similar to: Bug: broken exception handling in S4 methods

Apologies for asking something that is probably super obvious, i just started with S4 classes and i guess i am not finding documentation that layout the grammar rules and give enough examples. Some questions i am having are these 1. I understand that main method of writing a member function is to write a generic function and setMethod for this particular object. This, however, presumes that there

Dear all, I am currently learning how to create R packages using C++ classes. For this purpose I have written a small package MyClass (which I try to attach since I do not have access to a website). MyClass has methods WriteFileC() and WriteFileCpp() which implement C-style and C++-style writing of a table to a file using FILE or ofstream respectively, and the corresponding R-functions

Dear developers: I have just came across an (unexpected to me) behaviour of lists when assigning NULLs to list elements. I understand that a NULL is a valid R object, thus assigning a NULL to a list element should yield exactly the same result as assigning any other object. So I was surprised when assigning a NULL in fact removed the element from the list. Is this an intended behaviour? If

Hi, I am trying to define the as.POSIXct as an S4 method for one of my classes. Trying to define a generic, I am getting an error that it is already differently defined in base. However, if I query for it, there is no definition. Being in base, I also cannot really import it. If I define methods without definig a generic, they will work but with a warning that a new generic will be automatically

Dear list: working with date/times I have come across a problem that ISOdate and ISOdatetime are too slow on large vectors of data. I was surprised just until I looked at the implementation and the man page: "ISOdatetime and ISOdate are convenience wrappers for strptime". In other terms, they convert data to character representation first in order to create a POSIXlt object that is then

Dear list. Has anybody had any issues with ROracle, namely consistently leading to a segmentation fault? One of our oracle databases seems to have certain issues at the moment (do not know what exactly though) and if that one is queried ROracle definitely fails with a segmentation fault. Any ideas? Here is the trace and below is also a type of query that crashes it: *** caught segfault ***

Following my previous post on S3 method despatch, I put debug messages in the code of Axis, Axis.default and plot.default in graphics/R/axis.R and graphics/R/plot.R to print the class of x, at and y on plot. After recompiling R, what I see is that x *lost* its class attribute (at least for classes not known to 'graphics') in Axis, called directly from plot.default and this could be the

Dear All: We have been experiencing networking issues so I don't know if this got through; I can't see it in the archive. My sincere apologies if this appears twice. I may have found an unusual bug and am posting here to see if anyone can reproduce it on their system. First of all, sessionInfo(): > sessionInfo() R version 2.7.1 (2008-06-23) i386-apple-darwin8.10.1 locale:

Hi all: since about a month we encountered a problem with R -e command: spaces in the "command" of R -e "command" are no more tolerated. This same issue affects 2.11 patched (05-05-2010), 2.10.1, and current devel (at least the one of two weeks ago). (I skip the mid of the printouts, replaced with ...) * R -e "message('aaa aaa')" ARGUMENT

Hi all, assume the following problem: a function call takes a function object and a data variable and calls this function with this data on a remote host. It uses serialization to pass both the function and the data via a socket connection to a remote host. The problem is that depending on the way we call the same construct, the function may be serialized to include the data, which was not

DeaR list, Pardon the stupidity of this question but I've been trying this for a while now without success. I've followed the example given in the green book "programming with data", and I now have a working example of a S4 class with a few methods (plot, summary, as.data.frame). It's all very nice in one file, but I cannot find the way to put this information in a

Dear R devels Yesterday I was slightly surprised to notice that R incorrectly detected some of the locale settings. I am not sure whether this is important, but I preferred to drop a message. In the R output below, some entries that should have been "en_GB.UTF-8" are presented as "C". Regards Liviu > sessionInfo() R version 2.9.1 (2009-06-26) x86_64-pc-linux-gnu locale:

Hi, I have two example packages, test1 and test2, where the only code in them is: setGeneric("predict", function(object, ...) standardGeneric("predict")) (get them from http://www.cs.mu.oz.au/~gabraham/test1.tar and http://www.cs.mu.oz.au/~gabraham/test2.tar) The difference between them is that first does not have a namespace, and loads fine. The second has a namespace

I get an error when running "make check" after building R-devel r70629 on Ubuntu 14.04. Here are the relevant lines in the file "reg-tests-1c.Rout.fail": > ## m1z uses match(x, *) with length(x) == 1 and failed in R 3.3.0 > ## PR#16909 - a consequence of the match() bug; check here too: > dv <- data.frame(var?1 = 1:3, var?2 = 3); dv[,"var?2"]

Hi there. With OpenSSH 3.0.2p1 on Solaris, the locale does not appear to get set correctly at login, as it does with, say telnet: /etc/default/init: TZ=GB CMASK=022 LC_COLLATE=en_GB.ISO8859-1 LC_CTYPE=en_GB.ISO8859-1 LC_MESSAGES=C LC_MONETARY=en_GB.ISO8859-1 LC_NUMERIC=en_GB.ISO8859-1 LC_TIME=en_GB.ISO8859-1 When logging in via SSH: scot /home/scot > locale LANG=

On 18/05/16 13:50, Martin Maechler wrote: >>>>>> Mikko Korpela <mikko.korpela at helsinki.fi> >>>>>> on Wed, 18 May 2016 13:05:24 +0300 writes: > > > I get an error when running "make check" after building > > R-devel r70629 on Ubuntu 14.04. > > Here are the relevant > > lines in the file

Dear List, Further to my earlier email, I note that, for me at least, R CMD check is *not* reading R_LIBS from ~/.R/check.Renviron on R 2.15.2 patched (r61228) and R Under Development (r61660). The only way I can get R CMD check to look for packages in a user-supplied library is by explicitly exporting R_LIBS set to the relevant directory. R CMD build *does* read R_LIBS from ~/.R/build.Renviron

Dear All, I have never had this problem before. I run debian testing on my box and I have recently update my R environment. Now, see what happens when I try the most trivial of all plots > plot(seq(22)) Error in (function (display = "", width, height, pointsize, gamma, bg, : X11 module cannot be loaded In addition: Warning message: In (function (display = "", width,

Hi, I wonder if this is something on my machine locally or R in general. When I do the following: > plot(c(0,1),c(0,1),main=expression(paste(symbol("D"),"D",sep=""))) I get a plot with a title having uppercase delta followed by "D". But in the following > pdf(file="deltaTest.pdf") >

Dear All I posted a similar question quite some time ago, but that was on an old OS and an old version of R. This time I have RHEL 4, which is still supported as an OS, and R 2.5.1 which is not *that* old. My sessionInfo() gives: > sessionInfo() R version 2.5.1 (2007-06-27) i686-redhat-linux-gnu locale: LC_CTYPE=en_GB.UTF-8;LC_NUMERIC=C;LC_TIME=en_GB.UTF-8;LC_COLLATE=en_GB.U