|Matrix Generator CONDEX|
|Source:||A.K. Cline and R.K. Rew|
|Discipline:||numerical linear algebra|
|Output format:||Matrix Market format|
This is a Java applet which generates matrices from three ill-conditioned classes. These were posed by Cline and Rew as counter-examples to the condition number estimator used in the LINPACK package. Examples B and C are nearly diagonal, whereas example D is lower triangular matrix with 1s on the diagonal (except the last which is -1) and -1s on the off-diagonals.
This generator was developed by Bruce Miller of NIST based on Nick Higham's Test Matrix Toolbox for MATLAB.
|EXAMPLE||selects one of three examples|
|N||order of the matrix|
|THETA||a linear contribution to elements in Examples B and C|
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Last change in this page: Wed Sep 22 13:34:19 US/Eastern 2004 [Comments: ]