Full_Name: FAN
Version: 2.4.0
OS: Windows
Submission from: (NULL) (159.50.101.9)
These are expected:
grep([\-|c], c(a-a,b))
[1] 1
gsub([\-|c], , c(a-a,b))
[1] aa b
but these are strange:
grep([d|\-|c], c(a-a,b))
integer(0)
gsub([d|\-|c], , c(a-a,b))
[1] a-a b
Thanks
Vladimir Dergachev wrote:
On Wednesday 03 January 2007 3:47 am, Erik van Zijst wrote:
Appearantly the R C-API does not provide a mechanism for parallel
execution..
It is preferred that the solution is not based on multi-processing (like
C/S), because that would introduce IPC overhead.
One
Full_Name: Karsten Krug
Version: 2.4.0
OS: Open Suse 10.0, Windows XP
Submission from: (NULL) (88.134.13.50)
I found a problem in the 'optimise' function for one dimensional optimisation.
Example 1:
Try to find a maximum of the function below with the use of 'optimise' in the
interval
Why do you think this is a bug in R? You have not told us what you
expected, but the character range |-| contains only | . Not agreeing with
your expectations (unstated or otherwise) is not a bug in R.
\- is the same as -, and - is special in character classes. (If it is
first or last it is
Ross Boylan wrote:
On Wed, Jan 03, 2007 at 11:46:16AM -0600, Ricardo Rios wrote:
Hi wizards, does somebody know Which programming paradigm is the most
used for make R packages ? Thanks in advance.
You need to explain what you mean by the question, for example what
paradigms you have in
the issue here is a numerical one; for instance in your first example
check:
eps - sqrt(.Machine$double.eps)
opt1 - optimise(ex1, lower = 0 - eps, upper = 0.5, maximum = TRUE)
# or
opt1 - optimise(ex1, lower = 0 + eps, upper = 0.5, maximum = TRUE)
which gives the correct results.
I hope it
It is possible to do some of these things with the 'debug' package-- the
article in R-news 2003 #3 shows a few of the tricks. Suppose 'b1' calls
'c1'. If 'c1' exists as permanent function defined outside 'b1' (which
I generally prefer, for clarity), then you can call 'mtrace( c1)' and
'c1' will be
That's only incidental to the story. The problem is (code in
src/appl/fmin.c) that at the first step symmetry (in both examples) gives
fu=fx, and the code has
if (fx = fu) {
if (u x)
a = u;
else
b = u;
}
if (fu =
A programming paradigm is a paradigmatic style of programming (compare
with a methodology, which is a paradigmatic style of doing software
engineering). I think , the programming paradigm most used for make R
packages is the functional programming , but I don't know this
statistic. I need this
Its object oriented in the sense of the Dylan language. It has
some functional elements but true functional languages have
better support for recursion, tail recursion and absence of side
effects whereas side effects are common in R.
On 1/4/07, Ricardo Rios [EMAIL PROTECTED] wrote:
A
On Thu, 4 Jan 2007, Ricardo Rios wrote:
engineering). I think , the programming paradigm most used for make R
packages is the functional programming , but I don't know this
statistic. I need this information in my thesis.
Then you may be in trouble. R (and S before it) are not tidily
On Thu, 2007-01-04 at 17:06 +1100, [EMAIL PROTECTED] wrote:
It is possible to do some of these things with the 'debug' package-- the
article in R-news 2003 #3 shows a few of the tricks. Suppose 'b1' calls
'c1'. If 'c1' exists as permanent function defined outside 'b1' (which
I generally
Vladimir Dergachev wrote:
On Thursday 04 January 2007 4:54 am, Erik van Zijst wrote:
Vladimir Dergachev wrote:
On Wednesday 03 January 2007 3:47 am, Erik van Zijst wrote:
Appearantly the R C-API does not provide a mechanism for parallel
execution..
It is preferred that the solution is not
Vladimir, Jeff, et al.,
This is more pre-publicity than immediately available solution, but
we've been working on the 'RWebServices' project. The R evaluator and
user functions get wrapped in Java, and the Java exposed as web
service. We use ActiveMQ to broker transactions between the front-end
Let me detail a bit my bug report:
the two commands (expected vs strange) should return the
same result, the objective of the commands is to test the presence
of several characters, '-'included.
The order in which we specify the different characters must not be
an issue, i.e., to test the
I am experiencing some odd behavior with the .Call interface, and I am hoping
someone out there can help me with it. Below is a simple example (in that
there are R packages that do exactly what I want), but this code illustrates
the problem. Thanks in advance for any help you can provide.
FanX == Xiao Gang Fan [EMAIL PROTECTED]
on Thu, 04 Jan 2007 21:52:07 +0100 writes:
FanX Let me detail a bit my bug report: the two commands
FanX (expected vs strange) should return the same
FanX result, the objective of the commands is to test the
FanX presence of several
Michael Braun [EMAIL PROTECTED] writes:
Suppose I want to compute the log density of a multivariate normal
distribution using C code and the gsl library. My R program is:
dyn.load(mvnorm-logpdf.so)
x-c(0,0,0,0,0,0)
mu-c(0,0,0,0,0,0)
sig-diag(6)
print(sig)
Both Solaris 8 grep and GNU grep 2.5.1 give
gannet% cat foo.txt
a-a
b
gannet% egrep '[d|-|c]' foo.txt
gannet% egrep '[-|c]' foo.txt
a-a
agreeing exactly with R (and the POSIX standard) and contradicting 'Fan'.
On Thu, 4 Jan 2007, Fan wrote:
Let me detail a bit my bug report:
the two
Hi Ross
Suppose 'b1'
calls 'c1'. If 'c1' exists as permanent function defined outside
'b1' (which I generally prefer, for clarity), then you can call
'mtrace( c1)' and 'c1' will be invoked whenever it's called-- you
don't have to first 'mtrace' 'b1' and then manually call
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