Displaying 20 results from an estimated 700 matches similar to: "failure in `setClass' examples"
2007 Jul 16
1
S4 coerce
(I am not sure if this is a bug or a request for a more understandable
warning, or possible something obvious I should be posting on r-help.)
I am trying to coerce an new class object to be a DBIConnection and it
does not work the way I think it should:
R version 2.5.1 (2007-06-27) ...
> require("RMySQL") # or require("RSQLite")
Loading required package: RMySQL
Loading
2003 Mar 31
1
setIs?
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
2010 May 29
3
S4 dispatch for .DollarNames (utils)
Hello,
I'm trying to make .DollarNames generic and implement a method for it in
a package. .DollarNames is the function that is now called to get
completion possibilities.
My R code looks like this:
setGeneric( ".DollarNames" )
setClass("track",
representation(x="numeric", y="numeric"))
## A class extending the previous, adding one more
2003 Sep 02
1
completeSubclasses() methods bug (PR#4051)
Full_Name: Colin A. Smith
Version: 1.8.0
OS: Mac OS X 10.2.6
Submission from: (NULL) (128.102.184.81)
annaffy 1.0.1 (in BioC CVS) fails to load. annaffy 1.0 (on the BioC web site)
has the same problem.
It looks like the load is failing because of a bug in completeSubclasses() in
r-devel. It calls setIs() and doesn't specify an environment via the "where"
argument. setIs()
2004 Oct 08
0
user interface and documentation of setIs and setAs, some suggestions (S4).
By reading the documentation for _setIs_ I noted that for the same
object three different names are used.
1) the name of the first argument in the functions coerce and replace in
setIs must be _obj_ (see example section or)
setIs("MVCa","list",coerce=function(obj){obj@list},replace=function(obj,value){obj@list<-value})
2) At the same time in the usage section:
2004 Oct 25
1
usage and behavior of 'setIs'
Hello,
am I using 'setIs' in the correct way in the subsequent (artifical) example?
Do I have to specify explicit 'setAs' for 'list' and 'vector' or
should this work automatically, since "getClass("List1")" states
an explicit coerce also for these classes.
I'm working with R 2.0.0 Patched (2004-10-06) on windows 2000.
Thanks for your
2010 Feb 02
1
S4 setClass / initialize misunderstanding
Hi, I recently ran into this problem. I couldn't find any mention of it in
the setClass documentation.
setClass("Foo", representation(file = "character"))
setMethod("initialize", "Foo", function(.Object, file) {
print(file)
})
setClass("Bar", contains = "Foo")
And the error:
Error in print(file) : argument "file" is
2004 Oct 14
2
setClassUnion
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
2004 Oct 14
2
setClassUnion
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
2006 Apr 07
4
setIs and method dispatch in S4 classes
Dear all,
I have a question regarding setIs and method dispatch in S4 classes:
Consider the following example:
#####################################################
## A02 "contains" A01 by setIs:
setClass("A01", representation(a="numeric",b="numeric"))
setClass("A02", representation(a="numeric",d="numeric"))
2008 Mar 17
1
setAs vs setIs
Hi the list
I am fighting with the twins setAs and setIs...
Here are some questions and comments (comments to myself but that migth
be wrong, it is why I am posting them)
1. Very surprising : using setIs define 'is', 'as<-' but not 'as' ???
2. Using setAs define 'as', 'as<-' but not 'is'...
What surprise me is that as<- can be define by
2004 Oct 08
1
Function _coerce_ in _setIs_ never entered (S4).
Hi,
Please consider the following trivial example.
In the sample code I first define a class MVCa using composition. This
class contains a slot of type list.
Next I define an inheritance relation using the function setIs -> MVCa
"is a" list.
Then I define a function printlength which prints the list-length which
is defined for the type "list".
If I call this function
2016 Mar 19
2
unary class union of an S3 class
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
2016 Mar 19
2
unary class union of an S3 class
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
>
>
2003 May 30
2
Creating a vector class
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
2004 Jan 09
1
pb with install
dear all,
I try to update my Rversion fro 1.7.1 to 1.8.1 on linux. I have a problem
when I try to install pacakges from Bioconductors with :
source("http://www.bioconductor.org/getBioC.R")
and
getBioC(relLevel="release")
somme errors append and when I make a library(affy) for example I obtain :
> library(affy)
Error in setIs("character",
2003 Jun 13
1
Problem with Rcmd check and S4 methods
In the little orientation data package I'm working on, the very first
example fails, even though the same code works when used in a regular
session. In my experience, this usually indicates T or F has been
used instead of TRUE or FALSE, but that's not the case this time.
The error message is
> x <- eulerzyx(1,0,0)
Error: Trying to get slot "validity" from an object of
2008 Nov 26
1
S4 slot containing either aov or NULL
Dear listmembers,
I would like to define a class with a slot that takes either an object
of class aov or NULL. I have been reading "S4 Classes in 15 pages more
or less" and "Lecture: S4 classes and methods"
#First I tried with list and NULL
setClass(listOrNULL")
setIs("list", "listOrNULL")
setIs("NULL", "listOrNULL")
#doesn't
2019 Nov 11
2
class(<matrix>) |--> c("matrix", "arrary") [was "head.matrix ..."]
>>>>> Duncan Murdoch
>>>>> on Sun, 10 Nov 2019 11:48:26 -0500 writes:
> On 10/11/2019 9:17 a.m., Bryan Hanson wrote:
>>
>>
>>> On Nov 10, 2019, at 3:36 AM, Martin Maechler <maechler at stat.math.ethz.ch> wrote:
>>>
>>>>>>>> Gabriel Becker
2004 Jun 18
0
Problem with setValidity() or resetClass() or ... ?
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