Displaying 20 results from an estimated 1000 matches similar to: "Calling C++ from R"
2008 Apr 03
2
g++ 4.3 warning: deprecated conversion from string constant to ‘char*’
Hello,
I've noticed that with g++ 4.3 I get the following "warning: deprecated
conversion from string constant to ?char*?" when I call e.g.,
Rprintf("Hello world"); or when I try to define a const char e.g., char
lower = 'L';
I am wrapping the c++ code in extern "C" {}. This seems to be something
new with g++ 4.3, because the same code compiled
2004 Feb 17
2
interfacing C++ using .Call
Hi folks,
I apologise if this is in the documentation somewhere, but I can't
seem to find it. I also did a search of CRAN without any success. I'm
using R-1.8.1 (pre-compiled) on Windows 2000 with Rtools and mingw 2.0.0
(which includes gcc/g++ 3.2).
I'm trying to link some C++ code from another application to R using the
.Call interface and am experiencing some problems. I was
2005 Apr 25
1
Failed to install gbm_1.4-2 (PR#7814)
Full_Name: The Manager
Version: 2.0.1
OS: Solaris 9
Submission from: (NULL) (129.67.80.243)
> install.packages("gbm")
trying URL `http://cran.uk.r-project.org/src/contrib/PACKAGES'
Content type `text/plain; charset=ISO-8859-1' length 52975 bytes
opened URL
==================================================
downloaded 51Kb
trying URL
2010 May 04
1
errors when installing rjags
Hi,
With the sid package jags (2.0.0-1) and r-base-core (2.11.0-1), I cannot
install package rjags anymore (this used to work at some point; can't
recall exactly at what R/JAGS versions):
---<--------------------cut here---------------start------------------->---
R> install.packages("rjags", configure.args="--with-jags-modules=/usr/lib/JAGS/modules-2.0.0")
2011 Aug 13
1
Latent flaw in SEXPREC definition
There seems to be a latent flaw in the definition of struct SEXPREC
in Rinternals.h, which likely doesn't cause problems now, but could
if the relative sizes of data types changes.
The SEXPREC structure contains a union that includes a primsxp,
symsxp, etc, but not a vecsxp. However, in allocVector in memory.c,
zero-length vectors are allocated using allocSExpNonCons, which
appears to
2010 Dec 03
1
Error using Rcpp under windows xp
Hi,
I am a newbie to Rcpp packages, and got problems in having basic set-ups for
Rcpp under windows xp. Here is the list I have done.
1) installed Rtools and have no problem in compiling .c file.
2) installed Rcpp packages
3) set enviroment variables 'path' to make C:\Program
Files\R\R-2.12.0\library\Rcpp\include\ searchable
The sample C++ code I used is from the original website:
2017 Mar 29
2
Transferring ownership of R-managed buffer
http://www.keittlab.org/
On Wed, Mar 29, 2017 at 1:04 PM, Herv? Pag?s <hpages at fredhutch.org> wrote:
> Hi Tim,
>
> On 03/29/2017 08:24 AM, Tim Keitt wrote:
>
>> I have a use case where I would like to create an SEXP around an existing
>> buffer that is managed by R, thus avoiding a copy operation.
>>
>
> What to you mean exactly by "an existing
2009 Jan 05
1
can't get names of R_env
Hi,
I'm quite knew in R, so I might not have the R specific jargon.
But here is my problem,
I'm trying to access and use variabels given by a function environment,
more specifically the rho in do_optim in src/main/optim.c
According to the documentation
http://cran.r-project.org/doc/manuals/R-ints.html#The-_0027data_0027
the envsxp is defined as a tagged pairlist.
"ENVSXP: Pointers
2012 May 03
1
Setting up a windows system for rcpp
I am running into a wall getting my system to work with rcpp and inline.
Following Dirk's advice on stackoverflow, I hope someone is able to help
me.
My steps were to install MinGW 32 bit first, then installing Rtools, I
disabled MinGW's entry in the PATH.
