frame. To update teh search path I do the follwoing: > attach(dataset) > some data manipulation of dataset > detach(dataset) > attach(dataset) # to update the search path Is there a way to avoid the numerous detach() and attach() commands? Thanks in

Dear list, I get the following message while computing truehist in R 1.4.1 on Redhat Linux 7.1: > truehist(lsk$Pox, nbins = "FD" , prob = TRUE, xlab = "Pox [mmol/kg]") Error in switch(casefold(nbins), scott = nclass.scott(data), "freedman-diaconis" = , : couldn't find function "nclass.fd" Maybe the "nclass.fd" should be

I've rolled up R-1.5.1.tgz a short while ago. This is a patch upgrade, fixing the most important bugs that cropped up after the 1.5.0 release. A set of recommended packages which have been tested with R-1.5.1 has been bundled up. Binary distributions should include these packages. You can get the files from the developer site ftp://cvs.r-project.org/pub/CRAN/src/base/R-1.5.1.tgz