Error Bar Chart in ASP.NET MVC Charts

13 May 202524 minutes to read

Error Bar

Error bars are graphical representations of the variability of data and are used on graphs to indicate the error or uncertainty in a reported measurement.

To render error bars for the 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 visibility: Set the visible property to true for the error bars to be displayed.

@Html.EJS().Chart("container").Series(sr =>
{
    sr.Type(Syncfusion.EJ2.Charts.ChartSeriesType.Line)
        .Name("Sales")
        .XName("x")
        .ErrorBar(error => error.Visible(true))
        .Marker(marker => marker.Visible(true))
        .YName("y")
        .DataSource(ViewBag.dataSource).Add();
}).PrimaryXAxis(xaxis =>
     xaxis.Interval(1)
          .ValueType(Syncfusion.EJ2.Charts.ValueType.Category)
      ).PrimaryYAxis(yaxis =>
          yaxis.LabelFormat("{value}%")
            .Minimum(15)
            .Maximum(45)
      ).Title("Sales Distribution of Car by Region").Render()
public ActionResult Index()
        {
            List<ErrorBarData> chartData = new List<ErrorBarData>
            {
               new ErrorBarData{ x= 2005, y= 28 },
               new ErrorBarData{ x= 2006, y= 25 },
               new ErrorBarData{ x= 2007, y= 26 }, 
               new ErrorBarData{ x= 2008, y= 27 },
               new ErrorBarData{ x= 2009, y= 32 },
               new ErrorBarData{ x= 2010, y= 35 }, 
               new ErrorBarData{ x= 2011, y= 30 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class ErrorBarData
        {
            public double x;
            public double y;
        }

Customizing error bar

To customize the error bar type, set the error bar Type to Custom, and then change the horizontal or vertical positive and negative error values for the error bar.

@Html.EJS().Chart("container").Series(sr =>
{
    sr.Type(Syncfusion.EJ2.Charts.ChartSeriesType.Line)
        .Name("Sales")
        .XName("x")
        .ErrorBar(error => error.Visible(true).
            Type(Syncfusion.EJ2.Charts.ErrorBarType.Custom)
            .Mode(Syncfusion.EJ2.Charts.ErrorBarMode.Both)
            .VerticalPositiveError(2)
            .HorizontalPositiveError(1)
            .VerticalNegativeError(2)
            .VerticalNegativeError(1)
        )
        .Marker(marker => marker.Visible(true))
        .YName("y")
        .DataSource(ViewBag.dataSource).Add();
}).PrimaryXAxis(xaxis =>
     xaxis.Interval(1)
          .ValueType(Syncfusion.EJ2.Charts.ValueType.Category)
      ).PrimaryYAxis(yaxis =>
          yaxis.LabelFormat("{value}%")
            .Minimum(15)
            .Maximum(45)
      ).Title("Sales Distribution of Car by Region").Render()
public ActionResult Index()
        {
            List<ErrorBarData> chartData = new List<ErrorBarData>
            {
               new ErrorBarData{ x= 2005, y= 28 },
               new ErrorBarData{ x= 2006, y= 25 },
               new ErrorBarData{ x= 2007, y= 26 }, 
               new ErrorBarData{ x= 2008, y= 27 },
               new ErrorBarData{ x= 2009, y= 32 },
               new ErrorBarData{ x= 2010, y= 35 }, 
               new ErrorBarData{ x= 2011, y= 30 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class ErrorBarData
        {
            public double x;
            public double y;
        }

Error bar mode

The error bar mode is used to define whether the error bar line is drawn horizontally, vertically or on both sides. To change the error bar mode, use the Mode option.

@Html.EJS().Chart("container").Series(sr =>
{
    sr.Type(Syncfusion.EJ2.Charts.ChartSeriesType.Line)
        .Name("Sales")
        .XName("x")
        .ErrorBar(error => error.Visible(true).Mode(Syncfusion.EJ2.Charts.ErrorBarMode.Horizontal))
        .Marker(marker => marker.Visible(true))
        .YName("y")
        .DataSource(ViewBag.dataSource).Add();
}).PrimaryXAxis(xaxis =>
     xaxis.Interval(1)
          .ValueType(Syncfusion.EJ2.Charts.ValueType.Category)
      ).PrimaryYAxis(yaxis =>
          yaxis.LabelFormat("{value}%")
            .Minimum(15)
            .Maximum(45)
      ).Title("Sales Distribution of Car by Region").Render()
public ActionResult Index()
        {
            List<ErrorBarData> chartData = new List<ErrorBarData>
            {
               new ErrorBarData{ x= 2005, y= 28 },
               new ErrorBarData{ x= 2006, y= 25 },
               new ErrorBarData{ x= 2007, y= 26 }, 
               new ErrorBarData{ x= 2008, y= 27 },
               new ErrorBarData{ x= 2009, y= 32 },
               new ErrorBarData{ x= 2010, y= 35 }, 
               new ErrorBarData{ x= 2011, y= 30 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class ErrorBarData
        {
            public double x;
            public double y;
        }

