Stacked step area in ASP.NET CORE Charts component

13 Dec 202424 minutes to read

Stacked step area

To render a stacked step area series in your chart, you need to follow a few steps to configure it correctly. Here’s a concise guide on how to do this:

  • Set the series type: Define the series type as StackingStepArea in your chart configuration. This indicates that the data should be represented as a stacked step area chart, which is a combination of a stacked area chart and a step area chart. It connects the data points with vertical and horizontal lines, creating a step like appearance.
<ejs-chart id="container" title="Family Expense for Month">
    <e-chart-primaryxaxis valueType="Category" interval="1">
    </e-chart-primaryxaxis>
    <e-series-collection>
        <e-series dataSource="ViewBag.dataSource" name="John" xName="x" width="2" yName="y" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Peter" xName="x" width="2" yName="y1" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Steve" xName="x" width="2" yName="y2" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Charle" xName="x" width="2" yName="y3" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
    </e-series-collection>
</ejs-chart>
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

Binding data with series

You can bind data to the chart using the dataSource property within the series configuration. This allows you to connect a JSON dataset or remote data to your chart. To display the data correctly, map the fields from the data to the chart series xName and yName properties.

<ejs-chart id="container" title="Family Expense for Month">
    <e-chart-primaryxaxis valueType="Category" interval="1">
    </e-chart-primaryxaxis>
    <e-series-collection>
        <e-series dataSource="ViewBag.dataSource" name="John" xName="x" width="2" yName="y" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Peter" xName="x" width="2" yName="y1" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Steve" xName="x" width="2" yName="y2" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Charle" xName="x" width="2" yName="y3" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
    </e-series-collection>
</ejs-chart>
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

Series customization

The following properties can be used to customize the stacked step area series.

Fill

The fill property determines the color applied to the series.

<ejs-chart id="container" title="Family Expense for Month">
    <e-chart-primaryxaxis valueType="Category" interval="1">
    </e-chart-primaryxaxis>
    <e-series-collection>
        <e-series dataSource="ViewBag.dataSource" name="John" xName="x" yName="y" type="StackingStepArea" fill="#ff4251">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Peter" xName="x" yName="y1" type="StackingStepArea" fill="#4C4C4C">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Steve" xName="x" yName="y2" type="StackingStepArea" fill="#794F1B">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
    </e-series-collection>
</ejs-chart>
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

The fill property can be used to apply a gradient color to the stacked step area series. By configuring this property with gradient values, you can create a visually appealing effect in which the color transitions smoothly from one shade to another.

<svg style="width:1px; height:1px">
            <defs>
                <linearGradient id="gradient1">
                    <stop offset="0%" style="stop-color:coral;stop-opacity:5" />
                    <stop offset="50%" style="stop-color:mediumseagreen;stop-opacity:5" />
                </linearGradient>
            </defs>
</svg>

<svg style="width:1px; height:1px">
    <defs>
        <linearGradient id="gradient2">
            <stop offset="0%" style="stop-color:darkred;stop-opacity:5" />
            <stop offset="50%" style="stop-color:darkorange;stop-opacity:5" />
        </linearGradient>
    </defs>
</svg>

<svg style="width:1px; height:1px">
    <defs>
        <linearGradient id="gradient3">
            <stop offset="0%" style="stop-color:darkmagenta;stop-opacity:5" />
            <stop offset="50%" style="stop-color:darkcyan;stop-opacity:5" />
        </linearGradient>
    </defs>
</svg>

<svg style="width:1px; height:1px">
    <defs>
        <linearGradient id="gradient4">
            <stop offset="0%" style="stop-color:darkviolet;stop-opacity:5" />
            <stop offset="50%" style="stop-color:darkgoldenrod;stop-opacity:5" />
        </linearGradient>
    </defs>
</svg>

<ejs-chart id="container" title="Family Expense for Month">
    <e-chart-primaryxaxis valueType="Category" interval="1">
    </e-chart-primaryxaxis>
    <e-series-collection>
        <e-series dataSource="ViewBag.dataSource" name="John" xName="x" yName="y" type="StackingStepArea" fill="url(#gradient1)">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Peter" xName="x" yName="y1" type="StackingStepArea" fill="url(#gradient2)">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Steve" xName="x" yName="y2" type="StackingStepArea" fill="url(#gradient3)">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Charle" xName="x" yName="y3" type="StackingStepArea" fill="url(#gradient4)">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
    </e-series-collection>
</ejs-chart>
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

Opacity

The opacity property specifies the transparency level of the fill. Adjusting this property allows you to control how opaque or transparent the fill color of the series appears.

