similar to: Australian CRAN mirror

Dear R users, I'm having trouble using aggregate() and would greatly appreciate your advice. I am using R 1.5.1 on Windows 2000. I want to call my function in the following way extract.data(x=dat[, "Age", "Year"]) where extract.data() uses aggregate() to count the number of cases for each combination of "Age" and "Year". I've defined

Dear David, If you have sufficient RAM you can increase the amount R uses by adding the switch "--max-mem-size=1024M" to the command you use to start R (change 1024 to whatever amount of RAM you have). If you don't have lots of RAM, you may have to draw just a subset of data. If you're developing or testing a model this will be okay, as long as you choose enough samples.

Is your data such that it can be restructured into a form amenable to a lattice plot, such as xyplot()? In that case, the legend (key in lattice) can be placed pretty much anywhere. Regards, Andrew C. Ward CAPE Centre Department of Chemical Engineering The University of Queensland Brisbane Qld 4072 Australia andreww at cheque.uq.edu.au On Friday, January 17, 2003 10:22 PM, Vumani Dlamini

Hello R users, Thank you very much to those who responded so quickly and helpfully to my question about update.packages() and Windows 2000. I am grateful to Thomas Lumley, Jason Turner, Prof Brian D Ripley, Uwe Ligges and Andy Liaw (at least). The solution was simply to use internet2.dll rather than internet.dll. I'm sorry I didn't spot this in the documentation. Thank you again. As

Hello R users, I'm using xyplot (lattice) to plot some data. Unfortunately, the text that goes into each strip is often too big to fit. For instance, one of the factors may be labelled "Satisfaction with waiting time" which is too wide to fit. If I use split.string() to wrap it onto two lines it is then too high to fit in the strip. I'd prefer to apply split.string on the

Dear R users, Sorry if this has been discussed before. I was recently looking at the MySQL site and saw that they offer various levels of paid support. The support options range from basic email support (USD200) through to extensive telephone support from the development team (USD10000). These are annual prices. This is something I would be happy to see available with R (maybe it is?). My

Hello R users, I wish to draw a type of horizontal bar chart for two groups (males and females). The values for one group will start at the y-axis and point to the left, and the values for the other group will start at the y-axis and point to the right. If you're (un)lucky, the resulting graph can assume the shape of a Christmas tree. The data are left.side <- c(107092, 113053,

I have written the following function to calculate the weighted mean difference for univariate data (see http://www.xycoon.com/gini_mean_difference.htm for a related formula). Unsurprisingly, the function is slow (compared to sd or mad) for long vectors. I wonder if there's a way to make the function faster, short of creating an external C function. Thanks very much for your advice. gmd

Thanks to the efforts of Jason Andrade at AARNET and the CRAN people there is now an Australian mirror of CRAN/R. The mirror will be updated daily. It is http://mirror.aarnet.edu.au/CRAN/ ftp://mirror.aarnet.edu.au/pub/CRAN/ To quote the web page "R, also known as `GNU S', is a system for statistical computation and graphics. It consists of a language plus a run-time environment with

I would appreciate some advice on the following task. I have some data that currently looks like this: t1 <- data.frame(id=c(1,1,2,2), aspect=c("A","B","A","B"), score=c(10,9,11,12)) I'd like it to look like this: id A B 1 10 9 2 11 12 reshape() looks like a good candidate for this job but I'm not really sure about the roles of

Dear R users, I am using R Version 1.3.0 (2001-06-22) under Windows 2000 Professional (SP 2). When I try "Packages"->"Update packages from CRAN" the result is something like trying URL `http://cran.r-project.org/bin/windows/contrib/PACKAGES' unable to connect to 'cran.r-project.org'. Error in download.file(url = paste(contriburl, "PACKAGES",

Dear list, I'd like to update certain rows/columns in a data frame with new values. The application is that survey respondents may give an answer of "Other" to a categorical question and then provide some text describing what they mean. This text is then reviewed and placed into a category. These edits or recodes then need to be merged back into the main dataset. A small example

Dear list, I have a data frame of survey respondents, a little like this: set.seed(20081215) n <- 100 dat <- data.frame(id=1:100, addr1=sample(LETTERS, n, replace=TRUE), addr2=sample(LETTERS, n, replace=TRUE), addr3=sample(LETTERS, n, replace=TRUE)) head(dat) id addr1 addr2 addr3 1 1 R H Q 2 2 H C K 3 3

Dear All, I've been using R for windows for a while, without too many problems. However, I'm forced to use the MAC OS system for teaching, because our teaching labs are mac only (not my idea!!). I have a very basic problem, but one that doesn't appear on the FAQs. I simply want to import data from a spreadsheet. I'm using exactly what works fine on Windows, namely: 1 save

Dear users, is anybody of you aware of a R command to perform laplace transform or even its inversion? Thank you very much. Luca

My computer is a pentium 4 running at 2.4 GHz. My R is 1.7.1 I have written a program in R that calls C++. The program spends most of the time in C++ ( > 90% ). R basically deals with output and input. How slower can this be compared with the program I would get from rewriting everything in C++? Thank you.

Hi, I am running a loop to plot multiple plots. In s-plus, it shows multiple pages in the graphic window to allow checking on each plot. but in R, the next plot always overwrite the previous one, so i can only have the last plot produced, is there a way to have multiple pages in the graphic window just like S-plus does? Thanks

Dear R-help, I am using R 2.1.1 on Windows XP. I have a tab-delimited data file that has been exported by SAS. The file is reasonably big so I apologise that I can't give a good toy example. I do this: table(count.fields("t1.txt", sep="\t", quote="\"")) 248 809 So I have 809 lines, each with 248 fields. There's something wrong with

HLM question? Is there a minmum number of observations required for a category..I have individusals in work teams.I have incomplete data for all the teams ..sometimes I only have data for one person in a team.I assume that HLM can't work here! But what would be the mimimal.at the moment I have a sample of about 240 in about 100 teams with teamsizes form 2 to 5. Any advice? Thanks

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 dimension? for instance, tmp[8] is equivalent to tmp[2,2,2]. I'd like to derive the vector (2,2,2) from the index 8. thanks, Brad Buchsbaum