MatrixInt.Diag Method

MatrixInt Class

function Diag(const Vec: TVecInt; k: Integer): TMtxInt;

Sets the matrix diagonal to values from the vector.

#NameTypeDescription
1VecTVecInt
2kInteger

Result: stored in self (calling object), returns self for chaining

Remarks:

Sets the k-th diagonal of the calling matrix to values from from the Vec object. If k = 0 then the main diagonal matrix is set, if k < 0 then the k-th subdiagonal matrix is set and if k > 0 the then the k-th super diagonal is set. The matrix must be large enough to hold diagonal or an exception is raised.

Examples
var A: MatrixInt;
    D: VectorInt;
begin
    A := [[1,1],[1,2]];
    D := [3,4];
    A.Diag(D,0);
    // A becomes:
    // [3,1]
    // [1,4]
end;
See Also: TVecInt.Diag