Tags: appears, atworking, error, favorite, matlab, message, perusal, precision, programming, singular, solve, working
Singular at Working Precision
From my perusal of this list, it appears that "Singular at
Working Precision" seems to be the favorite error message.
I am trying to solve a set of ill-specified equations Ax =
B, where A is
3. Full rank, and
4. Positive semidefinite
x = A\B gives me the dreaded "Singular at Working Precision"
Solving via chol() and backsubstitution seems to run out of
memory since A is large (nxn, n~200,000). Any suggestions?
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- 1 Comments
- "John Smith" <spamalot.matlab.questionfor.info.jhu.edu> wrote in message
> x = A\B gives me the dreaded "Singular at Working Precision"
What bother you? The warning message or the unsatisfied
solution x? If it's the later please elaborate.
Bruno#1; Mon, 19 May 2008 00:43:00 GMT