I am trying to get the following code to work:
library(Rcpp)
library(inline)
body <- '
NumericVector xx(x);
return wrap(
2008 Mar 11
1
Rtools and GCC4 problem
>>
I am trying to compile rseries from Whit Armstrong and a colleague of mine found
a problem with using GCC4
I get the following error when compiling rseries
g++-sjlj -Ic:/R/include -O2 -Wall -c Rutils.cpp -o Rutils.o
Rutils.cpp: In function 'double* getColPointer(SEXPREC*, int)':
Rutils.cpp:406: warning: deprecated conversion from string constant to 'char*'
2010 Mar 25
1
Error using Rcpp
Hi, Im not sure if this is the right place to post this. I am using Xubuntu
Karmic Koala and am trying to use the Rcpp package. I am testing it using a
simple code that takes in a vector and adds 1 to each element:
#include <Rcpp.h>
// This file takes in a vector and adds one to each entry
RcppExport SEXP addone(SEXP vec){
// create a local copy of vec
Rcpp::NumericVector
2013 May 14
2
invalid operands of types ‘SEXPREC*’ and ‘R_len_t’ to binary ‘operator/’ with Rcpp.
Dear R-Developers,
I just started learning how to use Rcpp. Earlier while using it, I
encountered an error as shown below:
file74d8254b96d4.cpp: In function ‘Rcpp::NumericVector
foo(Rcpp::NumericVector, Rcpp::NumericVector, Rcpp::NumericVector,
Rcpp::Function, Rcpp::Function)’:
file74d8254b96d4.cpp:10: error: invalid operands of types ‘SEXPREC*’ and
‘R_len_t’ to binary ‘operator/’
make: ***
2009 Dec 13
1
How to resolve include Rcpp.h problems?
Hi,
I am Linux Ubuntu 9.04 user. I'm using R-2.6.
Actually, I am developing R package for reading/writing 3D images. I needed
to use the R package Rcpp in order to make profit of available C/C++ codes.
My problem is that my C code is not able to include the Rcpp.h
In fact, when I run this command R CMD build rply, I got the following error
message in the file
2009 Oct 26
2
R CMD check: Error in .C
Function/file names are hypothetical. Say I have written myfunction.R,
which calls myfunction.c via .C("myfunction", ...).
I've compiled successfully myfunction.c via R CMD SHLIB myfunction.c
in the terminal. Then, in the R console:
dyn.load("myfunction.so")
source("myfunction.R")
test <- myfunction() # works fine
So everything is in order, myfunction works
2018 Mar 14
0
R crashing with a segmentation fault: how to locate the cause
I have a littler script which is crashing with a segmentation fault.
I tried to find out why by running it through valgrind, which produced the
output below.
I am not sure how to proceed from here (other than binary search with print
statements).
Any help would be appreciated.
Thanks,
Eric
==12589== Invalid read of size 1
==12589== at 0x4C2F1B1: strcmp (in
2012 Nov 23
1
Adding a function with default parameters into the Rcmdr menu
Hi everyone,
I made some tests with Rcmdr, to add a function with default parameters :
For example (very simple):
myfunction<-function(var="314"){
print("hello")
print(var)
}
if I run myfunction() directly i see :
> myfunction()
[1] "hello"
[1] "314"
it's ok.
But if i edit de Rcmdr-menu.txt (in
2009 Jun 03
1
Using constrOptim() function
I have a function myFunction(beta,x) where beta is a vector of coefficients
and x is a data frame (think of it as a matrix). I want to optimize the
function myFunction() by ONLY changing beta, i.e. x stays constant, with 4
constraints. I have the following code (with a separate source file for the
function):
rm(list=ls())
source('mySourceFile')
2017 Feb 22
0
Crash in the latest release
I found this by accident yesterday. The program that crashes is the first two lines of
the example from the help page for nlmer. That example hasn't changed in a long time, so I
assumed that it is an R-devel issue. It could also be a long latent nlmer bug. The second
run with valgrind is puzzling.
Terry T.
> library(lmer)
> sessionInfo()
R Under development (unstable)
2017 Feb 22
0
[Lme4-authors] Crash in the latest release
Thanks, posted to https://github.com/lme4/lme4/issues/412 for further
discussion ...
On Wed, Feb 22, 2017 at 10:03 AM, Therneau, Terry M., Ph.D.
<therneau at mayo.edu> wrote:
> I found this by accident yesterday. The program that crashes is the first
> two lines of the example from the help page for nlmer. That example hasn't
> changed in a long time, so I assumed that it is
2012 Mar 13
2
beginner's loop issue
Dear All,
I hope you don't mind helping me with this small issue. I haven't been using
R in years and I'm trying to fill in a matrix
with the output of a function (I'm probably using the Matlab logic here and
it's not working).
Here is my code:
for (i in 1:length(input)){
out[i,1:3] <- MyFunction(input[i,1],input[i,2], input[i,3])
out[i,4:6] <-