similar to: as(obj,"matrix")

Hello! as(object,"list") and as(object,"matrix") behave quite differently if it comes to their attributes. I define two classes. One of them "contains" a "list" the other a "matrix" setClass("myclass" ,representation(info="character") ,contains="matrix" ) setClass("mylist"

Suggest you try R 1.9.1 patched. This is what I get on Windows XP with that: > matrixObj <- array(1:4, c(2,2)) > class(matrixObj) <- "matrix" > fooObj <- matrixObj > class(fooObj) <- "foo" > fooObj[1:2] [1] 1 2 > matrixObj[1:2] [1] 1 2 > getAnywhere("[.matrix") no object named '[.matrix' was found >

Hi all, in the help for RClassUtils I found the expression "privileged slots" in function "checkSlotAssignment" with the explanation: /privileged slots (those that can only be set by accesor functions defined along with the class itself)/ I thought all slots of a (not private) class can be a accessed by a user via the @ Operator. Is there a way to make a single slot of a

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 used to use "<<-" to do assignment inside a class method, and just found that now it is broken in R 2.0. For example, the following code ----------------------------------------------------------------------- setClass( "myclass", representation(x="numeric") ) setGeneric("incrXByOne", function(obj) standardGeneric("incrXByOne"))

Hi! I guess that it cant work. but maybee I am wrong. I would like to define a function rbind. > rbind function (..., deparse.level = 1) { which works only for objects of class Myclass Is it possible to use something like setMethod("rbind",signature(...="Myclass",deparse.level="numeric") This gives an error. Or should I use rbind.Myclass Eryk. Dipl. bio-chem.

Hi! I have implemented class specific behaviour of "[[<-.myclass"<-function(). How it is posible to call the "[[.default" on an object of myclass? Eryk Dipl. bio-chem. Eryk Witold Wolski @ MPI-MG Dep. Vertebrate Genomics Ihnestrasse 73 14195 Berlin 'v' tel: 0049-30-84131285 / \ mail: wolski@molgen.mpg.de ---W-W----

Hi! Trying to reproduce some examples from "Programming with Data" page 341. Can not reproduce it neither on R1.8.1. nor R1.9.0devel? library(methods) setClass("track",representation(x="numeric",y="numeric")) setMethod("[" ,"track" ,function(x,...,drop=T){ track(x at x[...],y at y[...]) }

I noticed this oddity about [ and setMethod. First, I define testFunc, which sorts a data frame by the first column and returns the entries that aren't NAs, and testIt, which runs testFunc repeatedly on a random large data frame, each time saving the return into a dummy placeholder (for demonstration's sake). > require(methods) Loading required package: methods [1] TRUE > testFunc

I noticed this oddity about [ and setMethod. First, I define testFunc, which sorts a data frame by the first column and returns the entries that aren't NAs, and testIt, which runs testFunc repeatedly on a random large data frame, each time saving the return into a dummy placeholder (for demonstration's sake). > require(methods) Loading required package: methods [1] TRUE > testFunc

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

I'm trying to write a package which uses classes/methods as defined in the `methods' package. I have a single .R file which defines the class and various methods for that class. At the top of the file I have require(methods) and then setClass("myclass", ...) setGeneric("intersect") setMethod("intersect", "myclass", function(x,y) ...) I noticed

Dear, I'm looking for some examples on OO programming in R. I have the programming manual with explanation on UseMethod and NextMethod but I miss some practical examples to get me going (I hope). I searched the web but could not find a good independent tutorial on this. Any suggestions are welcome, Kris -- ------------------------------------------------------------------------

Hello, I have defined a new class > setClass("myclass", representation(min = "numeric", max = "numeric")) and want to write accessor functions, so that for > foo = new("myclass", min = 0, max = 1) > min(foo) # prints 0 > max(foo) # prints 1 At first i created a generic function for "min" > setGeneric("min",

Hi, I have been using R for a few months now and I am confident that the language has everything I will need to complete my PhD. I can create functions, script files and packages, but I would like to write my programs more efficiently (maybe using OO). Can anyone recommend a good book on the "art" of good R programming? Kind Regards, Sam.

Hi! I am installing R in non standard directory. ./configure --prefix=/non/standard/directory The installation works fine. But after starting R i get .libPaths() /usr/lib/R/library but they cant be there of course! Have I to set some additional switches during config? Eryk Dipl. bio-chem. Eryk Witold Wolski @ MPI-Moleculare Genetic Ihnestrasse 63-73 14195 Berlin 'v' tel:

hello I am returning to some libraries that I had previously customised by amongst other things adding additional functions. I had simply typed these new functions into the file in library/R/thelibrary. These however do not seem to be loaded now as they previously were under older versions of R. What's changed and what do i need to do? Thanks Stephen

Hi! >library(cluster) In this lib a function called silhoutte.default is defined than on the R prompt it type >silhouette.default Error: Object "silhouette.default" not found R1.9.0 The same error are at R1.8.1 And I knew that a function silhoutte.default are present. But the same piece of code works in R1.6.2 ??? Eryk Dipl. bio-chem. Eryk Witold Wolski @

I do lots of analyses on large microarray data sets so memory use and speed and both important issues for me. I have been trying to estimate the overheads associated with using formal S4 data objects instead of ordinary lists for large data objects. In some simple experiments (using R 1.7.1 in Windows 2000) with large but simple objects it seems that giving a data object a formal class

Hi! I have installed the new R on windows. I wanted to reinstall the XML package. I am not able to find the XML.zip anymore. I am quite shure that they where a windows binary version. Has anyone old XML windows binary? Eryk Dipl. bio-chem. Eryk Witold Wolski @ MPI-MG Dep. Vertebrate Genomics Ihnestrasse 73 14195 Berlin 'v' tel: 0049-30-84131285 / \ mail: