TSparseMtx.UpperTriangle Method

Extract upper part of the Mtx.

Pascal

function UpperTriangle(const Src: TSparseMtx; Diagonal: boolean = false): TSparseMtx; overload;

Copies only the upper triangular part of the Mtx sparse matrix. The result is stored in the calling sparse matrix. If the Diagonal boolean parameter is true then the Mtx matrix main diagonal elements will be copied to the calling matrix main diagonal elements. If the Diagonal parameter is false, the calling matrix main diagonal elements will be set to zero.

See Also

LowerTriangle

Example

var asp, bsp: TSparseMtx; csp, dsp: TSparseMtx; d: Vector; begin // ... // #1 : split asp into lower(bsp), upper(csp) and diagonal(d) sections bsp.LowerTriangle(asp); csp.UpperTriangle(asp); asp.Diag(d); // now combine lower(bsp), upper, and diagonal(d) back dsp.AddSplit(bsp,d,csp); // should be equal if not asp.Equal(dsp) then Eraise('Not Equal!'); end;

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

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