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Dear all, Is it possible to use the Epi package to fit APC models with additional covariates? I've used other approaches, but really enjoy the convenience functions for visualisation in Epi, and so it would be great if it...

On Jan 9, 2008 5:47 PM, <Sitadri_Bagchi at swissre.com> wrote: > Is there a number I can call to get started with R? I have some really > basic questions that won't take more than 10 minutes. > > Sitadri...

On Dec 10, 2007 5:43 AM, Kapoor, Bharat <k at chicagogsb.edu> wrote: > Thanks in advance - am looking for a Tutorial for doing basic stats. I have already looked/looking at the R-intro.pdf at the R site...

Hi All, I have two shapefiles with point features, A and B. I've managed to import them into R with maptools and spatstat. Now I would like to calculate, for each point in A, the closest distance to any...

On 9/4/07, Werner Wernersen <pensterfuzzer at yahoo.de> wrote: > Hi, > > I am trying to capture the console output of program I > call via system() but that always returns only > character(0). > > For example: > capture.output(system("pdflatex out...

Hi all, I've run into a slightly illogical (to me) behaviour with the "$" subsetting function. consider: > Test A B 1 1 Q 2 2 R > Test$A [1] 1 2 > vector<-"A" > Test$vector NULL > Test$"A" [1] 1...

On Tue, Apr 13, 2010 at 4:58 PM, li li <hannah.hlx at gmail.com> wrote: > Hi all, > ? I know the operator %*% can do matrix multiplication. Is there a function > in R that can raise a matrix to a...

Hi All, I think i'm failing to undersatnd how aggregate() is supposed to work. example: test1<-sample(c(0,1),100,replace=T) test2<-sample(letters,100,replace=T) aggregate(test1,list(test2),sum) Error in data.frame(w...

Hi all, I have a time series which contain data collected weekly from week 26 to week 25 the following year. How do I plot this data, so that the x-axis is displaying the week numbers, ordered as in...

On Wed, Oct 29, 2008 at 2:47 PM, Leon Yee <yee.leon at gmail.com> wrote: > Dear all, > > How can I get the duplicated elements from a vector? For example, > x <- c("yes", "no", "yes", "yes", "no", "not sure...

Hi all, The recent change in 2.11 that made as.numeric() return false on difftime-objects broke some of my code that calculated age classes of individuals using cut(). While this was no big thing to fix for me...