From: Simon Urbanek <simon.urba...@r-project.org>
Subject: Re: [Rd] for help on building a R package with several R
function and a bunch of c, c++
To: alex46...@yahoo.com
Cc: "Romain Francois" <rom...@r-enthusiasts.com>, r-devel@r-project.org
, "Dirk Eddelbuettel" <e...@debian.org>
Date: Monday, March 8, 2010, 12:53 PM
Alex,
On Mar 8, 2010, at 12:16 , alex46...@yahoo.com
wrote:
I built R package with only R code before, this is
first time I build R package with mixed R code and C, C++
code. I would try Rcpp on our center UNIX, before I ask the
administrator to install it, I need confirm several issue
are right. Thank you for you patient.
1, I change main function as a general function with
certain name such as void tranptest(char* filename[],
double* para[]), and copy this file and other related c,
c++ h, program to /src, and removed makefile.
Yes, that's perfect - for the kind of usage you don't need
Rcpp at all - R supports C++ sources out of the box. Just
make sure your tranptest function is either in a .c file or
you put
extern "C"
in front of it if it's in .cpp , e.g:
foo.cpp:
extern "C" void tranptest(char **fn, double *par) {
...
}
2, I noticed there is Makevars after I ran
Rcpp.package.skeleton,
do I need modify this file before I run R CMD build?
what I need do for rcpp_hello_world.cpp
rcpp_hello_world.cpp? it is template file handled by the
program or it is for me to edit it as template?
3, Do I need write a R function such as
tranptest<-function(inputfile, ctlfile,outfile,
param1,param2,param3)
{
filenames<-c(inputfile,ctlfile,outfile)
params<-as.vector(c(param1, param2,param3))
.C("tranptest",
as.character(filenames),as.double(params))
}
before I run R CMD build? if so, that means I put this
R function in /R?
yes, in R/foo.R (replace "foo" by any name you want)
4, Do I need do anything to run library.dyname to load
those complied objects?
If you have a namespace just add
useDynLib(foo)
where "foo" is the name of your package. If you don't have
a namespace (or don't kwno what that is ;)) just add a file
R/zzz.R with the following content to your package:
.First.lib <- function(libname, pkgname)
library.dynam("foo", pkgname, libname)
where "foo" is the name of your package.
Where I can make sure it successful and I can use
.C("tranptest",....) in R before the wholepackage
installed?
It's really simple - you don't need to install the package
to test it. Assuming "foo" is the name of your package:
Build the sources:
R CMD SHLIB -o foo.so *.c*
start R in the same directory:
R
# load the library you just compiled
dyn.load("foo.so")
# test your code
.C("tranptest", c("file1", "file2"), as.double(1,2,3,4))
Cheers,
Simon
Alex
--- On Mon, 3/8/10, Romain Francois <rom...@r-enthusiasts.com>
wrote:
From: Romain Francois <rom...@r-enthusiasts.com>
Subject: Re: [Rd] for help on building a R package
with several R function and a bunch of c, c++
To: alex46...@yahoo.com
Cc: r-devel@r-project.org,
"Dirk Eddelbuettel" <e...@debian.org>
Date: Monday, March 8, 2010, 2:47 AM
Hi,
Yes, the problem is with spaces in path names.
This has
been fixed and
will appear as Rcpp 0.7.8 in a few days.
If you are in a rush, you can build it from svn,
or quote
the path that
is returned from CxxFlags.
Feel free to get back to us with more questions,
although
I'd encourage
you to use the dedicated Rcpp-devel mailing list
:
https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
Romain
On 03/08/2010 04:20 AM, alex46...@yahoo.com
wrote:
Thank you for your help. So far what I
did on
my notebook as follows. My OS is windows7.
Â
I downloaded Rcpp windows version, and load
library("Rcpp") then.
Â
1, Change main funnction to f1.cpp, remove
makefile.
2 ,run
Rcpp.package.skeleton(name="test",list=c("rec1.R","rect2.R"))
3, edit  /man, /R, copied my exist fileÂ
whch I
have done sucessfully without any c++
program
before.
4, copy f1.cpp and all other related
cpp and c
into /src/
5. Rcmd build --binary test
Â
It showed------
Â
making DLL....
gcc
-l“C:/PROGRA~2/R/R-210~1.1/include",“C:/PROGRA~2/R/R-210~1.1/
bin/Rscript
-e' Rcpp:::CxxxFlags<>'` -03 -Wall -std =gnu
-999 -c
cranbombind.c -o cranbombind.o
Â
gcc.exe:
**\Documents/R/win-library/2.10/Rcpp/lib: No
such file or directory...
