Displaying 20 results from an estimated 20000 matches similar to: "Trailing "/" makes file.exists() return FALSE (PR#1098)"
2002 May 21
4
setClass() and packages
Where should the setClass() ('methods' package) calls be placed in a
package? I try to follow a one-class-one-file principe, but since
setClass("ClassA", "ClassB") has to come a after setClass("ClassB", [snip])
it is not possible to fully follow this rule. So the best I can do now is to
put all setClass() calls in a file named "000.R" (I know this
2001 Sep 28
1
savehistory: Suggestions to a \seealso{} (PR#1104)
Full_Name: Henrik Bengtsson
Version: 1.3.1
OS: WinMe
Submission from: (NULL) (130.235.2.229)
I suggest the following \seealso to be added for savehistory:
\seealso{
To execute \code{savehistory} automatically when \R quits see \link{.Last} and
\link{.Rprofile}.
}
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2002 Mar 07
2
Is it possible to open a specific file in the HTML browser like help(htmlhelp=TRUE) does?
Dear all/anyone, after generating a HTML file "result.html" from within [R],
I would like to open the default HTML browser (like help.start() does) to
show the file. Is it possible to do this (without trying to do a system
dependent search for possible browsers)? I browsed the source of package
'base' (R v1.4.1 WinMe) and I found the following in help():
2004 Jul 27
2
Incorrect display of b[hat((a))] expression in plots
Hi, I am not sure if this is a bug or a non-implement feature of
text-drawing functions with TeX-style expression, but hat() and some of its
equals does not get the right "bounding boxes" if they are put in sub- or
superscripts. For instance, for the expression 'b[hat(a)]' the hat() seems
to shift 'hat(a)' too much to the right of 'b'. Try the below example and
2002 Mar 06
3
Loading tcltk package fails on WinMe/Cygwin but works with Rgui
I am investigating how well R/tcltk is supported on different system and I
ran into the same problem as Christian Schulz reported on February 7, 2002.
I am using [R] v1.4.1 on WinMe and ActiveTcl 8.3.2. Loading tcltk within
Rgui works just fine and both demo(tkdensity) and demo(tkttest) works as
expected. However, when I start R from my Cygwin terminal dyn.load() fails
to load the library:
% R
2002 Jul 08
2
Methods/package for working with sets and intervals
Before reinventing the wheel, is there a package for working on (nice)
sets and intervals, where one can for instance check if a set of intervals
contains a scalar, taking the union and intersection of some intervals
etc?
Example:
# Defining the set i = [1,2) + [3.5, 10]
i <- c(1,2, 3.5, 10)
attr(i, "include") <- c(TRUE, FALSE, TRUE, TRUE)
x <- 0:12
# Get
2003 Sep 03
1
Last line in .Rprofile must have newline (PR#4056)
Full_Name: Henrik Bengtsson
Version: R v1.7.1
OS: WinXP Pro, Solaris 9
Submission from: (NULL) (130.235.2.229)
A colleague of mine who is new to R had problems setting up his .Rprofile and we
tracked it down to the following. On both WinXP and Solaris with Rv1.7.1 we
noticed that the *last* line in .Rprofile has to have a *newline* to be
evaluated. For instance, starting R with the following
2001 Sep 10
3
Offline change detection methods?
Dear [R] people, I am looking for a method to test if there are any
changes (jump points) in a time series data set or not. If there are, I
would like to identify the jump points. All the data is available from the
beginning so an offline method could be used.
The current data set that I have could be seen as a time series with
five almost equally sized segments that stands out to have different
2002 Feb 20
2
How to get the penalized log likelihood from smooth.spline()?
I use smooth.spline(x, y) in package modreg and I would like to get
value of penalized log likelihood and preferable also its two parts. To
make clear what I am asking for (and make sure that I am asking for the
right thing) I clarify my problem trying to use the same notation as in
help(smooth.spline):
I want to find the natural cubic spline f(x) such that
L(f) = \sum_{k=1}{n} w[k](y[k] -
2001 Dec 27
1
Binaries of R-1.4.0 for Windows
A binary distribution of R-1.4.0 to run on Windows 95, 98, NT4.0, 2000
and XP on Intel/clone chips is available at
http://sirio.stat.unipd.it/RWin
It will be mirrored at a CRAN site near you in a couple of days.
