Displaying 20 results from an estimated 20000 matches similar to: "Possible to save workspace image including packages and class definitions?"
2010 Jan 15
1
Can an object reference itself?
Dear List,
I am not really familiar with any other language than R, but I?ve heard that
in other languages there is something called ?self referencing?.
Here?s what I?m trying to get an answer for:
Suppose there is a function that takes as its input a value of a slot of an
S4 object. The function itself is stored in another slot of the SAME S4
object. Is it then possible to have the function
2010 Nov 04
2
Roxygen: @example tag does not work for me
Dear list,
somehow I can't get the Roxygen tag "@example" to work for me.
My "Roxygen-Header" of a script containing, say, a function looks like this:
#' My header
#'
#' My description
#'
#' @param a Blabla.
#' @param b Blabla.
#' @return \code{TRUE}.
#' @callGraphPrimitives
#' @references
#'
2010 Nov 17
2
Reference classes: accessor functions via 'getRefClass(...)$accessors(...)'
Hi there,
I''d like to choose between an "static" and "dynamic" access of a reference
class field, say ''a''.
myObj <- getRefClass("Blabla")$new()
Static: myObj$a
Dynamic: myObj$a.get() where the function retrieves the data
from a database (or some other location), stores it to a buffer and
2010 Nov 17
0
WG: Reference classes: opinion on OOP design
Sorry, never sent an attachment before. I think my .R file didn't pass, so
I'm attaching a .txt instead.
-----Urspr?ngliche Nachricht-----
Von: Janko Thyson [mailto:janko.thyson at ku-eichstaett.de]
Gesendet: Mittwoch, 17. November 2010 19:56
An: 'r-devel at r-project. org'
Betreff: Reference classes: opinion on OOP design
Dear list,
I?m aware that this post does not really
2011 Mar 07
1
WG: Reference classes: error with missing arguments in method calls
Dear list,
a while ago I posted this at r-devel but got no answers. Hope it?s okay to
give it a shot again by cross-posting it here.
TIA for any comments,
Janko
Von: Janko Thyson [mailto:janko.thyson.rstuff at googlemail.com]
Gesendet: Montag, 21. Februar 2011 00:58
An: r-devel at r-project. org (r-devel at r-project.org)
Betreff: Reference classes: error with missing arguments in method calls
2011 Jun 03
2
Bug or feature: using "ANY" as a generic field class (was: '[R] Is there a (virtual) class that all R objects inherit from?)
Dear list,
I was wondering if you could help me out in clarifying something:
Is it possible to use class "ANY" in slots/fields of formal classes if you
a) do not want to restrict valid classes of that field and
b) if you are making explicit use of class inheritance?
It seems to work in simple scenarios but produces errors when class
inheritance comes into play. So I was
2010 Aug 17
4
Problems building own package (Error: "package has been build before R-2.10.0")
Dear List,
I’m doing my first baby steps towards developing own R Packages and ran into
the following problem:
R CMD check mypackage works fine (no errors, no warnings)
R CMD build mypackage works fine (no errors, no warnings)
R CMD INSTALL –library=”C:\R\R-2.11.1\library”
“something\mypackage\mypackage_1.0.tar.gz” works fine (no errors, no
warnings)
However, when I try loading the
2010 Aug 17
4
Problems building own package (Error: "package has been build before R-2.10.0")
Dear List,
I’m doing my first baby steps towards developing own R Packages and ran into
the following problem:
R CMD check mypackage works fine (no errors, no warnings)
R CMD build mypackage works fine (no errors, no warnings)
R CMD INSTALL –library=”C:\R\R-2.11.1\library”
“something\mypackage\mypackage_1.0.tar.gz” works fine (no errors, no
warnings)
However, when I try loading the
2011 May 19
0
Flattening lists and environments (was: "how to flatten a list to the same level?")
Dear list,
I came up with a two functions that flatten arbitrary deeply nested
lists (as long as they're named; not tested for unnamed) and
environments (see attachment; 'flatten_examples.txt' contains some
examples).
The paradigm is somewhat similar to that implemented in 'unlist()', yet
extends it. I would have very much liked to build upon the superfast
functionality
2010 Mar 15
1
XML: Slower parsing over time with htmlTreeParse()
Sorry, I listed the wrong package in the header of my previous post!
