TSparseMtx.Value Property

Summary

Allows setting and getting value at position Row and Col.

Declaration

Property Value [Row,Col:integer]: TSample read GetValue write SetValue;

Description

Allows setting and getting value at position Row and Col. This property is to be used to form a new sparse matrix only. See the TripletsToSparseAndFlush method, on how to use this property. This property should not be used to access individual values of a sparse matrix. To access individual values, the following pattern can be used:

          for i := 0 to SparseMtx.Cols-1 do
            for j := SparseMtx.ap[i] to SparseMtx.ap[i+1]-1 do
            begin
              aRow := SparseMtx.ai[j];
              aValue := SparseMtx.Values[j];
              //...       The aValue is stored at i'th column and aRow
              //i'th column values are stored in the Values array from index ap[i] to ap[i+1]
              //the row indices for the i'th column are stored in the Ai array
            end;