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Hello R-helpers, I'm plotting a scatter plot matrix, but have more variables to consider than will legibly fit on one page. I'd appreciate some help on how I can persuade pairs or splom to plot the full...

Dear R-helpers, I'd like to be able to post-process contours coming from contour(). Does anyone have a version of contour() (or something similar) which will return the contour coordinates? In searching the archives I've come across...

I've just updated from R-2.5.1 to R-2.6.0, under Windows XP. Is there a simple way to reload into R-2.6.0 all the packages I had loaded under R-2.5.1...

Dear all, The MASS library provides a mvrnorm function to generate random numbers from a multivariate normal distribution, similar to S-Plus's rmvnorm, but is there an R-equivalent to pmvnorm, which generates probabilities from a multivariate normal? With...

Dear list members, Does anyone have any code to carry out the Anderson-Darling test for goodness-of-fit of an empirical distribution function to a theoretical one? In particular, I'd like to calculate the p-values for the...

This typically occurs because of sloppy manual data entry outside of R. To relieve further analysis pain, you can manually clean the data (usually only effective for one-time analyses) or use R to fix problems right after loading the...

tom soyer <tom.soyer <at> gmail.com> writes: > > Hi, > > I just discovered decompose() and stl(), both are very nice! I am wondering > if R also has a function that calculates the seasonal index, or make the > seasonal adjustment directly using...

Dear list, When I try to use lines.formula with subset and another argument I get an error. e.g. x<-1:5 y<-c(1,3,NA,2,5) plot(y~x, type="n") # set up frame lines(y...

Hello r-help, I'm trying to split a character vector of dates of the form "dd-mmm-yy" into component days, months and years. But > library(chron) > testdate<-as.POSIXlt(strptime("17-Sep-98","%d-%b-%y")) > testdate [1...

Dear list, I'm plotting a lattice plot xyplot(Volume ~ Weight | as.character(DateTime)) where DateTime is a POSIXlt object. This produces strip labels in the format e.g. "2007-11-15 23:15:00" and panels are plotted in...

Dear R list, The code below puts qq-plots for two of three groups on the one plot. However the legend includes all three groups, ie the auto.key ignores the subset instruction. Is there an easy way to get...

I've recently had a series of similar errors trying to install packages to R 2.1.1 running under Windows XP. > utils:::menuInstallLocal() package 'randomForest' successfully unpacked and MD5 sums checked updating HTML package descriptions Warning message: unable to...

I'm trying to fit a Cox proportional hazards model to some hospital admission data. About 25% of the patients have had at least one admission, and of these, 40% have had two admissions within the 12 month period of...

Petr Pikal wrote: Dear all I am quite confused by rpart plotting. Here is example. set.seed(1) y <- (c(rnorm(10), rnorm(10)+2, rnorm(10)+5)) x <- c(rep(c(1,2,5), c(10,10,10)) fit...

Hi Daniel, Sorry, it may have been clearer if I had used "subjects" instead of "patients". The treatments were administered to all subjects, and then in the succeeding 12 months, some were hospitalised and some were not. Hence only about...