TVec.GetRow Method

Overload List

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

Overload 1: TVec GetRow(TMtx Mtx, Int32 Row)

Copies a row from matrix.

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

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

Remarks:

Copies the Row-th row 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 Row is greater than Mtx.Rows-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.GetRow(b,0); // a now contains new double[] {1,2}
    }
finally
    {
        MtxVec.FreeIt(ref a);
        MtxVec.FreeIt(ref b);
    }

See Also: TVec.GetCol, TMtx.SetRow

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

Copy the Row-th column elements [Col]..[Col+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 GetRow(TMtx Mtx, Int32 Row, Int32 Col, Int32 Index, Int32 Len)

Copy the Row-th column elements [Col]..[Col+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.