Error bar direction

To change the direction of the error bars to plus, minus, or both sides, use the Direction property.

@Html.EJS().Chart("container").Series(sr =>
{
    sr.Type(Syncfusion.EJ2.Charts.ChartSeriesType.Line)
        .Name("Sales")
        .XName("x")
        .ErrorBar(error => error.Visible(true)
            .Mode(Syncfusion.EJ2.Charts.ErrorBarMode.Vertical)
            .Direction(Syncfusion.EJ2.Charts.ErrorBarDirection.Minus)
        )
        .Marker(marker => marker.Visible(true))
        .YName("y")
        .DataSource(ViewBag.dataSource).Add();
}).PrimaryXAxis(xaxis =>
     xaxis.Interval(1)
          .ValueType(Syncfusion.EJ2.Charts.ValueType.Category)
      ).PrimaryYAxis(yaxis =>
          yaxis.LabelFormat("{value}%")
            .Minimum(15)
            .Maximum(45)
      ).Title("Sales Distribution of Car by Region").Render()
public ActionResult Index()
        {
            List<ErrorBarData> chartData = new List<ErrorBarData>
            {
               new ErrorBarData{ x= 2005, y= 28 },
               new ErrorBarData{ x= 2006, y= 25 },
               new ErrorBarData{ x= 2007, y= 26 }, 
               new ErrorBarData{ x= 2008, y= 27 },
               new ErrorBarData{ x= 2009, y= 32 },
               new ErrorBarData{ x= 2010, y= 35 }, 
               new ErrorBarData{ x= 2011, y= 30 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class ErrorBarData
        {
            public double x;
            public double y;
        }

Customizing error bar cap

To customize the length, width, opacity, and fill color of the error bar caps, you can use the ErrorBarCap property.

@Html.EJS().Chart("container").Series(sr =>
{
    sr.Type(Syncfusion.EJ2.Charts.ChartSeriesType.Line)
        .Name("Sales")
        .XName("x")
        .ErrorBar(error => error.Visible(true)
            .ErrorBarCap(cap => cap.Length(10).Width(10).Color("#0000ff"))
        )
        .Marker(marker => marker.Visible(true))
        .YName("y")
        .DataSource(ViewBag.dataSource).Add();
}).PrimaryXAxis(xaxis =>
     xaxis.Interval(1)
          .ValueType(Syncfusion.EJ2.Charts.ValueType.Category)
      ).PrimaryYAxis(yaxis =>
          yaxis.LabelFormat("{value}%")
            .Minimum(15)
            .Maximum(45)
      ).Title("Sales Distribution of Car by Region").Render()
public ActionResult Index()
        {
            List<ErrorBarData> chartData = new List<ErrorBarData>
            {
               new ErrorBarData{ x= 2005, y= 28 },
               new ErrorBarData{ x= 2006, y= 25 },
               new ErrorBarData{ x= 2007, y= 26 }, 
               new ErrorBarData{ x= 2008, y= 27 },
               new ErrorBarData{ x= 2009, y= 32 },
               new ErrorBarData{ x= 2010, y= 35 }, 
               new ErrorBarData{ x= 2011, y= 30 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class ErrorBarData
        {
            public double x;
            public double y;
        }

Customizing error bar color

To customize the error bar color for individual errors, use the ErrorBarColorMapping property. You can also customize the vertical error, horizontal error, horizontal negative and positive error, and vertical negative and positive error for an individual point using the VerticalError, HorizontalError, HorizontalNegativeError, HorizontalPositiveError, VerticalNegativeError, and VerticalPositiveError properties.

