XSLPscaling
XSLPscaling |
Purpose
Analyze the current matrix for largest/smallest coefficients and ratios
Synopsis
int XPRS_CC XSLPscaling(XSLPprob Prob);
Argument
Prob
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The current SLP problem.
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Example
The following example analyzes the matrix
XSLPscaling(Prob);
Further information
The current matrix (including augmentation if it has been carried out) is scanned for the absolute and relative sizes of elements. The following information is reported:
- Largest and smallest elements in the matrix;
- Counts of the ranges of row ratios in powers of 10 (e.g. number of rows with ratio between 1.0E+01 and 1.0E+02);
- List of the rows (with largest and smallest elements) which appear in the highest range;
- Counts of the ranges of column ratios in powers of 10 (e.g. number of columns with ratio between 1.0E+01 and 1.0E+02);
- List of the columns (with largest and smallest elements) which appear in the highest range;
- Element ranges in powers of 10 (e.g. number of elements between 1.0E+01 and 1.0E+02).
Where any of the reported items (largest or smallest element in the matrix or any reported row or column element) is in a penalty error vector, the results are repeated, excluding all penalty error vectors.