Displaying 20 results from an estimated 10000 matches similar to: "Pb with lapply()"
2014 Jul 06
2
Depot for S3 to S4 generics (as in stats4)?
Dear developers,
the implementation of S4 generics for existing S3 ones in the base
package is concerned to be a threat to quick startup times [1]. But
since S4 is promoted, and S3/S4 interoperability a pain when package
developing [2], are there efforts to improve the situation? E.g. an S3
free system, etc.
A good thing [2] is the package 'stats4', including some setGeneric
calls (e.g.
1999 Dec 20
1
Manual: writing R Extensions (PR#380)
-- Happy holidays! --
Dear R Development Core Team,
I want to thank you *very much* for the new "Writing R Extensions" manual
published with RW0.901 and hope this is the right place to report some
possible typos.
page 17, example given in the middle of the page, I think it should read
REAL(version) = 3.0;
^^^^^^^
page 23, second example, I think the parameter definition
2004 Feb 17
2
interfacing C++ using .Call
Hi folks,
I apologise if this is in the documentation somewhere, but I can't
seem to find it. I also did a search of CRAN without any success. I'm
using R-1.8.1 (pre-compiled) on Windows 2000 with Rtools and mingw 2.0.0
(which includes gcc/g++ 3.2).
I'm trying to link some C++ code from another application to R using the
.Call interface and am experiencing some problems. I was
2010 Apr 30
3
Why do data frame column types vary across apply, lapply?
Hi,
I still have little ability to predict how these functions will treat the
columns of data frames:
> # Here's a data frame with a column "a" of integers,
> # and a column "b" of characters:
> df <- data.frame(
+ a = 1:2,
+ b = c("a","b")
+ )
> df
a b
1 1 a
2 2 b
>
> # Except -- both columns are characters:
>
2005 Sep 10
4
Issue tracking in packages [was: Re: [R] change in, read.spss, package foreign?]
I would vote for allowing a URL or external file name in in DESCRIPTION,
whose contents could be automatically displayed for the user when
needed. Our changelogs are automatically generated by CVS and are on
the web.
--
Frank E Harrell Jr Professor and Chair School of Medicine
Department of Biostatistics Vanderbilt University
2006 Oct 26
1
Pb with .findInheritedMethods
Hi again,
Here is a very simplified version of a class hierarchy
defined in the Biobase package (Bioconductor). I post
here because this seems to be an S4 related problem:
setClass("A", representation(name="character"))
setMethod("initialize", "A", function(.Object) {.Object at name <- "I'm
an A"; .Object})
2011 Oct 07
1
Pb building sets of S4 / RefClass objects with package "sets"
Hi,
does anyone know if it is possible to construct sets of S4 objects?
It seems the constructor set does not like it:
Error in as.vector(x, "character") :
cannot coerce type 'environment' to vector of type 'character'
Regards
Johnny
PS: by the way, does anyone know where I can find some examples using the
cset class from the "sets" package, beside the
2007 Aug 15
1
getting lapply() to work for a new class
Hi,
I would like to get lapply() to work in the natural way on a class I've
defined. As far as I can tell, lapply() needs the class to be coercible
to a list. Even after I define as.list() and as.vector(x, mode="list")
methods, though, I still get an "Error in as.vector(x, "list") : cannot
coerce to vector". What am I doing wrong?
# dummy class
2008 Feb 21
3
applying a function to data frame columns
useR's,
I want to apply this function to the columns of a data frame:
u[u >= range(v)[1] & u <= range(v)[2]]
where u is the n column data frame under consideration and v is a data frame
of values with the same number of columns as u. For example,
v1 <- c(1,2,3)
v2 <- c(3,4,5)
v3 <- c(2,3,4)
v <- as.data.frame(cbind(v1,v2,v3))
uk1 <- seq(min(v1) - .5, max(v1) + .5,
2006 Oct 26
2
S4 pb in R 2.5.0
Hi,
When playing interactively with the S4 system, I've tried
to define the following class:
> setClass("A", representation("integer"))
[1] "A"
> showClass("A")
Slots:
Name: .Data
Class: integer
Extends:
Class "integer", from data part
Class "vector", by
2023 Nov 11
1
New syntax for positional-only function parameters?
