similar to: [Q] Package NS Hook Lint NOTE

Hi R-devels, in "Writing R extensions" as well as in the help to .onAttach(), you mention that one could use this function to issue a start-up message/banner for the package. My little wish for Easter: a 'quietly'-type argument for .onAttach() / .First.lib() which is passed through by functions require() and library() respectively, and by means of which one could optionally

Hi, I am facing with a strange behaviour of isClass and extends when these are called in .onLoad in both R 2.12.1 and R 2.13.0. This is preventing my package from doing some object initializations at a proper place (i.e. in .onLoad). Suppose one defines two S4 classes in a package, and that one needs to check the inheritance between these two when loading the package (e.g. to validate slots

From: Prof Brian Ripley > > On Thu, 13 Apr 2006, Peter Ruckdeschel wrote: > > > Hi R-devels, > > > > in "Writing R extensions" as well as in the help > > to .onAttach(), you mention that one could > > use this function to issue a start-up message/banner > > for the package. > > > > My little wish for Easter: > > > > a

As I was running "R CMD check" on one of my older packages (matlab), I was attempting to fix one of the NOTEs which bitches about attempting to change the search path using require(). In my case, I am repeating a package dependency for "methods" package in my .onLoad() function. Can this scenario (based on something B. Ripley discussed many years ago) no longer occur? Just

Dear all, My apologies for re-posting this question, but I have not found any solution to my problem so far. I also think that my post may have been overseen due to the posting time and high traffic on this list. I experience a problem in implementing a S4 class in a package and would appreciate your help in this matter. The class is implemented using Rcpp, which works well. I then extend

for the moment, I'm using: .onAttach <- function(libname, pkgname) { .bbg.db.conn <<- dbConnect(dbDriver("PostgreSQL"), user="blah","blah") } .onUnload <- function(libpath) { dbDisconnect(.bbg.db.conn) } which results in a hidden global variable in the global environment. I would prefer to make the assignment only in the package namespace.

G'day all, After reading through "Writing R Extensions", Version 2.1.1 (2005-06-20), I thought the the following points might need clarifications or corrections. (I checked that these comments also hold for "Writing R Extensions", Version 2.2.0.) 1) When I ran "package.skeleton" recently, I noticed that the DESCRIPTION file and an entry `type'. This

Dear all, My gRbase package imports functionality from the bioconductor packages graph, Rgraphviz and RBGL. To make installation of gRbase easy, I would like to have these bioconductor packages installed in connection with installation of gRbase, but to do so the user must use setRepositories() to make sure that R also installs packages from bioconductor. Having to call setRepositories causes

I am getting the error message: > library(Rcmdr) Loading required package: car Loading required package: MASS Loading required package: nnet Error : .onAttach failed in attachNamespace() for 'Rcmdr', details: call: structure(.External("dotTclObjv", objv, PACKAGE = "tcltk"), class = "tclObj") error: [tcl] invalid command name "image".

Hello, (Dear Richard, I hope you don't mind being Cc:'d on this thread in R-devel. This is one of the ways we can prevent similar problems from happening in the future.) Sometimes, package authors who use both exportPattern('.') and utils::globalVariables(...) get confusing WARNINGs about undocumented exports: https://stat.ethz.ch/pipermail/r-package-devel/2024q1/010531.html I

Dear all, I experience a problem in implementing a S4 class in a package and would appreciate your help in this matter. The class is implemented using Rcpp, which works well. I then extend the class with R functions, adding them as methods with a call to setMethod(...). When I do this outside the package (after loading the package with "library(...)"), everything works smoothly.

> Packages without explicit ?NAMESPACE? files will have a default one created at build or INSTALL time, > so all packages will have namespaces. A consequence of this is that ?.First.lib? functions need to be > renamed, usually as ?.onLoad? but sometimes as ?.onAttach?. Couldn't R simply regard .First.lib as the appropriate function to save many packages from being needlessly changed?

Hi, I'm developing a package whose API is only meant to be used in other packages via imports or pkg::foo(). There should be no need to attach this package so that its API appears on the search() path. As a maintainer, I want to avoid having it appear in search() conflicts by mistake. This means that, for instance, other packages should declare this package under 'Imports' or

I have two packages, one that does the actual work (SC) and the other a Tcl/Tk UI (SCUI) that invokes methods within the former. Within the SCUI's invocation method, I save an object returned from SC, the results of a long-running method. Now the object is completely described by the SC package. Unfortunately, any attempt to load the object (in a fresh R session) fails as below. R>

Documentation on how to put classes and methods in packages with namespace? How should I define my classes and methods in "dynamicGraph"??? (That is - Can some one point me to the documentation on how to put classes and methods in packages with a namespace? ) Currently it is done by the code below. This gives problems, when a workspace with a "dynmaicGraph" is

I'm currently working on a new package for R that interfaces with an API. Most of the package's functionality requires users to supply an access key that allows the package to work with the API. I want to display text immediately upon loading the package that instructs/reminds users to enter their access key before attempting to do anything (as the package won't really work without

Wenn man ihn mal braucht ist er tot. folgende Fehlermeldung ereilt mich seit heute beim starten des R Commander auf dem Mac: > library(Rcmdr) Lade n?tiges Paket: car Lade n?tiges Paket: MASS Lade n?tiges Paket: nnet Error : .onAttach in attachNamespace() f?r 'Rcmdr' fehlgeschlagen, Details: ? Aufruf: structure(.External(.C_dotTclObjv, objv), class = "tclObj") ? Fehler: [tcl]

Hi, I installed "circular" package and I wanted to load it automatically when R starts up, so I added the following lines in file Rprofile.site, .First <- function() library(circular) When R starts up, it gives me the following error: ---------- Loading required package: boot Loading required package: graphics Loading required package: stats Error : .onAttach failed in

Dear developeRs, I have a package, pls, that implements package options. The users are supposed to use a function pls.options() to manipulate them. If a user changes the options, they are stored in .GlobalEnv. I was recently informed that this is against current CRAN submission policies, so I need to change that. I have looked at several different packages that implement package options, and

After building and installing R-devel from 21/07/2011 on FreeBSD 9.0-CURRENT (amd64), starting R gives the following warning: [..snip..] Beim Start - Warnmeldung: package 'datasets' in options("defaultPackages") was not found This happens with all versions after 14/07/2011. I think it is related to NEWS Sat, 16 Jul 2011 CHANGES IN R-devel PACKAGE INSTALLATION Packages without