@Html.EJS().Chart("container").Series(sr =>
{
    sr.Type(Syncfusion.EJ2.Charts.ChartSeriesType.Line)
        .Name("Sales")
        .XName("x")
        .ErrorBar(error => error.Visible(true)
            .ErrorBarColorMapping("color")
            .VerticalError("error")
        )
        .Marker(marker => marker.Visible(true))
        .YName("y")
        .DataSource(ViewBag.dataSource).Add();
}).PrimaryXAxis(xaxis =>
     xaxis.Interval(1)
          .ValueType(Syncfusion.EJ2.Charts.ValueType.Category)
      ).PrimaryYAxis(yaxis =>
          yaxis.LabelFormat("{value}%")
            .Minimum(15)
            .Maximum(45)
      ).Title("Sales Distribution of Car by Region").Render()
public ActionResult Index()
        {
            List<ErrorBarData> chartData = new List<ErrorBarData>
            {
                new ErrorBarData{ x= 2005, y= 28, color = "red", error = 4 },
                new ErrorBarData{ x= 2006, y= 25, color = "blue", error = 3 },
                new ErrorBarData{ x= 2007, y= 26, color = "green", error = 2 },
                new ErrorBarData{ x= 2008, y= 27, color = "orange", error = 1 },
                new ErrorBarData{ x= 2009, y= 32, color = "yellow", error = 3 },
                new ErrorBarData{ x= 2010, y= 35, color = "grey", error = 2 },
                new ErrorBarData{ x= 2011, y= 30, color = "aqua", error = 1 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
public class ErrorBarData
{
    public double x;
    public double y;
    public string color;
    public double error;
}

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.

@Html.EJS().Chart("container").SeriesRender("changeColor").Series(sr =>
{
    sr.Type(Syncfusion.EJ2.Charts.ChartSeriesType.Line)
        .Name("Sales")
        .XName("x")
        .ErrorBar(error => error.Visible(true))
        .Marker(marker => marker.Visible(true))
        .YName("y")
        .DataSource(ViewBag.dataSource).Add();
}).PrimaryXAxis(xaxis =>
     xaxis.Interval(1)
          .ValueType(Syncfusion.EJ2.Charts.ValueType.Category)
      ).PrimaryYAxis(yaxis =>
          yaxis.LabelFormat("{value}%")
            .Minimum(15)
            .Maximum(45)
      ).Title("Sales Distribution of Car by Region").Render()
 
<script>
    function changeColor(args) {
        args.fill = "#ff6347";
    }
</script>
public ActionResult Index()
        {
            List<ErrorBarData> chartData = new List<ErrorBarData>
            {
               new ErrorBarData{ x= 2005, y= 28 },
               new ErrorBarData{ x= 2006, y= 25 },
               new ErrorBarData{ x= 2007, y= 26 }, 
               new ErrorBarData{ x= 2008, y= 27 },
               new ErrorBarData{ x= 2009, y= 32 },
               new ErrorBarData{ x= 2010, y= 35 }, 
               new ErrorBarData{ x= 2011, y= 30 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class ErrorBarData
        {
            public double x;
            public double y;
        }

Point render

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

@Html.EJS().Chart("container").PointRender("changeColor").Series(sr =>
{
    sr.Type(Syncfusion.EJ2.Charts.ChartSeriesType.Line)
        .Name("Sales")
        .XName("x")
        .ErrorBar(error => error.Visible(true))
        .Marker(marker => marker.Visible(true))
        .YName("y")
        .DataSource(ViewBag.dataSource).Add();
}).PrimaryXAxis(xaxis =>
     xaxis.Interval(1)
          .ValueType(Syncfusion.EJ2.Charts.ValueType.Category)
      ).PrimaryYAxis(yaxis =>
          yaxis.LabelFormat("{value}%")
            .Minimum(15)
            .Maximum(45)
      ).Title("Sales Distribution of Car by Region").Render()
 
<script>
    function changeColor(args) {
        if (args.point.index % 2 !== 0) {
            args.fill = '#ff6347';
        }
        else {
            args.fill = '#009cb8';
        }
    }
</script>
public ActionResult Index()
        {
            List<ErrorBarData> chartData = new List<ErrorBarData>
            {
               new ErrorBarData{ x= 2005, y= 28 },
               new ErrorBarData{ x= 2006, y= 25 },
               new ErrorBarData{ x= 2007, y= 26 }, 
               new ErrorBarData{ x= 2008, y= 27 },
               new ErrorBarData{ x= 2009, y= 32 },
               new ErrorBarData{ x= 2010, y= 35 }, 
               new ErrorBarData{ x= 2011, y= 30 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class ErrorBarData
        {
            public double x;
            public double y;
        }

See Also