On 25 April 2014 20:15, David Winsemius <dwinsem...@comcast.net> wrote: > > On Apr 25, 2014, at 9:17 AM, Werner W. wrote: > >> Dear Rs, >> >> I am re-executing some older code. It does work in the ancient R 2.12.0 >> which I still have on my PC but with the new version R 3.1.0 it does not >> work any more (but some other new stuff, which won't work with 2.12). >> >> The problem arises in context with the systemfit package using the matrix >> package. In R 3.1.0 the following error is thrown: >> Error in as.matrix(solve(W, tol = solvetol)[1:ncol(xMat), 1:ncol(xMat)]) : >> error in evaluating the argument 'x' in selecting a method for function >> 'as.matrix': Error in .solve.sparse.dgC(as(a, "dgCMatrix"), b = b, tol = >> tol) : LU computationally singular: ratio of extreme entries in |diag(U)| = >> 7.012e-39 >> >> However, I have no clue what I can do about this. Was there some change in >> the defaults of the matrix package? I couldn't find anything apparent in the >> changelog. As the same code works in R 2.12.0, I suppose that the problem is >> not my data. > > You have not told us what version of the Matrix package you were using. > As such I would suggest that you review the Changelog which is a link > for the CRAN page for pkg:Matrix and go back 4 years or so since R > major versions change about once a year. > > http://cran.r-project.org/web/packages/Matrix/ChangeLog
In addition, please provide a minimal, self-contained, reproducible example. Best, Arne -- Arne Henningsen http://www.arne-henningsen.name ______________________________________________ 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.