similar to: Same class name, different package

Dear all, In R-devel I have noticed the new approach for the "ts" class in the package "methods". the "structure" behaviour of "ts" is not always kept when one uses "ts" objects and objects of classes which extend the virtual class "structure". As a short example: ## this works fine setClass("foo", representation(header =

The package I'm working on can extract data from external packages but would otherwise have no dependency on them. However, I desire to be able to dispatch based on an external S3 class if its package is attached (.First.lib). My code is S4-based and its package has NAMESPACE. Registering the external class prior to the other package being attached doesn't seem to work so I am attempting

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")

One of the changes some packages are noticing from the recent modifications to methods is warnings of "undefined classes" during installation when the package extends S3 classes or uses them as slots UNLESSS they have been declared in a setOldClass() call. The green book "strongly recommends" declaring S3 classs this way (pp 449-451). The warnings on undeclared classes

Hi, I am using two packages (quantmod and FRAPO) Quantmod and FRAPO both have a class names "zoo" R is displaying the following warning when I manipulate an object of class zoo: Found more than one class "zoo" in cache; using the first, from namespace 'quantmod' Also defined by ?FRAPO? The warning is displayed every time I manipulate a zoo object and becomes pretty

Hi, The man page for new() suggests that if 'a' is an object with slots "slot1" and "slot2" and C is a class that extends the class of 'a', then the 2 following calls should be equivalent: new("C", a, ...) new("C", slot1=a at slot1, slot2=a at slot2, ...) This is generally the case but I just ran into a situation where it's not.

Thanks Martin for looking into this. H. On 05/13/2015 03:57 AM, Martin Maechler wrote: >>>>>> Herv? Pag?s <hpages at fredhutch.org> >>>>>> on Tue, 12 May 2015 15:18:42 -0700 writes: > >> Hi, > >> The man page for new() suggests that if 'a' is an object with slots >> "slot1" and "slot2" and C is a

Hi, I'm trying to make a new S4 object with a slot for a "link-glm" object. R doesn't like me have a slot of class "link-glm" > class(make.link("probit")) [1] "link-glm" > setClass("a",representation(item="link-glm")) [1] "a" Warning message: undefined slot classes in definition of "a": item(class

Hello, I am writing an interface to some functions from the CRAN package pamr, which is poorly written. I have a S4 method I declared with setMethod. I'd like to provide a signature of "pamrtrained" which is the class of object that training creates. The last two lines of code of pamr.train are : class(junk) = "pamrtrained" junk How can I dispatch on these kinds

On 2/13/2018 11:47 PM, Ayhan yuksel wrote: > Hi, > > I am using two packages (quantmod and FRAPO) > > Quantmod and FRAPO both have a class names "zoo" > > R is displaying the following warning when I manipulate an object of class > zoo: > > Found more than one class "zoo" in cache; using the first, from namespace > 'quantmod' >

Bug fix: A bug introduced in version 1.6 failed to "initialize" some old-style (aka "S3") classes, producing possible warning messages if those classes were used in the signature of a method in the methods package. The real bug, though, was that old-style inheritance could not be included, until the setOldClass function was provided. Initializing the methods package now

is() does not catch parent S3 classes: > library(splines) > temp <- bs(1:99, df=5) > class(temp) [1] "bs" "basis" > is(temp, "basis") [1] FALSE In contrast, is() does catch parent S4 classes: > library(copula) > norm.cop <- ellipCopula("normal", param = c(0.5, 0.6, 0.7), + dim = 3, dispstr = "un")

A general goal for the next version of R is to make S4 and S3 play better together. As mentioned in a previous thread, one limitation has been that S3 generic functions, specifically the UseMethod() call, did not make use of S4 inheritance when dispatching on general S4 objects. This has been fixed in a version committed today (updated to rev 52267). The code change is not large, but it

Hi Martin, Thankyou for your response. I suspect that we're not going to agree on the main point. Making it trivially simple (as say Java) to set slots to NULL. So, I'll move on to the other points here. ***Note that cited text uses excerpts only.*** > setClassUnion("character_OR_NULL", c("character", "NULL")) > A = setClass("A", slots =

Hi, Is there any official way to determine the colClasses of a data.frame? Why has POSIXct such a strange class structure? Why is colClasses "ordered" not allowed (and doesn't work)? Background ========== I am writing a chunked csv reader that provides the functionality of read.table for large files (in the next version of package ff). In chunked reading, one wants to learn the

Hello, I've got a DESCRIPTION file with a the first line: Package: Repitools But, when I run R CMD INSTALL Repitools I get: * installing *source* package Repitools ... ** R ** data ** inst ** preparing package for lazy loading Warning in FUN(X[[1L]], ...) : Created a package name, "2011-04-20 09:05:40", when none found ** help *** installing help indices ** building package

I'm trying to create a package for working on orientation data, i.e. data where the observations are 3D rotations. There are several different representations of orientations in common use: SO(3) matrices, Euler angles, unit quaternions, etc. One thing I'd like is to make it convenient to work in any representation, and have conversions to others done as needed. I'm trying to do

Hi! Consider this code. setClass("Ctest" ,representation( test="character" ,bla="character" ,mod="lm" ) ) new("Ctest",test="bla") #This produces an error. #Error in validObject(.Object) : Invalid "Ctest" object: Invalid object for slot "mod" in class "Ctest": got class

>>>>> Joshua Wiley <jwiley.psych at gmail.com> >>>>> on Thu, 8 Oct 2015 12:19:16 +1100 writes: > Hi, I realize this is an old thread, but just wondering > whether a conclusion was ever reached on this issue? I'm > using formula(NULL) but it would be nice if default > initialization worked for formula classes as well. Well,

Dear all, Today I got this error message (R 3.6.1) when installing my package: Error: package or namespace load failed for ?inlatools? in namespaceExport(ns, exports): undefined exports: .__C__inla My package was using setOldClass("inla") and exported the "inla" class via the NAMESPACE. It imports functions from the INLA package. Older versions of the INLA package did not