similar to: slots of type "double"

Hi How do I specify an S4 class with a slot that is potentially numeric, but NA by default? I want the slot to be NA until I calculate its value (an expensive operation, not needed for all applications). When its value is known, I will create a new object with the correct value inserted in the slot. I want "NA" to signify "not known". My attempt fails because

I am using C code to create an S4 object based on Douglas Bates's example in his lecture notes on <http://www.ci.tuwien.ac.at/Conferences/DSC-2003/Tutorials/RExtensions/slide s.pdf> http://www.ci.tuwien.ac.at/Conferences/DSC-2003/Tutorials/RExtensions/slides .pdf e.g. SEXP La_DGE_dc(SEXP A) { SEXP aa = PROTECT(duplicate(A)); SEXP adims, pivot, val; int

Hello, I have a question concerning "setClassUnion". I'm working with R 2.0.0 Patched (2004-10-06) on windows 2000. I tried to use "setClassUnion" in a package I am currently working on. The situation is similar to the following example: The DESCRIPTION file has entries: Depends: R (>= 2.0.0), methods Imports: methods LazyLoad: yes The NAMESPACE file has

Hello, I have a question concerning "setClassUnion". I'm working with R 2.0.0 Patched (2004-10-06) on windows 2000. I tried to use "setClassUnion" in a package I am currently working on. The situation is similar to the following example: The DESCRIPTION file has entries: Depends: R (>= 2.0.0), methods Imports: methods LazyLoad: yes The NAMESPACE file has

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, Besides the problem with using "names," one has a similar problem using ".Data" together with "VIRTUAL." Consider the top of p. 295 of the green book. This should work (I had to change "structure" to "junk" because "structure" is a sealed class definition): setClass("junk",

I've recently updated from an early February version of 1.7.0 to Version 1.7.0 Under development (unstable) (2003-03-25) and am now having problems with errors giving the message: ' getExtends(ClassDef) : @ must be used on an object with a formal class' which seems to be caused by 'setIs("character","character or NULL")' which attempts to define

Full_Name: Reinhold Bader Version: 2.1.0 OS: SLES 9 Submission from: (NULL) (129.187.48.1) I tried to build R using the Intel compilers (icc, ifort) and the Math Kernel Libraries for BLAS/LAPACK Optimizations used were -O3, and the FPICFLAGS="-fpic" was exported. The build failed with the following error message: ... dumping R code in package 'methods' Saving namespace image

I've fixed this and will commit soon. Disregard my dim<-() example; that behaves as expected (the class needs a dim<-() method). Michael On Tue, Jun 6, 2017 at 5:16 AM, Michael Lawrence <michafla at gene.com> wrote: > Thanks for the report. The issue is that one cannot set special attributes > like names, dim, dimnames, etc on S4 objects. I was aready working on this >

Hi, It's nice to be able to define S4 classes with slots that correspond to standard attributes: setClass("A1", slots=c(names="character")) setClass("A2", slots=c(dim="integer")) setClass("A3", slots=c(dimnames="list")) By doing this, one gets a few methods for free: a1 <- new("A1", names=letters[1:3])

On 03/19/2016 01:22 AM, Michael Lawrence wrote: > > > On Sat, Mar 19, 2016 at 12:10 AM, Herv? Pag?s <hpages at fredhutch.org > <mailto:hpages at fredhutch.org>> wrote: > > On 03/18/2016 03:28 PM, Michael Lawrence wrote: > > > On Fri, Mar 18, 2016 at 2:53 PM, Herv? Pag?s > <hpages at fredhutch.org <mailto:hpages at

On 03/18/2016 03:28 PM, Michael Lawrence wrote: > > On Fri, Mar 18, 2016 at 2:53 PM, Herv? Pag?s <hpages at fredhutch.org > <mailto:hpages at fredhutch.org>> wrote: > > Hi, > > Short story > ----------- > > setClassUnion("ArrayLike", "array") > > showClass("ArrayLike") # no slot > >

Hello, I was just reminded from a comment in some code that I had submitted this bug report last year, but it does not appear to have been addressed in R 3.5.0. Can this please be fixed, or is there a specific reason that it cannot be addressed? Thanks, Adam From: Gower, Adam Sent: Monday, June 19, 2017 11:56 AM To: 'r-devel at r-project.org' Subject: Bug report for sealClass() in

Dear R-users, I have very recently started learning about object-oriented programming in R. I am far from being an expert in programming, although I do have an elementary C++ background. Please take a look at these lines of code. > some.data = data.frame(V1 = 1:5, V2 = 6:10) ; > p.plot = ggplot(data=some.data,aes(x=V1, y=V2)) ; > class(p.plot) ; > [1] "ggplot" My

Hi, Short story ----------- setClassUnion("ArrayLike", "array") showClass("ArrayLike") # no slot setClass("MyArrayLikeConcreteSubclass", contains="ArrayLike", representation(stuff="ANY") ) showClass("MyArrayLikeConcreteSubclass") # 2 slots!! That doesn't seem right. Long story ----------

Hi, Here is a problem we see with the Mac and Windows binaries of rJava (0.9-3) currently available on CRAN for R-devel (i.e. under bin/macosx/leopard/contrib/2.16/ and bin/windows/contrib/2.16/): > library(rJava) > .jinit("gaggle/inst/jars/gaggleRShell.jar") Error in .Call("R_do_new_object", ClassDef, PACKAGE = "base") :

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

Dear community, has anyone managed to get SSOAP working with the ChemSpider Web APIs, using functions which need the security token? I use SSOAP 0.9-0 from the OmegaHat repository. In the example code from SSOAP there is a sample which uses a token function. Interestingly, it checks if(!is.character(token)) first (and proceeds if the token is NOT character.) I can't test that function since I

>>>>> 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,

Hi, I'm working with Version 1.9.0 (2004-04-12) on Windows 98/NT/2000 where I found the following wrong (?) behavior of setValidity(). I already mentioned this on the R-help list (2004-06-11, was "setValidity changes Extends?") , but as I got no answer I tried to figure out what's happening. Well, setValidity() behaves not as I would expect (something about the