Plot Same Column in One Graph

Version Info

Minimum Origin Version Required: Origin 8 SR0

Example

This example shows how to plot the same column in a graph, first part using scatter, and second part using line.

void plot_partial_data()
{
        Worksheet wks;
        wks.Create("origin");
        wks.SetSize(50,2);
        int nXCol = 0; 
        int nYCol = 1;
        Dataset dx(wks, nXCol);
        dx.Data(1,50);
        dx *= 0.05;
        Dataset dy(wks, nYCol);
        dy.Normal(50);
        dy += 1.2;

        int nR1 = 20;
        DataRange dr;
        dr.Add("X", wks, 0, nXCol, nR1, nXCol);
        dr.Add("Y", wks, 0, nYCol, nR1, nYCol);
        
        GraphPage gp;
        gp.Create("origin", CREATE_HIDDEN);
        GraphLayer gl = gp.Layers();
        gl.AddPlot(dr, IDM_PLOT_SCATTER);
        
        // add 2nd plot of same range
        DataRange dr2;
        dr2.Add("X", wks, nR1, nXCol, -1, nXCol);
        dr2.Add("Y", wks, nR1, nYCol, -1, nYCol);
        gl.AddPlot(dr2, IDM_PLOT_LINE);
        
        gl.Rescale();
        gp.SetShow();
}