Dale - Thank you for the suggestion. I have MATLAB and the MATLAB libraries, and I am not looking to redistribute anything. I just have a lot of data in MAT files that I would like to be able to load analyze in R. I am able to compile and link against the MATLAB libraries, but the code crashes when I run it. I looked into the Octave FAQ. It looks like they don't handle v7.3 files either, and I don't think they provide an API that I could access from R/C++.
- Elliot On Wed, Mar 25, 2015 at 8:36 AM, Dale Smith <dsm...@nexidia.com> wrote: > mat.h is a header file which comes with MATLAB. I don't think the license > allows redistribution, and you would not be able to compile without the > MATLAB libraries. > > An alternative may be Octave since it will read .mat files. Perhaps > someone can email the name of the header file used from the Octave > distribution? > > > http://stackoverflow.com/questions/9915658/how-do-you-open-mat-files-in-octave > > This also offers a viable way to test this type of code for those who > don't have MATLAB. > > Dale Smith, Ph.D. | Data Scientist | nexidia | office: +1 404 495 7220 > ext 4008 | fax: +1 404 495 7221 | nexidia.com > > > -----Original Message----- > From: rcpp-devel-boun...@lists.r-forge.r-project.org [mailto: > rcpp-devel-boun...@lists.r-forge.r-project.org] On Behalf Of Christian > Gunning > Sent: Wednesday, March 25, 2015 8:08 AM > To: rcpp-devel@lists.r-forge.r-project.org > Subject: [Rcpp-devel] R.e. Using Rcpp and MATLAB MAT-File API to Read MAT > Files > > Can you provide a link to the mat.h file referenced in the source (which I > assume is the same as the API mentioned below)? > > Also, see Dirk's comments about compilers here: > http://stackoverflow.com/questions/10723165/using-visual-c-with-r > and here: > dirk.eddelbuettel.com/code/rcpp/Rcpp-FAQ.pdf > > Best, > Christian > > > I'm trying to use the MATLAB Mat-File API to read data from MAT files > > into R. (I've tried using the R.matlab package, but the matrices I'm > > loading can be very large, and that method was too slow. In addition, > > some of the files I'm loading are v7.3 MAT files, which are not > > supported by the package.) I wrote the following simple function to > > start testing. It works fine if I compile without the Rcpp parts in > > Visual Studio (i.e. I can call matOpen and get a nonzero pointer), but > > when I run in R it crashes my R session without displaying "Test". > > > > #include <Rcpp.h> > > #include "mat.h" > > > > using namespace Rcpp; > > > > // [[Rcpp::export]] > > NumericVector rcpp_mat_load() { > > > > MATFile* mf = matOpen("z:/temp/test.mat", "r"); > > printf("Test\n"); > > double val = 10; > > NumericVector y = NumericVector::create(val); > > return y; > > } > > -- > A man, a plan, a cat, a ham, a yak, a yam, a hat, a canal – Panama! > _______________________________________________ > Rcpp-devel mailing list > Rcpp-devel@lists.r-forge.r-project.org > https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel > _______________________________________________ > Rcpp-devel mailing list > Rcpp-devel@lists.r-forge.r-project.org > https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
_______________________________________________ Rcpp-devel mailing list Rcpp-devel@lists.r-forge.r-project.org https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