<ejs-chart id="container" title="Family Expense for Month">
    <e-chart-primaryxaxis valueType="Category" interval="1">
    </e-chart-primaryxaxis>
    <e-series-collection>
        <e-series dataSource="ViewBag.dataSource" name="John" xName="x" width="2" yName="y" opacity="0.5" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Peter" xName="x" width="2" yName="y1" opacity="0.5" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Steve" xName="x" width="2" yName="y2" opacity="0.5" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Charle" xName="x" width="2" yName="y3" opacity="0.5" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
    </e-series-collection>
</ejs-chart>
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

Border

Use the border property to customize the width, color and dasharray of the series border.

<ejs-chart id="container" title="Family Expense for Month">
    <e-chart-primaryxaxis valueType="Category" interval="1">
    </e-chart-primaryxaxis>
    <e-series-collection>
        <e-series dataSource="ViewBag.dataSource" name="John" xName="x" width="2" dashArray="5,5" yName="y" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
            <e-series-border width="2" color="green" dashArray="5,5"></e-series-border>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Peter" xName="x" width="2" dashArray="5,5" yName="y1" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
            <e-series-border width="2" color="green" dashArray="5,5"></e-series-border>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Steve" xName="x" width="2" dashArray="5,5" yName="y2" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
            <e-series-border width="2" color="green" dashArray="5,5"></e-series-border>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Charle" xName="x" width="2" dashArray="5,5" yName="y3" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
            <e-series-border width="2" color="green" dashArray="5,5"></e-series-border>
        </e-series>
    </e-series-collection>
</ejs-chart>
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            ChartBorder border = new ChartBorder();
            border.Width = 2;
            border.Color = "green";
            border.DashArray = "5,5";
            ViewBag.border = border;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

Step

Use the step property to change the position of the steps in a stacked step area series.

<ejs-chart id="container" title="Family Expense for Month">
    <e-chart-primaryxaxis valueType="Category" interval="1">
    </e-chart-primaryxaxis>
    <e-series-collection>
        <e-series dataSource="ViewBag.dataSource" name="John" step="Center" xName="x" width="2" yName="y" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Peter" step="Center" xName="x" width="2" yName="y1" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Steve" step="Center" xName="x" width="2" yName="y2" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Charle" step="Center" xName="x" width="2" yName="y3" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
    </e-series-collection>
</ejs-chart>
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

No risers

You can eliminate the vertical lines between points by using the NoRisers property in a series. This approach is useful for highlighting trends without the distraction of risers.

<ejs-chart id="container" title="Trend in Sales of Ethical Produce">
    <e-chart-primaryxaxis title="Years" edgeLabelPlacement="@Syncfusion.EJ2.Charts.EdgeLabelPlacement.Shift">
        <e-majorticklines width="0"></e-majorticklines>
    </e-chart-primaryxaxis>
    <e-chart-primaryyaxis labelFormat="{value}B" minimum="0" maximum="4" interval="1" title="Spend in Billions">
        <e-majorticklines width="0"></e-majorticklines>
    </e-chart-primaryyaxis>
    <e-series-collection>
        <e-series dataSource="ViewBag.dataSource" xName="X" yName="Y" name="Organic" noRisers="true" type="@Syncfusion.EJ2.Charts.ChartSeriesType.StackingStepArea">
        </e-series>
        <e-series dataSource="ViewBag.dataSource" xName="X" yName="Y1" name="Fair-trade" noRisers="true" type="@Syncfusion.EJ2.Charts.ChartSeriesType.StackingStepArea">
        </e-series>
        <e-series dataSource="ViewBag.dataSource" xName="X" yName="Y2" name="Others" noRisers="true" type="@Syncfusion.EJ2.Charts.ChartSeriesType.StackingStepArea">
        </e-series>
    </e-series-collection>
</ejs-chart>
public IActionResult Index () 
{
    List<ChartData> chartData = new List<ChartData>
    {
        new ChartData { X = 2000, Y = 0.61, Y1 = 0.03, Y2 = 0.48 },
        new ChartData { X = 2001, Y = 0.81, Y1 = 0.05, Y2 = 0.53 },
        new ChartData { X = 2002, Y = 0.91, Y1 = 0.06, Y2 = 0.57 },
        new ChartData { X = 2003, Y = 1,    Y1 = 0.09, Y2 = 0.61 },
        new ChartData { X = 2004, Y = 1.19, Y1 = 0.14, Y2 = 0.63 },
        new ChartData { X = 2005, Y = 1.47, Y1 = 0.20, Y2 = 0.64 },
        new ChartData { X = 2006, Y = 1.74, Y1 = 0.29, Y2 = 0.66 },
        new ChartData { X = 2007, Y = 1.98, Y1 = 0.46, Y2 = 0.76 },
        new ChartData { X = 2008, Y = 1.99, Y1 = 0.64, Y2 = 0.77 },
        new ChartData { X = 2009, Y = 1.70, Y1 = 0.75, Y2 = 0.55 }
    };
    ViewBag.dataSource = chartData;
    return View();
}
public class ChartData
{
    public double X;
    public double Y;
    public double Y1;
    public double Y2;
}

Empty points

Data points with null or undefined values are considered empty. Empty data points are ignored and not plotted on the chart.

