TMtx Diag(TVec Vec, Int32 k)
Sets the matrix diagonal to values from the vector.
| # | Name | Type | Description |
|---|---|---|---|
| 1 | Vec | TVec | source TVec |
| 2 | k | Int32 |
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
TMtx A;
TVec D;
MtxVec.CreateIt(out A);
MtxVec.CreateIt(out D);
try
{
A.SetIt(2,2,true,[1,1, 2,1,
1,2, 2,2]);
D.SetIt(2, true,new double[] {2,2, 1,1});
A.Diag(D,0);
// A becomes:
// [2,2, 2,1]
// [1,2, 1,1]
}
finally
{
MtxVec.FreeIt(ref D);
MtxVec.FreeIt(ref A);
}See Also: TVec.Diag