[R] help needed with LU decomposition: problem with sparse

From: Samuel Le <Samuel.Le_at_srlglobal.com>
Date: Thu, 28 Apr 2011 16:17:10 +0000


Dear all,

I have a problem with the function lu to do LU decomposition: it seems that the algorithm multiplies the matrix I input by a permutation matrix for efficiency reasons -hence the sparse in the output. Does someone know whether it is possible to specify not to use any permutation matrix?

Thanks,

Samuel

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