similar to: add-on packages

I want to read data from a number of files into R. Reading individual files one by one requires writing enormous amount of code that will look something like the following. **************** maptools:::dbf.read("wb-01vc.dbf")->dist1 maptools:::dbf.read("wb-02vc.dbf")->dist2 maptools:::dbf.read("wb-03vc.dbf")->dist3

In perl DBI, there is a method for preparing sql commands with wildcards and then executing them with parameter bindings. Is there a way to do this within RMySQL? I would like to be able to look up values in a table based on a key supplied from R. Thanks, Sean

Hi!! I want some help to install the RMySQL package. I've tried to configure some things but i'm still getting erros. Anybody could help me?? Thank's Talita Perciano Costa Leite Graduanda em Ci??ncia da Computa????o Universidade Federal de Alagoas - UFAL Departamento de Tecnologia da Informa????o - TCI Constru????o de Conhecimento por Agrupamento de Dados - CoCADa

This seems like a bug to me. Can someone verify this? First we define a function f that returns its second argument and lapply it to 1:2 using 9 as the second argument and all seems well. Note that "{" as a function does the same thing as f, as illustrated with f(1,9) and "{"(1,9); however, when we attempt to use "{" in the very same way we used f in lapply,

I have been struggling with this problem for a while and I hope someone could help me. Or if someone could point me to a section in the manual I would be grateful. x <- "my" plot(1:10, main=expression(paste( x, Delta, "values" ))) Q : How do I get the title to say "my (triangle symbol) values" ? The following trial-and-error produced mainly errors :

Hi, hres <- hclust(smatr,method="single") hresd<-as.dendrogram(hres) as.dendrogram(hres) `dendrogram' with 2 branches and 380 members total, at height 2514.513 plot(hresd,leaflab="none") #<-error here. #the plotted dendrogram is incomplete. The x axis is not drawn. #The interested reader can download the save(hresd,file="hres.rda") #from the

Hi, Executing the following code causes the prompt to enter browser() mode. >dd<-as(Npatrick1,"list") Called from: as(Npatrick1, "list") Browse[1]> R : Copyright 2004, The R Foundation for Statistical Computing Version 2.0.0 beta (2004-09-20), ISBN 3-900051-07-0 Some addtitional info about Npatrick1 > is(Npatrick1) [1] "Massvectorlist"

Hi, I clustered a distance matrix and would like to draw it using plot.hclust or plot.dendrogram. The dendrogram is not informative because I have a few extremely small dissimilarities in the distance matrix (e.g. 0), but most of the other distances are in the range 1e10+-5000. I would like to show the tree only for the height of 1e10+-5000 but unfortunately their are no parameter like

Hi, Is the ordering of the values returned something on what I can rely on, a form of a standard, that a function called unique in R (in futher versions) will return the uniq elements in order of they first occurcence. > x<-c(2,2,1,2) > unique(x) [1] 2 1 Its seems not to be the standard. E.g. matlab >> x=[2,2,1,2] x = 2 2 1 2 >> unique(x) ans =

Hi, Please consider the following trivial example. In the sample code I first define a class MVCa using composition. This class contains a slot of type list. Next I define an inheritance relation using the function setIs -> MVCa "is a" list. Then I define a function printlength which prints the list-length which is defined for the type "list". If I call this function

Hi, I want to draw a scatter plot with 1M and more points and save it as pdf. This makes the pdf file large. So i tried to save the file first as png and than convert it to pdf. This looks OK if printed but if viewed e.g. with acrobat as document figure the quality is bad. Anyone knows a way to reduce the size but keep the quality? /E -- Dipl. bio-chem. Witold Eryk Wolski MPI-Moleculare

Hi, I am trying to write an article for the Rnewsletter, but keep getting errors. I have googled around for some decent examples that contain figures, maths, etc but with no joy. Would any be so kind as to send me an example article in latex code? Cheers, Sam.

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 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.

Hi this is a very simple question ! if a have a set of date like x=c(1,2,3,4,4,5,6,8,7,8,8) how can I find out the percentile of 7 ? thanks Paolo

Hello there, My name is Lisa and I'm doing analysis using genelized linear model-GEE model because I have some repeated measurements on the same patients (in a bilateral eye disease case). It would be very appreciated if you could shed some light on what function to use in R. Thank you very much Lisa Wang Msc. Toronto,Ca

Can somebody remember me which is the command to erase columns from a data frame? Thanks Michele ___________________________________ http://it.seriea.fantasysports.yahoo.com/

Hi all; Just to ask you for your advise about what is the best way to get the best quality for graphics to be incorporated into a printed article (I'm mainly a Linux useR, but also use the windows R version) Thanks and best regards, Javier Garcia

Hi, I'm just getting started with R and I'm having problems with some simple operations: I want to get the the sum of the column "SStot" for each year using the function by. The data set is named "SS". I've tried this: by (SS, year, sum(SStot)) and it's not working. Is it because there's a different number of rows for each year? How else can I do

Hey everyone, I have been looking for a while for ways to integrate R's wonderful functions into my C++ software, but I have not found anything concrete. So finally, i post to this list to see if anyouse else knows about this, or has done it!? Is it possible? Are there C++ or C R libraries? Or is it sufficiently easy to build them? your help is much appreciated! thanks doktora