TVec.GetCol Method

Overload List

#	Signature	Description
1	TVec GetCol(TMtx Mtx, Int32 Col)	Copies a column from matrix.
2	TVec GetCol(TMtx Mtx, Int32 Row, Int32 Col, Int32 Len)	Copy the Col-th column elements [Row]..[Row+Len-1] to calling vector.
3	TVec GetCol(TMtx Mtx, Int32 Row, Int32 Col, Int32 Index, Int32 Len)	Copy the Col-th column elements [Row]..[Row+Len-1] to calling vector elements [Index]..[Index+Len-1].

Overload 1: TVec GetCol(TMtx Mtx, Int32 Col)

Copies a column from matrix.

#	Name	Type	Description
1	Mtx	TMtx	source TMtx
2	Col	Int32

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

Remarks:

Copies the Col-th column from Mtx matrix to calling vector. The Dew.Math.TMtxVecBase.Length and Dew.Math.TMtxVec.Complex properties of calling vector are adjusted automatically. An exception is raised if condition checking is enabled and Col is greater than Mtx.Cols-1.

Examples

TVec a;
TMtx b;
MtxVec.CreateIt(out a);
MtxVec.CreateIt(out b);
try
    {
        b.SetIt(2,2,false,[1,2,
        3,4]);
        a.GetCol(b,0); // a now contains new double[] {1,3}
    }
finally
    {
        MtxVec.FreeIt(ref a);
        MtxVec.FreeIt(ref b);
    }

See Also: TVec.GetRow, TMtx.SetCol

Overload 2: TVec GetCol(TMtx Mtx, Int32 Row, Int32 Col, Int32 Len)

Copy the Col-th column elements [Row]..[Row+Len-1] to calling vector.

#	Name	Type	Description
1	Mtx	TMtx	source TMtx
2	Row	Int32
3	Col	Int32
4	Len	Int32	element count

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

Remarks:

The Dew.Math.TMtxVecBase.Length and Dew.Math.TMtxVec.Complex properties of calling vector are adjusted automatically. An exception is raised if condition checking is enabled and column array borders are overrun.

Overload 3: TVec GetCol(TMtx Mtx, Int32 Row, Int32 Col, Int32 Index, Int32 Len)

Copy the Col-th column elements [Row]..[Row+Len-1] to calling vector elements [Index]..[Index+Len-1].

#	Name	Type	Description
1	Mtx	TMtx	source TMtx
2	Row	Int32
3	Col	Int32
4	Index	Int32	start index
5	Len	Int32	element count

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

Remarks:

The Dew.Math.TMtxVec.Complex property of calling vector must be set explicitly. An exception is raised if condition checking is enabled and column array borders are overrun.