similar to: S4 methods and polymorophism

Displaying 20 results from an estimated 1000 matches similar to: "S4 methods and polymorophism"

2005 Jan 12
1
[survey] R for Reporting - the R Output MAnager (ROMA) project
Hi R UseRs, I am interested in providing Reporting abilities to R and have initiated a project called R Output MAnager (ROMA). My starting point was my R2HTML package which provides (rough) HTML exportations. I began with trying to mimic it for LaTeX but fastly did realize that it was a bad idea. Thus, I started again from scratch a new package and did spend a lot of time reading about this
2005 Jan 14
1
S3/S4 classes performance comparison
Hi R-devel, If you did read my survey on Rhelp about reporting, you may have seen that I am implementing a way to handle outputs for R (mainly target output destinations: xHTML and TeX). In fact: I does have something that works for basic objects, entirely done with S4 classes, with the results visible at: http://www.stat.ucl.ac.be/ROMA/sample.htm http://www.stat.ucl.ac.be/ROMA/sample.pdf To
2002 Jun 20
1
Argument visible of addTaskCallback
Hello, I have a question about addTaskCallback It is said that the argument visible allows to know wether the result of the top-level evaluation was printed or not. Nevertheless, in the following example, I encountered a problem, as it seems not all printed objects are visible... Could someone tell me where is the tip? TIA
2004 Nov 29
3
Differences between "$" and "[["
Hi, If I define the following list: > (l<-list("text-align"="right")) $"text-align" [1] "right" I know that I can't use l$text-align, as the parser will find a '-' operation. If I want (need) to use special names, as "text-align", I have to enclose it between "". So I can use: l$"text-align" or
2004 Nov 09
2
do.call invoking a function with multiple arguments
Hi users, I am not sure to understand the help page about do.call. -- do.call(what, args) args: a _list_ of arguments to the function call. The 'names' attribute of 'args' gives the argument names. -- If we take the following sample data: > (tab=as.data.frame(table(factor(1:10)))) Var1 Freq 1 1 1 2 2 1 3 3 1 4 4 1 5 5
2004 Nov 18
5
Lexical Scoping: eval(expr,envir=)
Hi R-listers, I am trying to better undertand what we would call "functional paradigm" use of S/R to better map my programming activities in other languages. This little function is aimed to create an object (at the end end, it would have it's own class): -- myObject =function(){ list( a=1, foo=function(b) { cat("b:",b)
2004 Jun 04
1
[Wish]: Add "..." argument to library function
Hello, I would find it very usefull to have the ability to load packages with options. Consider for example the SciViews package Philippe and me are working on. When loading on Windows, it automatically loads the associated GUI executable. It should be convenient to have an option not to load the exe but still have an access to the R functions of the package. For that, I think a simple change
2005 Jun 06
0
ROMA project (R Output MAnager) / Progress report / Call for contributors
Hello useRs, This email is about the ROMA project, the implementation in pure S of a reporting system for R. Several month ago, I did then send on R-help a survey on that (mainly: what features did you expect for a reporting system). During the following months, I did try different approaches for the core functionalities, ending now with a set of generic functions of which I am satisfied. More
2003 Feb 07
2
My remark on libraries
Hi R community, These days, I am writing some functions to work with 2-ways frequency tables ; you know all this tuff about measures of association: Chisq and derived (phi, cramer's v), tau b, tau c, somer's d and so on. So I consider all those functions could be gathered in a single R file, as they are coherent and dealing with the same problem / objective (analysis of crosstables).
2004 Oct 22
1
cor, cov, method "pairwise.complete.obs"
Hi UseRs, I don't want to die beeing idiot... I dont understand the different results between: cor() and cov2cov(cov()). See this little example: > x=matrix(c(0.5,0.2,0.3,0.1,0.4,NA,0.7,0.2,0.6,0.1,0.4,0.9),ncol=3) > cov2cor(cov(x,use="pairwise.complete.obs")) [,1] [,2] [,3] [1,] 1.0000000 0.4653400 -0.1159542 [2,] 0.4653400 1.0000000
2004 Jun 14
1
Copyright issues question
Hi to the Devel list, I am at present developping a little Excel add-in that would consist into a translation of John Fox RCommander package. The idea is to have R code that recreates within Excel the menus and some VBA part that handles data input and outputs (those beeing redirected to HTML and imported within Excel in a user-transparent way). Actualy, a first beyta version of this add-in
2005 Feb 18
3
Hosting a R Graph Gallery?
