TSparseMtx.DenseToSparse Method

Summary

Convert dense matrix to sparse matrix format.

Declaration

Procedure DenseToSparse(A: TMtx; ZeroThreshold: TSample = 0);

Description

Convert dense matrix A to modified compressed column sparse matrix format.

See Also
SparseToDense

Step 1: Construct dense matrix

          var A,B: Matrix;
          SparseA: TSparseMtx;
          /// ...
          A.SetIt(3,3,false,[1,0,0,0,2,0,0,1,3]);

Step 2: Convert dense matrix to sparse matrix

          /// ...
          SparseA.DenseToSparse(A);

Step 3: Convert sparse matrix back to dense and compare

          /// ...
          SparseA.SparseToDense(B);
          if not A.Equal(B,1.0e-5) then ERaise('Not Equal!');