Before you undertake any work on ublas, I would read the FAQ carefully. There have been no significant commits since 2009.
http://www.boost.org/doc/libs/1_58_0/libs/numeric/ublas/doc/index.html “Performance? There are faster alternatives. Cutting edge? uBLAS is more than 10 years old and missed all new stuff from C++11.” Dale Smith, Ph.D. Data Scientist [http://host.msgapp.com/Extranet/96621/Signature%20Images/sig%20logo.png]<http://nexidia.com/> d. 404.495.7220 x 4008 f. 404.795.7221 Nexidia Corporate | 3565 Piedmont Road, Building Two, Suite 400 | Atlanta, GA 30305 [http://host.msgapp.com/Extranet/96621/Signature%20Images/sig%20Blog.jpeg]<http://blog.nexidia.com/> [http://host.msgapp.com/Extranet/96621/Signature%20Images/sig%20LinkedIn.jpeg] <https://www.linkedin.com/company/nexidia> [http://host.msgapp.com/Extranet/96621/Signature%20Images/sig%20Google.jpeg] <https://plus.google.com/u/0/107921893643164441840/posts> [http://host.msgapp.com/Extranet/96621/Signature%20Images/sig%20twitter.jpeg] <https://twitter.com/Nexidia> [http://host.msgapp.com/Extranet/96621/Signature%20Images/sig%20Youtube.jpeg] <https://www.youtube.com/user/NexidiaTV> From: rcpp-devel-boun...@lists.r-forge.r-project.org [mailto:rcpp-devel-boun...@lists.r-forge.r-project.org] On Behalf Of Charles Determan Sent: Wednesday, May 27, 2015 8:10 AM To: Dirk Eddelbuettel Cc: rcpp-devel@lists.r-forge.r-project.org Subject: Re: [Rcpp-devel] Convert R matrix to boost ublas? This was more of a curiosity question. Armadillo and Eigen are great and I will likely use them for most of my purposes. I have just been exploring more of the boost library and was wondering about it. That said, it would be a potentially useful exercise for me when I have some more time to devote to it. You mention starting with the as<>() and wrap() converters. Is there any documentation on developing additional Rcpp functions or should I just go in to the source and try to find my way around? Regards, Charles On Tue, May 26, 2015 at 4:00 PM, Dirk Eddelbuettel <e...@debian.org<mailto:e...@debian.org>> wrote: On 26 May 2015 at 15:32, Charles Determan wrote: | I have seen in the archives a discussion of converting a boost ublas matrix to | Rcpp (http://lists.r-forge.r-project.org/pipermail/rcpp-devel/2011-June/ | 002402.html) but I didn't see anything about passing an R matrix in to a ublas | object. There doesn't appear to be an 'as' method for it (unless I have | somehow overlooked it). Any recommendations on efficiently getting an R matrix | in to a boost ublas matrix? Correct, as far as Rcpp is concerned uBlas is 'a new external entity' so you would have to start with as<>() and wrap() converters. Almost everybody I talked to about ublas "is aware" of it, yet nobody seems to like it all that much. Any reason Armadillo or Eigen won't do for you? Dirk -- http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org<mailto:e...@debian.org>
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