2.2.3.9.49 matrixbase::Padding

Padding

Description

Pad a matrix with selected way

Syntax

BOOL Padding( matrixbase & mPadding, int nPadSize, int nPaddingOption = MFILTER_ZEROPADDINGWINDOW )

Parameters

mPadding

[Modify] matrix with padded cells having same underlying base type of this matrix

nPadSize

[input] padding width, must be larger than 0

nPaddingOption

[input] Pads the area outside the borders in one of the following ways

=MFILTER_ZEROPADDINGWINDOW -- Zero Pad, pads with zeroes

=MFILTER_MAPPADDINGWINDOW -- Reflect Pad, values from immediate neighbors are repeated but more inside values are reflected padding more than 1 line;

=MFILTER_REPEATEDGEPADDINGWINDOW--- repeat edge padding.

Return

Returns TRUE on success or FALSE on failure.

Examples

EX1

void matrixbase_Padding_ex1()
{
    matrix<double> mat1 = {
        {1,  2,  3,  4},
        {2,  4,  6,  8},
        {5, 10, 15, 20}
    };
    MatrixPage MatPg1;
    MatPg1.Create("Origin");
    MatrixLayer MatLy1 = MatPg1.Layers(0);
    Matrix Mat1(MatLy1);
    Mat1 = mat1;
    
    MatrixPage MatPg2;
    MatPg2.Create("Origin");
    MatrixLayer MatLy2 = MatPg2.Layers(0);
    Matrix Mat2(MatLy2);            
    int rc = Mat1.Padding( Mat2, 2 ); // default is MFILTER_ZEROPADDINGWINDOW
    if(!rc) 
        printf("Error: Padding on a matrix failed. (Option:ZEROPADDINGWINDOW (default))\n");
    else
        printf("Observe the padded matrix window %s from %s. (Option:ZEROPADDINGWINDOW (default))\n",
          Mat2.GetName(),Mat1.GetName());

    MatrixPage MatPg3;
    MatPg3.Create("Origin");
    MatrixLayer MatLy3 = MatPg3.Layers(0);
    Matrix Mat3(MatLy3);
    rc = Mat1.Padding( Mat3, 2, MFILTER_MAPPADDINGWINDOW );
    if(!rc) printf("Error: Padding on a matrix failed. (Option:MAPPADDINGWINDOW)\n");
    else
        printf("Observe the padded matrix window %s from %s. (Option:MAPPADDINGWINDOW)\n",
          Mat3.GetName(),Mat1.GetName());
          
    MatrixPage MatPg4;
    MatPg4.Create("Origin");
    MatrixLayer MatLy4 = MatPg4.Layers(0);
    Matrix Mat4(MatLy4);                  
    rc = Mat1.Padding( Mat4, 2, MFILTER_REPEATEDGEPADDINGWINDOW );
    if(!rc) printf("Error: Padding on a matrix failed. (Option:REPEATEDGEPADDINGWINDOW)\n");
    else
        printf("Observe the padded matrix window %s from %s. (Option:REPEATEDGEPADDINGWINDOW)\n",
          Mat4.GetName(),Mat1.GetName());
}

Remark

Pad a matrix with 0 or with adjacent cell values.

See Also

Header to Include

origin.h