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TSparseMtx.PixelDownSample Method
TSparseMtx Class | TSparseMtx Members | Sparse Namespace | public | Example | See Also
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Reduces dense matrix for screen display (bitmap) to show the non-zero pattern.

Pascal
procedure PixelDownSample(const Dst: TMtx; Pixels: integer = 500; Mode: TPixelDownSample = pdsPattern);
Description

Creates a reduced size Dst dense matrix for screen display (bitmap) to show the non-zero pattern. Pixels parameter defines the target number of pixels to reduce Rows and Cols to. The Mode parameter defines how reduced matrix will be constructed.

See Also
Example
Uses MtxExpr, Sparse, MtxVecTee; var SparseA: TSparseMtx; GridSeries: TMtxGridSeries; v1,v2: Vector; A: Matrix; begin // ... SparseA.Size(7500,4000,4000,false); SparseA.RandomSparse(v1,v2); SparseA.PixelDownSample(A); DrawValues(A,GridSeries); // showing A end;
Vector v1,v2; Matrix A; TSparseMtx *SparseA; // ... SparseA->Size(7500,4000,4000,false); SparseA->RandomSparse(v1,v2); SparseA->PixelDownSample(A); DrawValues(A,GridSeries); // showing A
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