Mode

Use the mode property to define how empty or missing data points are handled in the series. The default mode for empty points is Gap.

<ejs-chart id="container" title="Family Expense for Month">
    <e-chart-primaryxaxis valueType="Category" interval="1">
    </e-chart-primaryxaxis>
    <e-series-collection>
        <e-series dataSource="ViewBag.dataSource" name="John" xName="x" yName="y" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
            <e-series-emptypointsettings mode="Syncfusion.EJ2.Charts.EmptyPointMode.Average"></e-series-emptypointsettings>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Peter" xName="x" yName="y1" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
            <e-series-emptypointsettings mode="Syncfusion.EJ2.Charts.EmptyPointMode.Average"></e-series-emptypointsettings>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Steve" xName="x" yName="y2" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
            <e-series-emptypointsettings mode="Syncfusion.EJ2.Charts.EmptyPointMode.Average"></e-series-emptypointsettings>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Charle" xName="x" yName="y3" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
            <e-series-emptypointsettings mode="Syncfusion.EJ2.Charts.EmptyPointMode.Average"></e-series-emptypointsettings>
        </e-series>
    </e-series-collection>
</ejs-chart>
public ActionResult Index()
{
    List<StackedLineChartData> chartData = new List<StackedLineChartData>
        {
            new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
            new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
            new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
            new StackedLineChartData { x= "Clothes", y= null, y1= 30, y2= 60, y3= 180 },
            new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
            new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
            new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
            new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= null, y3= 75 },
            new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
            new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
            new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
            new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
        };
        ViewBag.dataSource = chartData;
        ChartEmptyPointSettings chartEmptyPointSettings = new ChartEmptyPointSettings();
        chartEmptyPointSettings.Mode = EmptyPointMode.Gap;
        ViewBag.emptyPoint = chartEmptyPointSettings;
        return View();
}


public class StackedLineChartData
{
    public string x;
    public double? y;
    public double y1;
    public double? y2;
    public double y3;
}

Fill

Use the fill property to customize the fill color of empty points in the series.

<ejs-chart id="container" title="Family Expense for Month">
    <e-chart-primaryxaxis valueType="Category" interval="1">
    </e-chart-primaryxaxis>
    <e-series-collection>
        <e-series dataSource="ViewBag.dataSource" name="John" xName="x" yName="y" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
            <e-series-emptypointsettings mode="Syncfusion.EJ2.Charts.EmptyPointMode.Average" fill="red"></e-series-emptypointsettings>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Peter" xName="x" yName="y1" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
            <e-series-emptypointsettings mode="Syncfusion.EJ2.Charts.EmptyPointMode.Average" fill="red"></e-series-emptypointsettings>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Steve" xName="x" yName="y2" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
            <e-series-emptypointsettings mode="Syncfusion.EJ2.Charts.EmptyPointMode.Average" fill="red"></e-series-emptypointsettings>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Charle" xName="x" yName="y3" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
            <e-series-emptypointsettings mode="Syncfusion.EJ2.Charts.EmptyPointMode.Average" fill="red"></e-series-emptypointsettings>
        </e-series>
    </e-series-collection>
</ejs-chart>
public ActionResult Index()
{
    List<StackedLineChartData> chartData = new List<StackedLineChartData>
    {
        new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
        new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
        new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
        new StackedLineChartData { x= "Clothes", y= null, y1= 30, y2= 60, y3= 180 },
        new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
        new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
        new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
        new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= null, y3= 75 },
        new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
        new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
        new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
        new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
    };
    ViewBag.dataSource = chartData;
    ChartEmptyPointSettings chartEmptyPointSettings = new ChartEmptyPointSettings();
    chartEmptyPointSettings.Mode = EmptyPointMode.Average;
    chartEmptyPointSettings.Fill = "red";
    ViewBag.emptyPoint = chartEmptyPointSettings;
        ChartMarkerSettings marker = new ChartMarkerSettings();
        marker.Visible = true;
        marker.Width = 7;
        marker.Height = 7;
        marker.IsFilled = true;
        ViewBag.marker = marker;
        return View();
}


public class StackedLineChartData
{
    public string x;
    public double? y;
    public double y1;
    public double? y2;
    public double y3;
}

Border

Use the border property to customize the width and color of the border for empty points.

