search for: s195404

Dear R experts, format(12345678, digits = 2) gives [1] "1.2e+07" while format(1234567, digits = 2) gives [1] "1234567" but I'd like the last number to be represented as "1.2e+06" string too. Where am I wrong? Thanks, Timur.

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

...er=TRUE) [1] 425 248 I wonder if someone could be kind enough to point out what I've done wrong or suggest some tips for managing this, please? Thanks for your advice! Regards, Andrew C. Ward Department of Chemical Engineering The University of Queensland Brisbane Qld 4072 Australia s195404 at student.uq.edu.au acward at tpg.com.au

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

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

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

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.

...), VPdtw (2.1-6), vrmlgen (1.4.4), wavelets (0.2-6), waveslim (1.6.4), wavethresh (4.5), wgaim (0.99-1), wle (0.9-4), WMCapacity (0.9.5.0), wmtsa (1.0-5), wordnet (0.1-6), xlsx (0.2.1), xlsxjars (0.2.0), XML (3.1-0), xts (0.7-1), yaImpute (1.0-11), zoo (1.6-4) New reviews ----------- * survey, by s195404 http://crantastic.org/reviews/79 * RODBC, by s195404 http://crantastic.org/reviews/78 This email provided as a service for the R community by http://crantastic.org. Like it? Hate it? Please let us know: cranatic at gmail.com.

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 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,

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 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",

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