TSparseMtx.SparseToBanded Method

Convert sparse matrix to banded matrix.

Pascal

procedure SparseToBanded(const Dst: TMtx; MaxElemCount: integer = 10000000);

Convert calling matrix, stored in HB sparse matrix format, to banded matrix format. The result (banded matrix format) is stored in Dst matrix. The size and complex properties of Dst matrix are adjusted automatically.

See Also

BandedToSparse

Example

Step 1: construct banded matrix

var subDiag, SupDiag,MainDiag: Vector; A: Matrix; begin SubDiag.Size(4); SuperDiag.Size(4); MainDiag.Size(4); A.Size(3,4); A.SubDiag := 1; // one subdiagonal A.SuperDiag := 1; // one superdiagonal SubDiag.SetIt([0,1,3,2]); SupDiag.SetIt([-1,2,7,0]); MainDiag.SetIt([2,3,5,1]); A.SetRow(SupDiag,0); A.SetRow(MainDiag,1); A.SetRow(SubDiag,2); end;

Step 2: convert banded matrix to sparse matrix:

SparseA.BandedToSparse(A); end;

TSparseMtx Class, TSparseMtx Members, Sparse Namespace, public, Example, See Also

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