<ejs-chart id="container" title="Family Expense for Month">
    <e-chart-primaryxaxis valueType="Category" interval="1">
    </e-chart-primaryxaxis>
    <e-series-collection>
        <e-series dataSource="ViewBag.dataSource" name="John" xName="x" yName="y" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
            <e-series-emptypointsettings mode="Syncfusion.EJ2.Charts.EmptyPointMode.Average">
                <e-emptypointsettings-border width="2" color="green"></e-emptypointsettings-border>
            </e-series-emptypointsettings>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Peter" xName="x" yName="y1" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
            <e-series-emptypointsettings mode="Syncfusion.EJ2.Charts.EmptyPointMode.Average">
                <e-emptypointsettings-border width="2" color="green"></e-emptypointsettings-border>
            </e-series-emptypointsettings>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Steve" xName="x" yName="y2" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
            <e-series-emptypointsettings mode="Syncfusion.EJ2.Charts.EmptyPointMode.Average">
                <e-emptypointsettings-border width="2" color="green"></e-emptypointsettings-border>
            </e-series-emptypointsettings>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Charle" xName="x" yName="y3" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
            <e-series-emptypointsettings mode="Syncfusion.EJ2.Charts.EmptyPointMode.Average">
                <e-emptypointsettings-border width="2" color="green"></e-emptypointsettings-border>
            </e-series-emptypointsettings>
        </e-series>
    </e-series-collection>
</ejs-chart>
public ActionResult Index()
{
    List<StackedLineChartData> chartData = new List<StackedLineChartData>
        {
            new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
            new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
            new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
            new StackedLineChartData { x= "Clothes", y= null, y1= 30, y2= 60, y3= 180 },
            new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
            new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
            new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
            new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= null, y3= 75 },
            new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
            new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
            new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
            new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
        };
        ViewBag.dataSource = chartData;
        ChartEmptyPointSettings chartEmptyPointSettings = new ChartEmptyPointSettings();
        chartEmptyPointSettings.Mode = EmptyPointMode.Average;
        chartEmptyPointSettings.Border.Width = 2;
        chartEmptyPointSettings.Border.Color = "green";
        ViewBag.emptyPoint = chartEmptyPointSettings;
        ChartMarkerSettings marker = new ChartMarkerSettings();
        marker.Visible = true;
        marker.Width = 7;
        marker.Height = 7;
        marker.IsFilled = true;
        ViewBag.marker = marker;
        return View();
}


public class StackedLineChartData
{
    public string x;
    public double? y;
    public double y1;
    public double? y2;
    public double y3;
}

Events

Series render

The seriesRender event allows you to customize series properties, such as data, fill, and name, before they are rendered on the chart.

<ejs-chart id="container" title="Family Expense for Month" seriesRender="changeColor">
    <e-chart-primaryxaxis valueType="Category" interval="1">
    </e-chart-primaryxaxis>
    <e-series-collection>
        <e-series dataSource="ViewBag.dataSource" name="John" xName="x" width="2" yName="y" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Peter" xName="x" width="2" yName="y1" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Steve" xName="x" width="2" yName="y2" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Charle" xName="x" width="2" yName="y3" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
    </e-series-collection>
</ejs-chart>

<script>
    function changeColor(args) {
        if (args.series.index === 0) {
            args.fill = '#ff4251';
        }
        else if (args.series.index === 1) {
            args.fill = '#4C4C4C';
        }
        else if (args.series.index === 2) {
            args.fill = '#794F1B';
        }
        else if (args.series.index === 3) {
            args.fill = '#1a9a6f';
        }
    }
</script>
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

Point render

The pointRender event allows you to customize each data point before it is rendered on the chart.

<ejs-chart id="container" title="Family Expense for Month" pointRender="changeColor">
    <e-chart-primaryxaxis valueType="Category" interval="1">
    </e-chart-primaryxaxis>
    <e-series-collection>
        <e-series dataSource="ViewBag.dataSource" name="John" xName="x" width="2" yName="y" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Peter" xName="x" width="2" yName="y1" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Steve" xName="x" width="2" yName="y2" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
        <e-series dataSource="ViewBag.dataSource" name="Charle" xName="x" width="2" yName="y3" type="StackingStepArea">
            <e-series-marker visible="true"></e-series-marker>
        </e-series>
    </e-series-collection>
</ejs-chart>

<script>
    function changeColor(args) {
        if (args.point.y < 100) {
            args.fill = '#ff6347';
        }
        else {
            args.fill = '#009cb8';
        }
    }
</script>
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

See also