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MatrixInt.Diag Method
MatrixInt Record | MatrixInt Members | MtxExprInt Namespace | public | Example | See Also
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Sets the matrix diagonal to values from the vector.

Pascal
function Diag(const Vec: TVecInt; k: integer): TMtxInt; overload;
Description

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.

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Example
var A: TMtxInt; D: TVecInt; begin CreateIt(A); CreateIt(D); try A.SetIt(2,2,[1,1, 1,2]); D.SetIt([3,4]); A.Diag(D,0); // A becomes: // [3,1] // [1,4] finally FreeIt(D); FreeIt(A); end; end;
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