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Dear List,
has anyone of you experienced a significant increase in the time it takes to
parse an URL via "htmlTreeParse()" when this function is called
2011 May 19
1
Feature request: extend functionality of 'unlist()' by args 'delim=c("/", "_", etc.)' and 'keep.special=TRUE/FALSE'
Dear list,
I hope this is the right place to post a feature request. If there's
exists a more formal channel (e.g. as for bug reports), I'd appreciate a
pointer.
I work a lot with named nested lists with arbitrary degrees of
"nestedness". In order to retrieve the names and/or values of "bottom
layer/bottom tier", I love the functionality of 'unlist()', or
2012 Jul 30
1
Possible bug in class 'POSIXlt' when including microseconds?
Dear list,
I'm a bit puzzled by an ambiguity with respect to the representation of
micro-/milliseconds when using 'POSIXlt' objects.
It seems that the last digit of the 'sec' attribute sometimes seems to
differ from the digits shown when printing the 'POSIXlt' object. You'll
find a little SO post with some example code here:
2010 Nov 21
1
reference classes: question on inheritance
Dear list,
I have a reference class which should act as a "generic" superclass for
other classes. I've read the respective section at ?setRefClass and put the
name of the superclass to the 'contains' argument of an example subclass
(see class defs below). Classnames are set in a way that shouldn't result in
collation issues (virtual def sourced before superclass def
2011 Jun 29
1
Update MS Windows PATH variable based on a R script
Dear list,
this is not directly an R question, but it is somewhat related to R
aspects, so I hope it's okay to post it here:
I'd like to update my windows PATH based on a script routine in order to
make sure that crucial components are contained. Much like what happens
at the installation of Rtools (if desired). Now, can you do that from
within R or do I need some sort of windows
2010 Nov 23
1
Reference Classes: removing methods -> implications for objects/instances of that class
Dear list,
just to make sure that I understand 'unregistering' methods for S4 reference
classes correctly:
If I registered a method and want to 'unregister' (i.e. remove) this method
again, objects/instance created of the respective class still feature the
removed method until I do an explicit reassign ('my.instance <-
getRefClass("Classname")$new()'), right?
2010 Aug 18
1
Automatically retrieve correct collation
Dear List,
consider the following scenario:
setClass(Class = "A", representation = representation(B = "B", C = "C"))
setClass(Class = "B", representation = representation(C = "C"))
setClass(Class = "C", representation = representation(something =
"character"))
Obviously, the collation for sourcing these defs needs to be: C,
2010 Sep 03
2
Stats not loaded? Method for as.ts() results in error
Dear list,
I've got the following problem:
In a package I'm trying to build, there exists a method for the function
"as.ts()". When checking the package, R always throws the error that it
cannot find a function called "as.ts". To me it seems that the package
"stats" (home of "as.ts()") is not loaded during the checking process even
though
2011 May 30
1
Query super- and subclasses of a class: is there a better way than to use 'completeClassDefinition()'
Dear List,
when I first started to use S4 classes, I used the function
'completeClassDef()' in order to see the super- and subclasses of a
certain class:
setClass(Class="A", representation=list(a="numeric"))
setClass(Class="B", contains="A", representation=list(b="character"))
# Super
x <- completeClassDefinition("B")
2007 Feb 12
1
'Save Workspace' gives "recursive default argument reference" -- workaround?
When signing off R or trying to save a workspace in Windows XP pro SP2,
I receive the following error message -
save.image("C:\\Program Files\\R\\R-2.4.1\\Responses3.RData")
Error in save.image("C:\\Program Files\\R\\R-2.4.1\\Responses3.RData") :
recursive default argument reference
Everything else seems to work fine, and the only function I have written
2010 Nov 04
1
[Roxygen-devel] Roxygen: @example tag does not work for me
> -----Urspr?ngliche Nachricht-----
> Von: roxygen-devel-bounces at lists.r-forge.r-project.org [mailto:roxygen-
> devel-bounces at lists.r-forge.r-project.org] Im Auftrag von Vinh Nguyen
> Gesendet: Donnerstag, 4. November 2010 04:04
> An: roxygen-devel at r-forge.wu-wien.ac.at
> Betreff: Re: [Roxygen-devel] Roxygen: @example tag does not work for me
>
> Try @examples