matrixbase::ReorderColWise

1 Description
2 Syntax
3 Parameters
4 Return
5 Examples
6 Remark
7 See Also
8 header to Include

Description

rearrange the matrix in column-wise according to the given indices

Syntax

BOOL ReorderColWise( const vector<UINT> & vnIndices, int nR1 = 0, int nC2 = -1 )

Parameters

vnIndices: [input] array of column index to reorder
nR1: [input] 1st row index to reorder
nC2: [input] last row index to reorder, use -1 to indicate the last row in matrix

Return

Returns TRUE on successful exit or FALSE on failure.

Examples

EX1

void ReorderColWise_ex()
{
    BOOL rc;
    
    matrix mat1 = {
        {1, 2, 6,  9},  
        {2, 5, 4, 11},
        {3, 7, 2, 12},
        {4, 0, 4,  8},
        {5, 2, 3, 10},
        {6, 1, 0,  7}
    };
    
    vector<UINT> vOrders = {3, 0, 1, 2};

    MatrixPage MatPg1;
    MatPg1.Create("Origin");
    MatrixLayer MatLy1 = MatPg1.Layers(0);
    Matrix Mat1(MatLy1);
    Mat1 = mat1;
    printf("  Original matrix is %s.\n",Mat1.GetName());
    
    MatrixPage MatPg2;
    MatPg2.Create("Origin");
    MatrixLayer MatLy2 = MatPg2.Layers(0);
    Matrix Mat2(MatLy2);
    Mat2 = mat1;
    
    rc=Mat2.ReorderColWise(vOrders, 0, 1); //Reordering columns based on the vOrders vector, only reorder the first 2 rows
    if(!rc) 
        printf("  Error: fail.\n");
    else
        printf("  Reordered matrix is %s.\n",Mat2.GetName());
}