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 > > If anyone has an idea about this, I would really appreciate your hints. > > Thanks! > Werner > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. David Winsemius Alameda, CA, USA ______________________________________________ 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.
