如何对图表数据点进行分组并为每个数据点的分组的总和添加一个系列？

Question

我正在尝试按间隔为 15 分钟的多个系列的数据点对下图中的数据进行分组。

如图所示有两个系列，我的程序有可能添加无限系列的不同名称。如何将不同系列的 y 值分组在同一点以添加到总成本系列中？我已经试过了：

chartDailyCost.DataManipulator.Group(
"SUM", 15, System.Windows.Forms.DataVisualization.Charting.IntervalType.Minutes, "*");

其中“*”显然将多个输入系列分组 这也是我用来将折线图添加到图表中的循环：

chartDailyCost.Series.Add(textBoxApplianceName.Text);
chartDailyCost.Legends.Add(textBoxApplianceName.Text); 
chartDailyCost.Series[textBoxApplianceName.Text].ChartType = System.Windows.Forms.
    DataVisualization.Charting.SeriesChartType.Line;

while (starttime <= endtime)
{
   if ((starttime <= (Convert.ToDateTime("06:00"))) 
   && (starttime > (Convert.ToDateTime("00:00"))))
   {
     TotalCostLowPeak = TotalCost * (8.0 / 12.2);
     chartDailyCost.Series[textBoxApplianceName.Text].
                    Points.AddXY( starttime, TotalCostLowPeak);
   }
   if ((starttime <= (Convert.ToDateTime("10:00"))) 
   && (starttime > (Convert.ToDateTime("06:00"))))
   {
     TotalCostHighPeak = TotalCost * (16.1 / 12.2);
     chartDailyCost.Series[textBoxApplianceName.Text]
                   .Points.AddXY(starttime, TotalCostHighPeak);
   }
   if ((starttime <= (Convert.ToDateTime("16:00"))) 
   && (starttime > (Convert.ToDateTime("10:00"))))
   {
     chartDailyCost.Series[textBoxApplianceName.Text]
                   .Points.AddXY(starttime, TotalCost);
   }
  if ((starttime <= (Convert.ToDateTime("20:00"))) 
  && (starttime > (Convert.ToDateTime("16:00"))))
 {
   TotalCostHighPeak = TotalCost * (16.1 / 12.2);
   chartDailyCost.Series[textBoxApplianceName.Text]
                 .Points.AddXY(starttime, TotalCostHighPeak);
 }
 if ((starttime <= (Convert.ToDateTime("23:45"))) 
 && (starttime > (Convert.ToDateTime("20:00"))))
 {
     TotalCostLowPeak = TotalCost * (8.0 / 12.2);
     chartDailyCost.Series[textBoxApplianceName.Text]
                   .Points.AddXY(starttime, TotalCostLowPeak);
 }

 starttime = starttime.AddMinutes(15);
}
sumSeries(chartDailyCost);

在这里我尝试了 TaW 推荐的方法，但我得到了错误：

http://postimg.org/image/7pco8vrst/

using System.Windows.Forms.DataVisualization.Charting;
private void sumSeries(Chart chartDailyCost)
    {
        chartDailyCost.Series.Remove(chartDailyCost.Series["Total Cost"]);

        List<Series> dataSeries = chartDailyCost.Series.ToList();
//this line shows an error when multiple series are added
        Series sumSeries = chartDailyCost.Series.Add("Total Cost");
        chartDailyCost.Series["Total Cost"].ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.Column;
        //I have initialised many of the chart formats in the form_load method

        for (int i = 1; i < dataSeries[0].Points.Count; i++)
        {
            double sum = 0d;

            //for every series in the chart collection sum the yvalues at the specified 
            foreach (Series s in dataSeries)
            {
                sum += s.Points[i].YValues[0];
            }
            DataPoint dp = new DataPoint();
            //Add a new yvalue to the datapoint for the summed series's
            dp.XValue = dataSeries[0].Points[i].XValue;
            dp.YValues[0] = sum;
            sumSeries.Points.Add(dp);
        }
        //Add all of the data points to the "Total Cost" Series
        //chartDailyCost.Series.Add(sumSeries);//Found in above coding
    }

Answer 1

代码示例假设您要将所有系列的所有值相加到一个新系列的点中。此外，所有系列都有相同的点数和相同的XValues。

using System.Windows.Forms.DataVisualization.Charting;
...
...
void sumSeries(Chart chart)
{
    List<Series> dataSeries = chart.Series.ToList();
    Series sumSeries = chart.Series.Add("Total");
    // insert charttype and styles here!
    for (int i = 0; i < dataSeries[0].Points.Count; i++)
    {
        double sum = 0d;

        foreach (Series s in dataSeries)
        {
            sum += s.Points[i].YValues[0];
        }
        DataPoint dp = new DataPoint();
        dp.XValue = dataSeries[0].Points[i].XValue;
        dp.YValues[0] = sum;
        sumSeries.Add(dp);
    }
}

这会添加一个新的Series sumSeries。在您再次调用该函数以反映更新的数据之前，请务必删除它。