Displaying 20 results from an estimated 500 matches similar to: "R-beta: Characters in .C"
2009 Mar 03
1
profiler and loops
Hello,
(This is follow up from this thread:
http://www.nabble.com/execution-time-of-.packages-td22304833.html but
with a different focus)
I am often confused by the result of the profiler, when a loop is
involved. Consider these two scripts:
script1:
Rprof( )
x <- numeric( )
for( i in 1:10000){
x <- c( x, rnorm(10) )
}
Rprof( NULL )
print( summaryRprof( ) )
script2:
2002 Jul 19
1
Rprof and setMethod conflict?
I noticed this oddity about R profiling and setMethod.
First, I "test out" Rprof.
> require(methods)
Loading required package: methods
[1] TRUE
>
> Rprof("test.out")
> data.frame("a")
X.a.
1 a
> Rprof(NULL)
So far, so good. Next, I define myClass.
> setClass("myClass", representation(mySlot = "numeric"))
[1]
2020 Feb 26
1
Profiling: attributing costs to place of invocation (instead of place of evaluation)?
Hi
Consider the following example:
f <- function(expr) g(expr)
g <- function(expr) {
? h(expr)
}
h <- function(expr) {
? expr # evaluation happens here
? i(expr)
}
i <- function(expr) {
? expr # already evaluated, no costs here
? invisible()
}
rprof <- tempfile()
Rprof(rprof)
f(replicate(1e2, sample.int(1e4)))
Rprof(NULL)
cat(readLines(rprof), sep = "\n")
#>
2004 Jun 28
2
Problem with hasArg and the ... argument (PR#7027)
Full_Name: Jelle Goeman
Version: 1.9.0
OS: mingw32, windows 2000
Submission from: (NULL) (145.88.209.33)
Hi Everyone,
I get very strange results using the function hasArg with the ... function
argument. In my own function:
> gt <- globaltest(X,Y)
> sampling(gt)
works fine, but
> sampling(globaltest(X,Y))
results in:
Error in eval(expr, envir, enclos) : "missing"
2016 Jun 04
1
RProfmem output format
I'm picking up this 5-year old thread.
1. About the four memory allocations without a stacktrace
I think the four memory allocations without a stacktrace reported by Rprofmem():
> Rprofmem(); x <- raw(2000); Rprofmem("")
> cat(readLines("Rprofmem.out", n=5, warn=FALSE), sep="\n")
192 :360 :360 :1064 :2040 :"raw"
are due to some
1997 Aug 25
2
R-alpha: eigen and batch
Batch:
Putting q(save=F) at the end of my file does not work in my
context because I can no longer source the file without quitting. I
have that quit statement in my .First so that I always quit that way
interactively. The problem is that it is ignored in batch.
eigen:
The crash occurs on my 586 running Red Hat Linux 2.0.27 but not on
my son's 486 running SLackware Linix 2.0.29. We both
1997 Aug 22
2
R-alpha: eigen
eigen(matrix(rep(1,9),ncol=3),only.values=T)
works repeatedly but eventually (after 3 or 4 goes) gave a core dump
of 11mb (I think only the first answer was right).
if I type
gc()
immediately after the first call, I get a core dump right away (this
might possibly be related to my huge core dumps with nlm)
eigen(matrix(rep(1,9),ncol=3))
core dumps immediately after the first call
Jim
2003 Mar 26
0
Rprof/UseMethod
I'm having difficulty with Rprof. I have a documentation example test.qss that
runs fine without profiling, but under Rprof,
> Rprof()
> source("test.qss")
Error in standardGeneric("model.matrix") :
UseMethod used in an inappropriate fashion
Luke wrote about a similar circumstance last summer:
# From: Luke Tierney (luke@stat.umn.edu)
# Date: Fri Jul
2016 Mar 16
4
Problem with __builtin_object_size when it depends on a condition
Optimizer doesn't know how to calculate the object size when it finds
condition that cannot be eliminated. There is example:
-----------------------------------------------
#include<stdlib.h>
#define STATIC_BUF_SIZE 10
#define LARGER_BUF_SIZE 30
size_t foo(int flag) {
char *cptr;
char chararray[LARGER_BUF_SIZE];
char chararray2[STATIC_BUF_SIZE];
if(flag)
cptr =
2016 Mar 17
3
Problem with __builtin_object_size when it depends on a condition
I made a mistake here, I get zero same as you. I want to fix it to get
correct value.
