Steema Central

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  //create chart and add as child of "this" view. 
  m_chart = new CTChart();
  m_chart->Create (CHART_CLASSNAME, "", WS_CHILD, rect, this,   IDC_TCHART);
	m_chart->SetVisible(TRUE);


  //add waterfall
  m_chart->AddSeries(scWaterfall);
  CWaterfallSeries  waterfall = m_chart->Series(0).GetAsWaterfall();

  //make irregular
  waterfall.SetIrregularGrid(TRUE);

  //copy over to safe arrays, first dimension them. 
  long size = 10;
 
  //create data arrays
  COleSafeArray XValues;
  COleSafeArray YValues;
  COleSafeArray ZValues;
  XValues.CreateOneDim(VT_R8, size*size);
  YValues.CreateOneDim(VT_R8, size*size);
  ZValues.CreateOneDim(VT_R8, size*size);


  //create 10x10 data grid. x in increments of 0.22, z integer increments 
  //y random
  long index[1];
  for(int ii = 0; ii<size; ++ii)
  {
    for(int jj = 0; jj<size; ++jj)
    {
      double val = jj*0.22;
      index[0] = jj + ii*size;
      XValues.PutElement(index,&val);

      val = 0.001*rand();
      YValues.PutElement(index,&val);

      val = ii;
      ZValues.PutElement(index,&val);
    }
  }

  //turn off paint
  m_chart->SetAutoRepaint(FALSE);

  //==============================
  //This code crashed after setting side brush
  //==============================
  waterfall.AddArrayXYZ(XValues,YValues,ZValues);

  //this line will fire an exception if adding data with arrays
  //adding data points individually and  then setting side color works
  waterfall.GetSideBrush().SetColor(RGB(255, 0, 0));

 
  //==============================
  //This code works
  //==============================
  //for(int i =0; i < 10; ++i) 
  //{ 
     //for(int j = 0; j<10; ++j)
     //{
      //notice X coord is non - integer, this will crash when data tab selected
      //on editor dialog. Change to integer and it will work.
      //waterfall.AddXYZ(j*0.22, 0.001*rand(),i,"", clTeeColor);
     //}
  //}
  //this works if data set point by point
  //waterfall.GetSideBrush().SetColor(RGB(255, 0, 0));
  m_chart->SetAutoRepaint(TRUE);