6 ?????? 2023 ?. 22:54:24 GMT+03:00, mikkmart via R-devel <r-devel at r-project.org> ?????:
>The pattern of functions accepting other functions as inputs and
>passing additional ... arguments to them is prevalent throughout
>the R ecosystem. Currently, however, all such functions must one
>way or another tackle the problem of inadvertently passing arguments
>meant to go to
2008 Sep 09
2
make methods work in lapply - remove lapply's environment
I've defined my own version of summary.default,
that gives a better summary for highly skewed vectors.
If I call
summary(x)
the method is used.
If I call
summary(data.frame(x))
the method is not used.
I've traced this to lapply; this uses the new method:
lapply(list(x), function(x) summary(x))
and this does not:
lapply(list(x), summary)
If I make a copy of lapply, WITHOUT the
2011 Sep 15
2
Returning the name of an object passed directly or from a list by lapply
Dear folks:
Let?s suppose I want a function to print return the name of the object
passed to it.
> myname <- function(object) {out<-deparse(substitute(object)); out}
This works fine on a single object:
> O1 <-c(1:4)
> myname(O1)
[1] "O1"
However it does not work if you use lapply to pass it the same object from a
list:
> O2 <-c(1:4)
> object.list <-
2001 Nov 05
1
Re: vorbis-tools PB project: requirements
On Monday, November 5, 2001, at 12:54 AM, dongoodman wrote:
> ok, I haven't tried compiling your vorbis-tools PB project, as I still
> can'
> t get vorbis.framework to like me. test linkings still complain about
> too many main()'s...and in fact, quite a lot of the c files in the
> vorbis source have main()'s in them...how very odd.
>
I'm sorry, I have
2002 Nov 12
1
pb with imq
hi stef
oone more pb while shaping incoming traffic with imq .this one
tc qdisc add dev imq0 root handle 1: htb default 20
tc class add dev imq0 parent 1: classid 1:1 htb rate 2mbit burst 15k
tc class add dev imq0 parent 1:1 classid 1:10 htb rate 1mbit
tc class add dev imq0 parent 1:1 classid 1:20 htb rate 1mbit
tc qdisc add dev imq0 parent 1:10 handle 10: pfifo
tc qdisc add dev imq0 parent
2003 May 15
0
[Bug 567] pb at the end of compil with a dump of ssh-keygen
http://bugzilla.mindrot.org/show_bug.cgi?id=567
Summary: pb at the end of compil with a dump of ssh-keygen
Product: Portable OpenSSH
Version: -current
Platform: MIPS
OS/Version: IRIX
Status: NEW
Severity: critical
Priority: P1
Component: Build system
AssignedTo: openssh-unix-dev at mindrot.org
2005 Sep 08
0
Pb with file access rights on a NFS server
Hello,
I'm having troubles with access rights on files located on a NFS server
(actually an EMC NAS NS600).
The client machine is a Linux SuSe E9.0 and the samba suite version is
samba-3.0.14a-0.4, directly installed from a Linux package.
The users connect to the Linux server without any pb using their MS Windows
account through Winbind+Kerberos.
They belong to the right Windows groups but
2002 Nov 05
1
PB samba 2.5 and clients W2K SP2-SP3
English version :
Hi i've some problems with samba 2.5 and MDK 8.2 each time I log on a WIN2K
SP2 or SP3 client I get the message :
your password expires today would you like to change it ? yes no
Even if I change it , I get the message one more time when I log on the
client the next time..
I read the o'reilly and the how to and I didn't see any param for password
expiration in
2009 Mar 18
1
Why S4 methods of S3 'base' generics are not used in 'base' functions ?
Dear list,
It seems that S4 methods defined for an S3 'base' generic
are not used in 'base' functions.
This can be problematic when 'base' functions start with
something like 'as.matrix'.
### START R code
setClass("classA", contains = "matrix",
representation(realData = "numeric"))
setMethod("as.matrix",
2004 Feb 25
1
Pb with RODBC installation
Hello
I'm starting to use R on a Windows XP Pro machine which is not connected to
the internet;
I want to use database connection so I downloaded the file "RODBC_1.0-4.tar"
from CRAN;
this file is not accepted by the
"Packages->Install Packages from local zip file" menu function of R!!!
I would like to know why it doesn't work and if it's possible to get