I checked the path, it did have C:\Users\alex
**\Documents\R\win-library\2.10\Rcpp\lib
Â
I don't know how I can fix the problem. do you
think
it could be problem there is a space between my
first name
and last name..
Â
All I tried are on my own PC at home , I
will tryon
other  PC in my office.
Â
Do you have suggestion?. Thanks,
Â
Alex
--- On Sun, 3/7/10, Romain Francois<rom...@r-enthusiasts.com>
wrote:
From: Romain Francois<rom...@r-enthusiasts.com>
Subject: Re: [Rd] for help on building a R
package
with several R function and a bunch of c, c++
To: alex46...@yahoo.com
Cc: "Dirk Eddelbuettel"<e...@debian.org>,
r-devel@r-project.org
Date: Sunday, March 7, 2010, 3:59 AM
On 03/06/2010 03:27 AM, alex46...@yahoo.com
wrote:
I think the first question should be how
to build
a R function to call a bunch of C ,C++ which
include one
main program, and a makefile. My goal to build a R
package
will be next step.
You should jump straight to making a package.
You are
making you life
difficult with this "main program&
makefile"
model.
Install Rcpp and try to use the
Rcpp.package.skeleton,
this will create
a simple package that uses some C++ classes
from Rcpp,
as well as an R
function that calls them.
I read Rcpp , I am not sure ifÂ
RcppResultSet can solve my problem or other
function. Once I
make sure it work I need ask UNIX adminstrator to
install
it.
We don't know what your problem is. We can
answer a
question, but we
cannot guess the question for you.
Rcpp works, please refer to our unit tests,
for
example look at this
vignette:
http://cran.r-project.org/web/packages/Rcpp/vignettes/Rcpp-unitTests.pdf
I think it shouldn't be very
complex, as I
know to build a R function easy with one C
function.
Thanks you for yout attention!
Alex
--- On Fri, 3/5/10, Dirk
Eddelbuettel<e...@debian.org>Â
wrote:
From: Dirk Eddelbuettel<e...@debian.org>
Subject: Re: [Rd] for help on building a R
package
with several R function and a bunch of c, c++
To: alex46...@yahoo.com
Cc: r-devel@r-project.org
Date: Friday, March 5, 2010, 8:25 PM
On 5 March 2010 at 13:15, alex46...@yahoo.com
wrote:
| Hope I can get quick help from here, I
have a
bunch of c, c++ included main function and
makefile. It
works well on both UNIX and windows. I tried to
build R
package which include this C++ program and several
other R
functions. These R function here are
independent of c++ code. I prefer to
define one R
function to call this c++ program (main
function).
|
| I know how to build R package with just
R
function, but I don't know how to handle those c++
c code
after I copied those code in
./src, I am
reading manual "Writing R Extensions" , but I did
n't catch
the key point . Do you know any easy way to do it?
,
When you asked _that exact same question_
this
morning on r-help, you got the
following answer:
    From: Whit
Armstrong<armstrong.w...@gmail.com>
    To: alex46...@yahoo.com
    Cc: r-h...@r-project.org
    Subject: Re: [R] for
help on
building a R package with several R function and a
bunch of
c, c++
    Date: Fri, 5 Mar 2010
10:33:54
-0500
    Pick up Rcpp, make your
life
easier.
    http://dirk.eddelbuettel.com/code/rcpp.html
    -Whit
    On Fri, Mar 5, 2010 at
9:19
AM,<alex46...@yahoo.com>Â
wrote:
   Â> Hope I can
get quick
help from here, I have a bunch of c, c++ included
main
function and makefile. It works well on both UNIX
and
windows. I tried to build R package which include
this C++
program and several other R functions. R
function
here are independent c++ code. I prefer to
define
one R function to call this c++ program.
   Â>
   Â> Do you know
any easy
way to do it? I am reading manual "Writing R
Extensions", I
didn't catch the key point. I know how to build R
package
with just R function, If I put all c++
code and
makefile in /src...what I need do?
   Â>
   Â> Thank you
in
advance!
   Â>
   Â> Alex
Now, can you let us know
   a) what part of
the
answer was unclear to you, and
   b) what made
you think
you needed to repost _the identical question_
here
| Thank you in advance!
You're welcome.
Dirk
--Romain Francois
Professional R Enthusiast
+33(0) 6 28 91 30 30
http://romainfrancois.blog.free.fr
|- http://tr.im/OIXN : raster images and RImageJ
|- http://tr.im/OcQe : Rcpp 0.7.7
`- http://tr.im/O1wO : highlight 0.1-5
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