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I was at a lecture the other day and I saw a presentation of very neat (short) animation modeling epidemic disease spread over a map region. When I ask what software they used they mentioned SAS. Do you know if there are equivalent resources in R to model the spread of disease with animation output? My search in R-help and google didn't lead to any document (though I found a couple of

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Hi wizards, I have a question. Which programming paradigm does R handle? . Iam looking for this information but I didn't found nothing. Thanks in advance. personal web site: http://www.geocities.com/ricardo_rios_sv/index.html -- personal web site: http://www.geocities.com/ricardo_rios_sv/index.html

Hello, I discussed the following problem on the great useR conference with several people and wonder if someone of you knows a more elegant (or more common ?) solution than the one below. The problem: ============ I have several sets of interrelated functions which should be compared. The functions themselves have different structure, application-specific names (for readability) and they should

hi again, i still cannot open the file in spss :( i type: library(foreign) read.spss("H:\\Desktop\\bd1\\experiencia1") and the error comes: Error in read.spss("H:\\Desktop\\bd1\\experiencia1") : unable to open file can you help me? margarida,portugal

Hello, I have an unbalanced mixed model design with two fixed effects "site" (2 levels) and "timeOfDay" (4 levels) and two random effects "day" (3 consecutive days) and "trap" (6 unique traps, 3 per site). The dependent variable is the body length ("BL") of insect larvae from 7 to 29 individuals per trap (104 individuals in total). To account

Dear expeRts, there is obviously a general trend to use model comparisons, LRT and AIC instead of Wald-test-based significance, at least in the R community. I personally like this approach. And, when using LME's, it seems to be the preferred way (concluded from postings of Brian Ripley and Douglas Bates' article in R-News 5(2005)1), esp. because of problems with the d.f. approximation.

Hi, how it's possible to extract the year and the number of days from Julian date. i'm little confused about the last two functions and ?years . EDATE comes from sqlQuery with as.is=T EDATE <- as.POSIXlt(datvears$ENROLLDAY) Many thanks, Christian > EDATE[1:5] [1] "2000-06-30 11:25:01" "2000-06-30 11:39:55" "2000-06-30 12:11:11" [4]

...> SPSS12. At the moment I have no dataset where I know exactly this was stored > using a SPSS version below 12. > > Raphael > > > > ------------------------------ > > Message: 110 > Date: Fri, 27 Aug 2004 09:53:00 +0200 > From: Thomas Petzoldt <thpe at hhbio.wasser.tu-dresden.de> > Subject: Re: [R] text() with text, variables and math HOWTO? > To: Johannes Graumann <graumann at its.caltech.edu> > Cc: r-help at stat.math.ethz.ch > Message-ID: <412EE85C.9020009 at hhbio.wasser.tu-dresden.de> > Content-Type: text/plain; chars...

Dear R users, I'm trying to do some sort of "floodfill" or "seedfill" with data stored within a matrix in R (usually floating numbers), where a marker value is given to specify the limits of an area to be filled. A reduced example may demonstrate this below. Although I wrote a simple C function for this, it would be very helpful to find a more professional solution.

Hello, we want to identify breakpoints (different phases) in environmental data, algae cell counts of three years with intervals between 7 and 30 days (N=40). We found that breakpoints(cells ~1) works great and identifies 5 very good breaks, however we are uncertain about these, because the data are unequally spaced. Is there a way to include the information about the measurement intervals,

Hello, I try to document some R scripts for my collegues and observed the problem, that Sweave strips comment lines away. As a small example I write in an Rtex file: \begin{Scode} ## a small example test() # line comment \end{Scode} ... the .tex file generated by Sweave only contains: \begin{Schunk} \begin{Sinput} test() \end{Sinput} \end{Schunk} ... and all the comments are lost.

Hello, I have problems using lattice graphics together with Sweave under Windows XP and R 2.0.0; 2.0.1 Patched; 2.1.0 devel respectively. Base graphics are o.k., but for lattice graphics empty files (.eps and .pdf) are generated. The only workaround I found was to write and read the respective figures explicitely using postscript() and includegraphics{}. Have I missed something to solve this

Hello, I try to document some R scripts for my collegues and observed the problem, that Sweave strips comment lines away. As a small example I write in an Rtex file: \begin{Scode} ## a small example test() # line comment \end{Scode} ... the .tex file generated by Sweave only contains: \begin{Schunk} \begin{Sinput} test() \end{Sinput} \end{Schunk} ... and all the comments are lost.

Hello, I installed R 2.0.0/Windows on our network server (Win NT 4.0) with all CRAN packages and observed a quick startup on this machine (3s). However, when startet from different client machines (e.g. Win NT 4.0 or Win XP Pro SP2, Athlon XP 1700, 100 Mbit Network) the R Gui Window appears immediately but then it takes 90 seconds to get the startup message and the command prompt. The R

Hello, I want to call a function "fx" given by name, where some "global" variables (in the environment of fx) are passed to the function. For compatibility reasons I cannot modify the parameter list of fx and I want to avoid setting variables in the global environment (e.g. via <<-) Is there a way, how to do this? Thomas P. The example: fx <- function(y)