Matrix Generator CONDEX | |
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Source: | A.K. Cline and R.K. Rew |
Discipline: | numerical linear algebra |
Language: | Java applet |
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.
Parameters:
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: ]