On 16.03.2016. 19:28, Duncan P. N. Exon Smith wrote:
>> On 2016-Mar-16, at 09:39, Strahinja Petrovic via llvm-dev <llvm-dev at lists.llvm.org> wrote:
>>
>> Optimizer doesn't know how to calculate the object size when it finds condition that cannot be eliminated. There is example:
2004 May 07
3
Contribution to 3.8.1pl1
Hello,
I added the support for netgroups to be used in the
AllowUsers and DenyUsers parameters. This has some
advantages:
* hostnames or ip addresses need not to be written or
maintained in the sshd_config file, but can be kept
abstract names what also simplifies a bit largescale
openssh installations
* sshd_config needs not change and sshd be restarted
when changing the list of allowed /
2011 Aug 07
2
[PATCH] kinit minor checkpatch cleanup
coding style fixes.
FIXME: check that compiled bin the same1!!
---
usr/kinit/initrd.c | 3 ++-
usr/kinit/kinit.c | 12 ++++--------
usr/kinit/kinit.h | 20 ++++++++++----------
usr/kinit/name_to_dev.c | 6 +++---
usr/kinit/nfsroot.c | 5 ++---
5 files changed, 21 insertions(+), 25 deletions(-)
diff --git a/usr/kinit/initrd.c b/usr/kinit/initrd.c
index
1998 Jan 03
1
R-beta: NextMethod(.Generic) bug
I'm a day-old R newbie (but a war-weary S veteran), with couple of
first-day questions:
In R 0.61, this code fails.
Ops.test <- function(e1,e2)
{
e1 <- NextMethod(.Generic)
e1
}
x <- 4
class(x) <- "test"
y <- x < 3
The error message is "Error in NextMethod(.Generic) : negative length vectors
are not allowed.".
I assume it is a bug.
2009 Jun 18
2
Argument as.integer(NA) to a function C
Hi the list,
I am writing a R function that call a C function. The C function needs
integers but I do not manage to give a NA integer as argument :
--- C code ---
void essai(int *t){
Rprintf("\nT0=%i T1=%i T2=%i T3=%i",t[0],t[1],t[2],t[3]);
}
--- R ---
boub <- c(1,2,3,4)
.C("pour",as.integer(boub),NAOK=TRUE)
# T0=1 T1=2 T2=3 T3=4[[1]]
# [1] 1 2 3 4
boub <-
2009 Jan 27
1
Segmentation fault in MSetIterator get_weight
Hi,
I'm using xapian with c# and mono and i'm having a segfault in get_weight.
When i print the index variable, the value is clearly too high.
I think something write over it. Do you have any idea on how i could
trace the beginning of the segmentation fault ?
Thanks,
--
Yann
2009 Jun 16
1
calling handlers within R_tryEval
Hello,
When using R_tryEval (from JRI in my case), is there a way to setup
error recovery strategy and more generally calling handlers.
From my reading of context.c, R_tryEval calls R_ToplevelExec which
creates a context like this:
begincontext(&thiscontext, CTXT_TOPLEVEL, R_NilValue, R_GlobalEnv,
R_BaseEnv, R_NilValue, R_NilValue);
so I guess what I am trying to do is add
2016 Mar 27
2
sys.function(0)
As I understand
https://stat.ethz.ch/R-manual/R-devel/library/base/html/sys.parent.html
sys.function(n) returns the function associated with stack frame n.
Since frame 0 is defined as .GlobalEnv which is not associated with a
function, I would expect this to always return NULL. However, it does not:
> sys.function()
NULL
> f <- function(x) sys.function(x)
> f(0)
function(x)
2007 Dec 31
2
the woes of NA
Joyful.
I'm adapting a FORTRAN 77 package for use with R. Pretty
straightforward.
Except for a glitch it took me some time to figure out. This existing
package has subroutines which have parameters called "NA". So, I called
subroutines like
bnodes <- function(n, lst, lptr, lend, nodes, nb, na, nt)
{
ensure.all.numeric(list(n, lst, lptr, lend, nodes, nb, n.a, nt),
1998 May 15
1
couldn't find function "print.tframe"
I have an object with an attribute "tframe" for which there is a generic method
print.tframe and also a method print.tframe.default defined in a library.
However, when I use attributes(object) I get the message
$tframe
Error: couldn't find function "print.tframe"
It's as if <primitive: attributes> is not looking through the search list?
Any suggestions?
2005 Jun 06
1
Missing values in argument of .Fortran.
I wish to pass a vector ``y'', some of whose entries are NAs to a
fortran subroutine which I am dynamically loading and calling by
means of .Fortran(). The subroutine runs through the vector entry by
entry; obviously I want to have it do one thing if y[i] is present
and a different thing if it is missing.
The way I am thinking of proceeding is along the xlines of:
ymiss <- is.na(y)