Hi Everyone,
I have a question about for loops. If you have something like:
f <- function(x) {
y <- rep(NA,10);
for( i in 1:10 ) {
if ( i > 3 ) {
if ( is.na(y[i-3]) == FALSE ) {
# some calculation F which dep
dify the function for the bookkeeping required to
>> manage whatever lag you need. I use this sometimes when I'm
>> implementing MCMC samplers of various kinds.
>>
>>
>> On 1/30/07, Herve Pages <[EMAIL PROTECTED]> wrote:
>>> Tom McCallum wrote:
Hello,
Just a quick question on best practise. I am converting quite a bit of
legacy C code into R packages and have the following situation:
(1) Legacy object with a double* array in, all over code so don't want to
change any more than I have to.
(2) Do something like:
SEXP arrayT
I was recently converting a MS-Access database to MySQL when I came across
this error:
Error in fromchar(unclass(x)) :
character string is not in a standard unambiguous format
The error occurs because the NULL value of a DateTime field, if not
properly setup or on export to a CSV, can be s
Hi everyone,
In relation to the RODBC odbcClose bug which was fixed back in the
changelog below:
Version: 1.2-3 (2008-01-24, released)
* Plug a memory leak in inRODBCClose (closing a connection),
reported by Stephan Henne.
* Use translateChar() on character data sent
Hi Everyone,
At the end of this email is a transcript of a problem I have found in
RODBC version 2.3-1. It appears that the bug fix in odbcClose for the
memory leak has meant that the garbage collector is falling over when it
tries to free up the extPtr attribute of the RODBC connection po
Hi everyone,
I have been attempting to build a very simple R package interfacing with
some very simple C++ code. Everything I try though results in the
function working but on return it produces a memory error. Here is the
output:
***OUTPUT***
> library(My
Hello all,
I am converting some C code into a package for R and wondered what the
proper way of handling time_t types from C in R was. time_t is a typedef
for long, but R seems to only deal in Integers or Reals, so what is the
proper way of handling time in an R to C conversion ( or visa ve
machine, having
completed all the previous sections of the tutorial for building a
cross-platform version of R.
Many thanks
Tom
--
---
Tom McCallum
WWW: http://www.tom-mccallum.com
Tel: 0131-4783393
Mobile: 07866-470257
__
R-devel@r-project.org mai
86. I never had to do
> anything, just run the script and at least in one case I did
> crosscompile a
> package with C++.
>
>
> R.
>
> On Wednesday 25 October 2006 18:03, Tom McCallum wrote:
>> Hi everyone,
>>
>> I am trying to cross-compile a package I wrote
and call f( newGsource="newg.R" ) but I still get "Original function g".
Any suggestions?
Tom
--
---
Tom McCallum
WWW: http://www.tom-mccallum.com
Tel: 0131-4783393
Mobile: 07866-470257
__
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
On Fri, 27 Oct 2006 14:49:15 +0100, Paul Roebuck <[EMAIL PROTECTED]>
wrote:
> On Fri, 27 Oct 2006, Tom McCallum wrote:
>
>> I have a function f which does something using a function g. Function f
>> is in a library and g has a default stub in the library but will be
On Fri, 27 Oct 2006 15:54:40 +0100, Tom McCallum <[EMAIL PROTECTED]>
wrote:
> On Fri, 27 Oct 2006 14:49:15 +0100, Paul Roebuck <[EMAIL PROTECTED]>
> wrote:
>
>> On Fri, 27 Oct 2006, Tom McCallum wrote:
>>
>>> I have a function f which does something us
Hi everyone,
I am not sure this is possible so I would be interested in your
responses. Say I have a variable 'v' with the string "myargument" in and
I have a function 'f' that takes this argument as follows;
f <- function( myargument=5 ) {
... does something...
}
Is there anyway I can s
Works like a charm - thank you very much.