See http://sirio.stat.unipd.it/RWin/CHANGES for a list of
Windows-specific changes.
guido masarotto
2001 Dec 27
1
Binaries of R-1.4.0 for Windows
A binary distribution of R-1.4.0 to run on Windows 95, 98, NT4.0, 2000
and XP on Intel/clone chips is available at
http://sirio.stat.unipd.it/RWin
It will be mirrored at a CRAN site near you in a couple of days.
See http://sirio.stat.unipd.it/RWin/CHANGES for a list of
Windows-specific changes.
guido masarotto
2002 Feb 06
4
Weighted median
Is there a weighted median function out there similar to weighted.mean()
but for medians? If not, I'll try implement or port it myself.
The need for a weighted median came from the following optimization
problem:
x* = arg_x min (a|x| + sum_{k=1}^n |x - b_k|)
where
a : is a *positive* real scalar
x : is a real scalar
n : is an integer
b_k: are negative and positive scalars
2002 Feb 19
1
library(methods): setMethod with "ANY" fails. (PR#1317)
Full_Name: Henrik Bengtsson
Version: R v1.4.1
OS: WinMe
Submission from: (NULL) (217.208.14.137)
Doing the following
library(methods)
setGeneric("foo", function(x) standardGeneric("foo"))
setMethod("foo", "ANY", function(x) cat(x))
fails with
Error in while (value[n] == "ANY") n <- n - 1 :
missing value where logical needed
It
2004 Oct 15
1
Building package compatible w/ R v1.9.1 and R v2.0.0?
Hi,
just in the process of updating my packages for R v2.0.0 and I have not had
time to followed the R v2.0.0 discussions so maybe my questions have already
been answered.
A concern I have is that when creating packages they should be backward
compatible with R v1.9.x for a while until all users and computers has
migrated to R v2.0.x. It is pretty straightforward to setup my packages so
that
2004 Jun 10
1
tryCatch() and preventing interrupts in 'finally'
With tryCatch() it is possible to catch interrupts with tryCatch(). Then you
can use a 'finally' statement to clean up, release resources etc. However,
how can I "protect" against additional interrupts? This is a concern when
the hold down Ctrl+C and generates a sequence of interrupts. Example:
tryCatch({
cat("Press Ctrl+C...\n");
Sys.sleep(5);
}, interrupt =
2004 Nov 15
1
UseMethod call with no arguments
Dear R developers,
I will ask a very straightforward question concerning UseMethod's future,
because people depending on my code wonder what will happen to it next.
In R v2.0.1 NEWS it says
o The undocumented use of UseMethod() with no argument is now
formally deprecated.
and in the R v2.0.1 help(UseMethod) it says
'UseMethod' accepts a call with no arguments and tries to
2002 Jan 06
1
How to get setGeneric() to work?
Dear all, I can't see how setGeneric() works. I know perfectly well how to
define
library(methods);
setClass("Square", representation(side="numeric"));
# Will become the default method.
getArea <- function(object) {
stop(paste("Method getArea() is not defined for this class:",
data.class(object)));
}
setMethod("getArea",
2002 Feb 28
2
Failed file("foo", "r") keeps file open? (PR#1333)
Full_Name: Henrik Bengtsson
Version: R v1.4.0
OS: Solaris 8
Submission from: (NULL) (130.235.3.49)
When I am trying the following on Rv1.4.0 on Solaris 8, I get that the
"cannot close output sink connection":
% R --vanilla
tmpfile <- tempfile() # Create a filename that does not exist
for(k in 1:100) {
cat(k, ": ");
try(fh <- file(tmpfile, "r"))
2002 Aug 23
5
quick xtable questions
Hi, I'm creating a lot of tables in a file for inclusion in a Latex
document. When I try to compile that document there is an error "too many
unprocessed floats." Is there a way to correct this?
Also, in a Latex table I want R to put in a $\beta$ in the caption, but it
puts a weird system character instead of the \b
Brian
2002 Jan 24
3
Best way to check/assert a certain version of or a package
When loading a package with library(APkg) or require(APkg) I would like to
make sure that (1) the correct version of [R] is installed. If not an
informative error message should be given. I would also like to make sure
that (2) another required package which is loaded from within the APkg
package (by require(OtherPkg)) is of a certain version or later.
First of all, I believe that the check