Displaying 6 results from an estimated 6 matches for "20functions".
2004 Feb 01
4
I can't make .C(...) web-page example.
Hi everyone!
I'm trying to lear how to call external C code in R but even the R help
web-page example is drive me crazy.
I copy-paste the example at:
http://stat.ethz.ch/R-manual/R-patched/doc/manual/R-exts.html#Interface%20functions%20.C%20and%20.Fortran
here is the example:
void convolve(double *a, int *na, double *b, int *nb, double *ab)
{
int i, j, nab = *na + *nb - 1;
for(i = 0; i < nab; i++)
ab[i] = 0.0;
for(i = 0; i < *na; i++)
for(j = 0; j < *nb; j++)
ab[i + j] += a[i] * b[j];
}
called f...
2023 Nov 04
1
Adding columns to a tibble based on a value in a different tibble
I think a simple reproducible example ("reprex") may be necessary for you
to get a useful reply. Questions with vague specifications such as yours
often result in going round and round with attempts to clarify what you
mean without a satisfactory answer. Clarification at the outset with a
reprex may save you and others a lot of frustration.
Cheers,
Bert
On Sat, Nov 4, 2023 at 1:41?AM
2004 Aug 06
2
Notes on 1.1.4 Windows. Testing of SSE Intrinics Code and others
Jean-Marc,
Are you sure that you don't need to add just -msse to enable the
intrinsics rather than a full fledged -march=pentium3? I did some playing
around and I can get intrinsics code to compile with -march=i686 -msse on
linux with that.
Check out:
2005 Apr 02
1
Survey of "moving window" statistical functions - still looking f or fast mad function
...167.html>
] [ Replies
<http://tolstoy.newcastle.edu.au/R/help/04/10/5161.html#replies> ]
From: Tuszynski, Jaroslaw W. <JAROSLAW.W.TUSZYNSKI_at_saic.com
<mailto:JAROSLAW.W.TUSZYNSKI_at_saic.com?Subject=Re:%20%5BR%5D%20Survey%
20of%20"moving%20window"%20statistical%20functions%20-%20still
%20lookingf%20or%20fast%20mad%20function> >
Date: Sat 09 Oct 2004 - 06:30:32 EST
Hi,
Lately I run into a problem that my code R code is spending hours
performing simple moving window statistical operations. As a result I
did searched archives for alternative (faster) ways of...
2005 May 19
1
R 2.1.0 RH Linux Built from Source Segmentation Fault
...it
crashes.
I'm looking for some guidance to diagnose this problem so we can
focus on a solution.
Thanks!
Here's the annotated output of a failed job. The source file
bayes_book_r_functions.R comes from Peter Rossi:
http://gsbwww.uchicago.edu/fac/peter.rossi/research/bayes%20book/R%20functions/
The second source file is included below.
R : Copyright 2005, The R Foundation for Statistical Computing
Version 2.1.0 (2005-04-18), ISBN 3-900051-07-0
R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()...
2008 Apr 30
8
Playing with NtQueryInformationFile
Hi all,
I''m trying to get the allocation size of a file via a file handle
(rather than its name). The example below works for FileNameInformation
but I can''t get it to work as expected for FileStandardInformation.
Here''s some sample code:
# query_test.rb
require ''windows/handle''
require ''windows/error''
include Windows::Handle