[Rcpp-devel] RcppArmadillo error

[Abhisek]

Hi Dirk,

Just so that I understand.  I copied the code in the RcppArmadillo section
on your website and pasted and saved it.  Are you saying I should change
#include <RcppArmadillo> to #include <Rcpp> and #include <armadillo> ?

best,
abhisek

On Fri, Mar 26, 2010 at 1:40 PM, Dirk Eddelbuettel <edd at debian.org> wrote:

>
> Hi Abhisek,
>
> On 26 March 2010 at 12:28, Abhisek wrote:
> | I downloaded the stuff just last friday so it should be the latest
> version
> | of Rcpp as well as Armadillo.  I used install.packages() for Rcpp and
> | RcppArmadillo.  Armadillo is 0.9.4.  Im using xubuntu karmic koala.
>
> Ok, that is all good.  And if RcppArmadillo installed you have proper
> libraries, Armadillo included.
>
> I think part of your problem is a misunderstanding of an issue we may not
> have made particularly clear:  You can't just look at FastLM() and think
> your code will run like it.  RcppArmadillo __does not export its classes__.
> It is an implementation reference -- it gives you guidance as to how to
> implement C++ packages of your own against other libraries.
>
> If you "just" want to use Armadillo and have Rcpp help you, look at the
> installed example 'FastLM' in the Rcpp package.  In other words ignore
> RcppArmadillo for now.
>
> The example (in 0.7.10) uses an idiom we no longer like and I am about to
> change that for an upcoming 0.7.11 release, but it should works as is and
> just use inline -- so no messing with makefile etc.
>
> Try that and see how it goes and keep us posted.
>
> Cheers, Dirk
>
>
> | i also had some problem using Armadillo which I posted on the Armadillo
> | discussion board.  Conrad got back to me.  Here is the discussion:
> | https://sourceforge.net/apps/phpbb/arma/viewtopic.php?f=1&t=4
> |
> | so it may be that armadillo is the problem but im really not sure.
> |
> | Many thanks
> | Abhisek
> |
> | On Fri, Mar 26, 2010 at 12:17 PM, Dirk Eddelbuettel <edd at debian.org>
> wrote:
> |
> | >
> | > (resending, this time to list I omitted last time, sorry. --Dirk)
> | >
> | > On 26 March 2010 at 11:10, Abhisek wrote:
> | > | Hi,
> | > |
> | > | Ive been trying to make RcppArmadillo work using the example file
> | > (fastLM).
> | > | I copied and pasted the code and saved it as RcppArmadilloEg.cpp (not
> to
> | > use
> | > | fastLM but to figure out how to work RcppArmadillo).  Then i tried
> using
> | > the
> | > | command R CMD SHLIB RcppArmadilloEg.cpp but an error came up saying
> that
> | > | RcppArmadillo.h not found.
> | > |
> | > | So i tried doing a symbolic link from /usr/local/include to the
> directory
> | > | where RcppArmadillo.h and RcppArmadilloDefines.h is stored.  I also
> did a
> | > | symbolic link analogously for RcppArmadillo.so.  When i ran R CMD
> SHLIB
> | > | again I got the following error:
> | > |
> | > | abhisek at shieks:~/Desktop/Personal/Test$ R CMD SHLIB
> RcppArmadilloEg.cpp
> | > | g++ -I/usr/share/R/include
> | > | -I/home/abhisek/R/i486-pc-linux-gnu-library/2.10/Rcpp/lib -fpic  -g
> -O2
> | > -c
> | > | RcppArmadilloEg.cpp -o RcppArmadilloEg.o
> | >
> | > So far so good:  one -I for R as usual, one for Rcpp.
> | >
> | > | In file included from
> | > |
> /home/abhisek/R/i486-pc-linux-gnu-library/2.10/Rcpp/lib/RcppCommon.h:215,
> | > |                  from
> | > | /home/abhisek/R/i486-pc-linux-gnu-library/2.10/Rcpp/lib/Rcpp.h:28,
> | > |                  from RcppArmadilloEg.cpp:1:
> | > |
> | >
> /home/abhisek/R/i486-pc-linux-gnu-library/2.10/Rcpp/lib/Rcpp/internal/wrap.h:
> | > | In function ‘SEXPREC*
> | > Rcpp::internal::wrap_dispatch_unknown_iterable(const
> | > | T&, Rcpp::traits::false_type) [with T = arma::Col<double>]’:
> | > |
> | >
> /home/abhisek/R/i486-pc-linux-gnu-library/2.10/Rcpp/lib/Rcpp/internal/wrap.h:491:
> | > | instantiated from ‘SEXPREC*
> Rcpp::internal::wrap_dispatch_unknown(const
> | > T&,
> | > | Rcpp::traits::false_type) [with T = arma::Col<double>]’
> | > |
> | >
> /home/abhisek/R/i486-pc-linux-gnu-library/2.10/Rcpp/lib/Rcpp/internal/wrap.h:509:
> | > | instantiated from ‘SEXPREC*
> | > | Rcpp::internal::wrap_dispatch_unknown_importable(const T&,
> | > | Rcpp::traits::false_type) [with T = arma::Col<double>]’
> | > |
> | >
> /home/abhisek/R/i486-pc-linux-gnu-library/2.10/Rcpp/lib/Rcpp/internal/wrap.h:526:
> | > | instantiated from ‘SEXPREC* Rcpp::internal::wrap_dispatch(const T&,
> | > | Rcpp::traits::wrap_type_unknown_tag) [with T = arma::Col<double>]’
> | > |
> | >
> /home/abhisek/R/i486-pc-linux-gnu-library/2.10/Rcpp/lib/Rcpp/internal/wrap.h:541:
> | > | instantiated from ‘SEXPREC* Rcpp::wrap(const T&) [with T =
> | > | arma::Col<double>]’
> | > |
> /home/abhisek/R/i486-pc-linux-gnu-library/2.10/Rcpp/lib/Rcpp/Named.h:54:
> | > | instantiated from ‘Rcpp::Named::Named(const std::string&, const T&)
> [with
> | > T
> | > | = arma::colvec]’
> | > | RcppArmadilloEg.cpp:19:   instantiated from here
> | > |
> | >
> /home/abhisek/R/i486-pc-linux-gnu-library/2.10/Rcpp/lib/Rcpp/internal/wrap.h:394:
> | > | error: cannot convert ‘const arma::Col<double>’ to ‘SEXPREC*’ in
> | > | initialization
> | > | make: *** [RcppArmadilloEg.o] Error 1
> | > |
> | > |
> | > | could someone provide some advice?
> | >
> | > Which Rcpp version do you have installed?
> | >
> | > Which Armadillo version do you have installed?
> | >
> | > I have not tried the free-floating direct compile you try here.  Maybe
> the
> | > defines for RcppArmadillo that we use are missing here -- hard to say.
> | >
> | > Could you try to create your own little package but copying the
> | > RcppArmadillo
> | > files, changes DESCRIPTION to what you do and changes the FastLM code
> in
> | > C++
> | > and R?
> | >
> | > Dirk
> | >
> | > --
> | >  Registration is open for the 2nd International conference R / Finance
> 2010
> | >  See http://www.RinFinance.com for details, and see you in Chicago in
> | > April!
> | >
>
> --
>   Registration is open for the 2nd International conference R / Finance
> 2010
>  See http://www.RinFinance.com for details, and see you in Chicago in
> April!
>
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