2.2.4.9.37 DataRange::SetRange

SetRange

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

Description

Set the subrange at the given index.

Syntax

BOOL SetRange( int nIndex, Datasheet & ds, int nR1, int nC1, int nR2, int nC2, LPCSTR lpcszName = NULL )

Parameters

nIndex: [input]Index of the range to modify
ds: [input]Worksheet or MatrixLayer in which range reside
nR1: [input]Row range begin
nC1: [input]Column range begin
nR2: [input]Row range end, use -1 to indicate end of column
nC2: [input]Column range end, if only one column then put in same value as nC1, if to end of worksheet use -1
lpcszName: [input]Name of the range to add. If NULL the old name will be left unchanged. To create a range for plotting then; use "X", "Y", "Z", or "ED" for Y error bars.

Return

Returns TRUE on successful exit and FALSE on failure.

Examples

EX1

// Draw two dataplots using the data in the worksheet as XYY.
void DataRange_SetRange_Ex1(int nXCol = 0, int nYCol = 1, int nPlots = 1)
{
	//Create a worksheet with three columns and fill with data.
    Worksheet wks;
    wks.Create("Origin");
    if( !wks )
        return;
 
    while(wks.Columns(0))
        wks.DeleteCol(0);
    int nColIndex =0;
    for(int n=0; n< nPlots +2; n++)
        nColIndex = wks.AddCol();
 
    for(int i=0;i<nPlots+2;i++)
    {
        for (int j=0;j<10;j++)
        {
               double rr=rnd();
               wks.SetCell(j,i,rr*100);
        }
    }
    
    //Create a datarange with two subranges X and Y.
    DataRange dr;
    dr.Add(wks, nXCol, "A");
    dr.Add(wks, nYCol, "B");
    dr.SetRange(0, wks, 0, nXCol, -1, nXCol, "X"); // Rename range to X for plotting
    dr.SetRange(1, wks, 0, nYCol, -1, nYCol, "Y"); // Rename range to Y for plotting
 
    GraphPage gp;
    gp.Create("Origin", CREATE_HIDDEN);
    if( gp )
    {
        GraphLayer gl = gp.Layers();
        if( gl )
        {
            int nPlotIndex, iColor;
            iColor = 0; // Index in Origin color list 0=Black, 1=Red, etc.
            DataPlot dp;
            for(int ii = 0; ii < nPlots+1; ii++)
            {
                dr.SetRange(1, wks, 0, nYCol + ii, -1, nYCol + ii, NULL); // Change Y range but do not rename
                nPlotIndex = gl.AddPlot(dr, IDM_PLOT_SCATTER);
                dp = gl.DataPlots(nPlotIndex);
                if( dp )
                    dp.SetColor(iColor++, TRUE ); // Set color of current DataPlot
            }
            gl.Rescale();
            gp.SetShow();
        }
    }                
}