2.2.4.9.29 DataRange::Merge

Merge

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

Description

Merge another DataRange into this DataRange.

Syntax

BOOL Merge( DataRange & range )

Parameters

range: [modify]the DataRange that would be merged,after this operation,it will be invalid object

Return

TRUE if successful.

Examples

EX1

// This example show that merge datarange, then get the minimum and maximum of the data.
void DataRange_Merge_Ex1(int nXCol = 0, int nY1Col = 1, int nY2Col = 2)
{
    //Create a worksheet with three columns.
    Worksheet wks ;
    wks.Create();
    if( wks )
    {
        while(wks.Columns(0))
            wks.DeleteCol(0);

        wks.AddCol("A");
        wks.AddCol("B");
        wks.AddCol("C");
        double rr;
        for(int j=0;j<3;j++)
            for (int i=0;i<10;i++)
            {
                   rr=rnd();
                   wks.SetCell(i,j,rr*100);
            }
        
        DataRange dr, drX, drY1, drY2;
        drX.Add("X", wks, 0, nXCol, -1, nXCol);
        drY1.Add("Y", wks, 0, nY1Col, -1, nY1Col);
        drY2.Add("Y", wks, 0, nY2Col, -1, nY2Col);

        DWORD dwRules = DRR_GET_DEPENDENT | DRR_NO_FACTORS;
        DWORD dwPlotID; // This is to retrieve DataPlot UID if present
        vector vData;
        double dmin, dmax;
        string strRange;

        //dr.Reset();
        dr.Merge(drX);
        dr.Merge(drY1);
        dr.GetData(DRR_NO_FACTORS, 0, &dwPlotID, NULL, &vData);
        // Now we have made a copy of data into vector vData
        // so we can do analysis on the data...for example:
        vData.GetMinMax(dmin, dmax);
        strRange = dr.GetDescription();
        printf("%s\nmin = %g\nmax = %g\n", strRange, dmin, dmax);

        dr.Reset();
        dr.Merge(drX);
        dr.Merge(drY2);
        dr.GetData(DRR_NO_FACTORS, 0, &dwPlotID, NULL, &vData);
        // Now we have made a copy of data into vector vData
        // so we can do analysis on the data...for example:
        vData.GetMinMax(dmin, dmax);
        strRange = dr.GetDescription();
        printf("%s\nmin = %g\nmax = %g\n", strRange, dmin, dmax);
    }
}