Thank you very much, Josh! As you suggested, I will contact the developers of "Matrix".
PS, C6 are just initial characters of my email account :-) Best wishes, C6 2011/8/4 Joshua Wiley <jwiley.ps...@gmail.com>: > Hi C6 (were C1 - 5 already taken in your family?), > > I downloaded your data and can replicate your problem. R ceases > responding and terminates. This does not occur with all uses of qr on > a dgCMatrix object. I know nothing about sparse matrices, but if you > believe this should not be occurring, you should contact the package > maintainers. Here is my sessionInfo() (FYI, it would probably be > helpful to report yours also in case the issue is version dependent): > > R Under development (unstable) (2011-07-30 r56564) > Platform: x86_64-pc-mingw32/x64 (64-bit) > > locale: > [1] LC_COLLATE=English_United States.1252 > [2] LC_CTYPE=English_United States.1252 > [3] LC_MONETARY=English_United States.1252 > [4] LC_NUMERIC=C > [5] LC_TIME=English_United States.1252 > > attached base packages: > [1] stats graphics grDevices utils datasets methods base > > other attached packages: > [1] Matrix_0.999375-50 lattice_0.19-30 > > loaded via a namespace (and not attached): > [1] grid_2.14.0 tools_2.14.0 > > Cheers, > > Josh > > On Wed, Aug 3, 2011 at 4:26 PM, C6H5NO2 <c6h5...@gmail.com> wrote: >> Hello R users, >> >> I am trying to give the QR decomposition for a large sparse matrix in >> the format of dgCMatrix. When I run qr function for this matrix, the R >> session simply stops and exits to the shell. >> The matrix is of size 108595x108595, and it has 4866885 non-zeros. I >> did the experiment on windows 7 and linux mint 11 (both 64 bit), and >> the results are the same. >> >> I have uploaded my data file to http://ifile.it/elf2p6z/A.RData . The >> file is 10.681 MB and I hope someone could kindly download it. >> The code to see my problem is: >> library(Matrix) >> load("A.RData") >> B <- qr(A) >> >> Best wishes, >> C6 >> >> ______________________________________________ >> R-help@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. >> > > > > -- > Joshua Wiley > Ph.D. Student, Health Psychology > Programmer Analyst II, ATS Statistical Consulting Group > University of California, Los Angeles > https://joshuawiley.com/ > ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.