TVec.PixelDownSampleHigh Method

void PixelDownSampleHigh(Int32 Width, TVec Y, Int32 Index, Int32 Len, TVec X, TVec NX)

Downsample the vectors Y and (optionaly) X starting at position Index and for Len samples.

#	Name	Type	Description
1	Width	Int32
2	Y	TVec	source TVec
3	Index	Int32	start index
4	Len	Int32	element count
5	X	TVec	source TVec
6	NX	TVec	source TVec

Result: stored in self (calling object)

Remarks:

The method downsamples only the maximum values. This can be usefull, if the input is already a downsampled signal which has to be further downsampled.

Examples

TVec a;
TVec b;
TVec c;
TVec d;
TVec High;
TVec Low;
MtxVec.CreateIt(out a, out b, out c, out d);
MtxVec.CreateIt(out High, out Low);
try
    {
        a.SetIt(false,new double[] {0,0,0,1,2,3,1,2,3});
        b.PixelDownSample(4,a);
        High.Demultiplex(b,2,0);
        Low.Demultiplex(b,2,1);

        c.PixelDownSampleHigh(2,High); //further downsample
        d.PixelDownSampleLow(2,Low); //further downsample

        b.Size(2*c.Length);
        b.Multiplex(c,2,0);
        b.Multiplex(d,2,1);

        //b now contains the same result, as if we would have called
        //on the start:

        b.PixelDownSample(2,a);

    }
finally
    {
        MtxVec.FreeIt(ref a, ref b, ref c, ref d);
        MtxVec.FreeIt(ref High, ref Low);
    }

See Also: TVec.DownSample