similar to: S4 dispatch for .DollarNames (utils)

Hi all, In a function, I need to get the name of a variable that has been used to call the function. For example, I want: --- 8< ------ toto <- 3 fun <- function(y){ nameOfY <-deparse(substitute(y)) cat("name is ",nameOfY) } fun(toto) # [1] name is toto --- 8< ---- But deparse(substitute(y)) does not work all the time, especially when we use generic function.

Hello, Below is what I got running the examples from `setClass'. Could somebody please help explain why the last `setIs' call is returning the warning and whether this is expected? R> setClass("track", + representation(x="numeric", y="numeric")) [1] "track" R> setClass("trackCurve", +

Hello, I often find myself writing code like : if( require( "foo" ) && compareVersion( packageDescription( "foo")[["Version"]], "2.1" ) < 0 ){ # code that uses version 2.1 of foo } else { stop( "could not load version >= 2.1 of foo" ) } Would it make sense to include something like this in require, library, etc ... require(

We have seen problems with a number of packages which use R/Rscript to run R code in configure or makefiles. (a) You must give a full path: there need be no version of R in the path, and if there is it might not be the version/build of R under which package installation is being done. So the general form is to use ${R_HOME}/bin/R to select the right version. And since ${R_HOME} might

Hey everyone, I would like to develop a package using S4 classes. I have to define several S4 classes that inherits from each others as follow: # A <- B <- C <- D I also would like to define .DollarNames methods for these class so, if I have understood well, I also have to define an old class as follow: # AOld <- A <- B <- C <- D setOldClass(Classes = "AOld")

Hi, I just stumbled on the following apparent oddity: the package "datasets" does not appear to export anything out of its namespace: > ns_datasets <- getNamespace('datasets') > getNamespaceExports(ns_datasets) character(0) Not the case with other packages (example here with "utils"): > ns_utils <- getNamespace('utils') >

Dear R users, Im trying to load *"xlsx"* package which depends on *"xlsxjars"* and * "rJava"* packages. All the 3 packages (zipped files) are installed successfully in windows. I have added "C:\Program Files\Java\jre1.6.0_03\bin\client" to the PATH variable to get rJava working. However, the following error message results after inputting

I agree, this is a good idea and would be very helpful in interactive contexts. I have a draft patch implementing this feature here: https://github.com/r-devel/r-svn/pull/122 (Append ?.patch? to the URL to get a raw patch.) Regards, Tomasz > On Mar 31, 2023, at 2:11 PM, Karolis K <karolis.koncevicius at gmail.com> wrote: > > Hello, > > In the current R-devel @ is S3

pkgA's NAMESPACE has importFrom(graphics, plot) exportClasses("A") exportMethods("plot") R/foo.R has setClass("A") setMethod("plot", "A", function(x, y, ...) {}) During R CMD INSTALL pkgA_1.0.tar.gz we are told ** preparing package for lazy loading Creating a generic function for 'plot' from package

Dear R People: I'm still struggling with sending methods and classes as part of creating a new package. Where does the .onLoad function go? Within R itself or in a file in one of the new package directories? Here are my latest efforts: Here's the last part of the woof1-Ex.Rout > library('woof1') Error in loadNamespace(package, c(which.lib.loc, lib.loc), keep.source =

Dear R People: Could someone recommend a good c/c++ code (or Fortran) for LU decomposition, please? Sorry to bother about this. I'm trying to do some "non-R" work that requires a matrix inversion. Thanks, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: erinm.hodgess at gmail.com

Loading an S4 object from a file without first loading the library sometimes (?, the example below and actual example involves a virtual base class and the show generic) leads to incorrect dispatch (to the base class method). The attached package reproduces the problem. It has setClass("A") setClass("B", contains="A") setMethod("show", "A",

Hello, In the current R-devel @ is S3 generic, so we can do things like - for example - use it to extract matrix rows by name: .S3method("@", "mm", function(object, name) object[name,]) m <- structure(matrix(rnorm(20), ncol=2), dimnames=list(paste0("row", 1:10), paste("col", 1:2)), class="mm") m at row1 However, seems like

Late to the show on this release, unfortunately. One of our production packages no longer builds under R-2.15.0 with the following message. ** testing if installed package can be loaded Error: Function found when exporting methods from the namespace 'SuperCurve' which is not S4 generic: 'image' Possibly relevant clues follow: ## From R/AllGenerics.R if

Hi, I'm hoping to get some clarification of the intent of some of directives used in NAMESPACE files. 1. Is import(somePkg) also intended to import all classes and methods that are exported via exportClasses and exportMethods in somePkg? I think import pulls in classes and methods, but it isn't clear from the docs whether this is as intended. 2. What is exportMethods intended

I have a question about what to do in the following situation (please bear with the setup): Package A defines an S4 generic 'foo' and as well as S4 methods for 'foo' and has exportMethods("foo") in its NAMESPACE file. Package B defines another method for 'foo' for class "bar" and has importFrom(A, "foo") exportMethods("foo")

Hello R-Team, May you help me to post a 'S4-creating Package Problem'? Thanks already now for supporting. The problem sounds like: Hello R forum, while compiling my R-package these 'Warnings' occur: ... Warnung in matchSignature(signature, fdef, where) : in the method signature for function "plot" no definition for class: "prediction" Warnung in

In > R.version.string [1] "R Under development (unstable) (2011-12-15 r57901)" PkgA promotes 'unique' to a generic and exports that DESCRIPTION: Imports: methods R/f.R: setGeneric("unique") NAMESPACE: export(unique) and PkgB creates and exports a method on unique DESCRIPTION Imports: methods, PkgA R/f.R: setClass("B",

parseNamespaceFile() doesn't seem to detect misspelled directives. Looking at its code I see switch(as.character(e[[1L]]), <lots of args omitted here>, stop(gettextf("unknown namespace directive: %s", deparse(e)), call. = FALSE, domain = NA)) but this doesn't seem to function as I expect, viz. to stop with an error if I type a wrong directive.

Dear listers, After activating the name space for my bioconductor package (prada) I successfully ran R CMD check. However when loading the package in R and running the examples the imported function brewer.pal from package RColorBrewer is not found. I can directly call brewer.pal from the RColorBrewer name space typing RColorBrewer::brewer.pal, but it is not imported into my prada name space. When