Thanks for the points Dale. As I said, it would be more of a Rcpp exercise than anything. It could potentially be useful for others but it was just curiosity and a small side project.
Regards, Charles On Wed, May 27, 2015 at 8:45 AM, Dale Smith <dsm...@nexidia.com> wrote: > 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 > > [image: > 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 > > [image: > http://host.msgapp.com/Extranet/96621/Signature%20Images/sig%20Blog.jpeg] > <http://blog.nexidia.com/> [image: > http://host.msgapp.com/Extranet/96621/Signature%20Images/sig%20LinkedIn.jpeg] > <https://www.linkedin.com/company/nexidia> [image: > http://host.msgapp.com/Extranet/96621/Signature%20Images/sig%20Google.jpeg] > <https://plus.google.com/u/0/107921893643164441840/posts> [image: > http://host.msgapp.com/Extranet/96621/Signature%20Images/sig%20twitter.jpeg] > <https://twitter.com/Nexidia> [image: > 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> 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 > > >
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