Dear R users, Following some of the recent questions and discussions about the R plotting abilities, it occurred to me again that it would be very valuable to have an R graph gallery. Eric Lecoutre made a very nice example in: http://www.stat.ucl.ac.be/ISpersonnel/lecoutre/stats/fichiers/_gallery.pdf It would be very useful to many beginners, but probably also advanced users of R, to have an
2007 Dec 19
3
Obtaining replicates numbers of a vector
Dear R-help, I am trying to have a generic way to assess the replicates in a character vector. Say that I have the following vector: x <- c('A','B','A','C','C','B') I would like to obtain: replicates <- c(1,1,2,1,2,2) each number beeing the time we see the corresponding value in x. Any clever and generic way to obtain that? Eric --
2002 Jun 13
2
Summary: recursion over list
Dear all, Some days ago, I asked to the list a way to recursively handle lists objects, so that on can apply a function only on terminal nodes. Thank you for all the answers. You will find here a little summary of answers with comments: - lapply allows the user to apply a function on all the items of a list, supposing this is a list with a unique depth (like:
2002 Aug 06
1
Using Tcl/Tk on Windows
Hello, I would like to try Tcl/Tk library on Windows. I installed ActiveTCL 8.3.4.3 and add the environment variable TCL_LIBRARY linking to the directory of installation. When I load the Tcl/Tk package, I have the following error: +--------------------------------------------------------------+ Error in firstlib(which.lib.loc, package) : Can't find a usable init.tcl in the
2002 Jun 10
1
Recursive function for lists
Hi to all R/S gurus, I am developping a library to export R/S objects to HTML (there was developments of this library past year, by myself and Mathieu Ros, but we never finished it). For that, I wrote HTML.* functions handled by the generic method HTML. At this step, allmost all objects exportations are possible: matrix, atomic, data.frame, functions and even plots... but I still don't
2004 Nov 24
1
Suggestions for packages / help / index (long mail)
Hi R-users and developers, This month may have seen one of the biggest thread never seen on R-related mailing lists, the one about "GPL software" and "hidden costs" (at this day, thread is still open - and active!). Lot's of mails in this thread are not really relevant to the original mail, send by Philippe Grosjean. Nevertheless, most of the mails are of interest and
2005 Apr 18
5
the graph gallery strikes back
Hello useRs and helpRs, Some time ago, in a gallaxy far away (here is the thread : http://finzi.psych.upenn.edu/R/Rhelp02a/archive/46532.html ) we discussed about a graph gallery showing the power of R in that domain. I did some work around that, and there is a (pretty advanced) draft here : http://addictedtor.free.fr/graphiques/displayGallery.php For instance, there are some of my graphs,
2007 May 18
1
How to extract R codes that embedded in a HTML file
> -------- Original Message -------- > Subject: Re: [R] How to extract R codes that embedded in a HTML file > using Stangle? > Date: Thu, 17 May 2007 17:01:30 +0000 > From: Tao Shi <shitao at hotmail.com> > To: ligges at statistik.uni-dortmund.de, lecoutre at stat.ucl.ac.be > CC: r-help at stat.math.ethz.ch > : <jmcconnell at
2004 Nov 09
0
Re: QTL interval mapping in outbred populations
On Mon, 8 Nov 2004 ssim at lic.co.nz wrote: > > Is there an add-on package in R for QTL interval mapping for outbred > population, eg. Haley-Knott regression method ? > > Stella I believe Karl Broman's R/QTL (http://biosun01.biostat.jhsph.edu/~kbroman/software/) and Brian Yandell's bim (http://www.stat.wisc.edu/~yandell/qtl/software/), Richard Mott's happyR