Tom
On Tue, 07 Nov 2006 20:45:04 -, Vladimir Dergachev
<[EMAIL PROTECTED]> wrote:
> On Tuesday 07 November 2006 3:28 pm, Tom McCallum wrote:
>> Hi everyone,
>
> Hi Tom,
>
> Would this snippet work:
>
> fo
Hi,
Does anyone know how I can retrieve a function name, for example
If I have a function f as follows:
f <- function( myfunc ) {
print( name_of(myfunc) );
}
I want to know what I should have as "name_of" such that I could call this
with :
f( median )
and it would print "media
Hi,
I need to collapse a list into a string and then reparse it back into the
list. Normally when I need to do this I simply use write.csv and
read.csv, but I need to do this in memory within R rather than writing out
to file. Are there any bespoke commands that any knows of that does
so
On Wed, 15 Nov 2006 05:00:28 -, Prof Brian Ripley
<[EMAIL PROTECTED]> wrote:
> On Tue, 14 Nov 2006, Vladimir Dergachev wrote:
>
>> On Tuesday 14 November 2006 12:28 pm, Prof Brian Ripley wrote:
>>> This approach won't work in very many cases (but then nor will
>>> write.csv).
>>>
>>> The s
Hi,
I have been studying the R manual on lists but cannot seem to create a
simple R list in C - I keep on getting "'dimnames' applied to non-array"
whenever I attempt to assign names to the list elements:
Wanted output a list structure something like
[ type="Bid", price=2.0, volume=10
Thank you so much!! - that works now.
Tom
On Fri, 17 Nov 2006 14:40:38 -, Roger Bivand <[EMAIL PROTECTED]>
wrote:
> On Fri, 17 Nov 2006, Tom McCallum wrote:
>
>> Hi,
>>
>> I have been studying the R manual on lists but cannot seem to create a
>> si
After getting one list done, I am now struggling to form a data frame in C.
I tried to do a list of lists which gives me :
$
$[[1]]
[1] "BID"
$[[2]]
[1] 0.6718
$[[3]]
[1] 3e+06
$
$[[1]]
[1] "BID"
$[[2]]
[1] 0.6717
$[[3]]
[1] 5e+06
$
$[[1]]
[1] "BID"
$[[2]]
[1] 0.6717
$[[3]]
[1] 1720
:56 -, Tom McCallum
<[EMAIL PROTECTED]> wrote:
> Hi everyone,
>
> Now I know there is information on this in the help files - which I have
> read. I am very close to implementing this but can't quite get how to
> remove this final hurdle.
>
> I have a DL
Hi everyone,
Have been trying to include windows.h (from MinGW) and R.h into a package
and have found that Ralloc is coming up as a clash no matter which include
ordering I use. In windows it has 2 arguments and is defined in objidl.h
and in R.h it is 3 arguments. Any ideas of how to work
u know about defining WIN32_LEAN_AND_MEAN when including
> windows.h? If not, it is worth finding out about.
>
>
> On Wed, 22 Nov 2006, Tom McCallum wrote:
>
>> Hi everyone,
>>
>> Have been trying to include windows.h (from MinGW) and R.h into a
>&g
This *is* documented in 'Writing R Extensions'.
>
> On Thu, 23 Nov 2006, Tom McCallum wrote:
>
>> Thank you for your reply. My mistake - I meant Realloc (missed the
>> 'e').
>> This morning I reinstalled MinGW with all the patches suggested by the
>
documented in 'Writing R Extensions'.
>
> That was the general intention, but seems not to cover this example.
> Howver,
>
> #include
> #undef Realloc
> #define R_Realloc(p,n,t) (t *) R_chk_realloc( (void *)(p), (size_t)((n)
> * sizeof(t)) )
> #include
>
Hi,
I am not sure if this is just me using R (R-2.3.1 and R-2.4.0) in the
wrong way or if there is a more serious bug. I was having problems
getting some calculations to add up so I ran the following tests:
> (2.34567 - 2.0) == 0.34567 <--- should be true
[1] FALSE
> (2.23-2.00) == 0
Many thanks for pointing that out.
Tom
On Sat, 09 Dec 2006 13:48:06 -, Peter Dalgaard
<[EMAIL PROTECTED]> wrote:
> Tom McCallum wrote:
>> Hi,
>>
>> I am not sure if this is just me using R (R-2.3.1 and R-2.4.0) in the
>> wrong way or if there is
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