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Format of the sparse matrix file

The first line of a sparse matrix file contains the unique identifier 'SLD_sparse_matrix'. This identifier is used by LoadSparseMat to ensure that the format is correct. The next line contains the number of non-zero elements of the sparse matrix. The next two lines contain the lowest and highest column and row indices. All other lines contain the matrix data using the format [ix,iy]=value. All lines may contain comments separated by double slashes.

The following example shows a small sample matrix :

12 // number of elements in sparse matrix 
2 9 // lowest and highest column 
1 10 // lowest and highest row 

Last Update: 2012-Oct-20