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This article explains how to create a histogram chart in Excel using Syncfusion Excel (XlsIO) library. What is a histogram chart?Histogram shows the frequencies within a distribution. Each column of the chart is called a bin, which can be changed further to analyze the data.
Histogram Chart To create a histogram chart in Excel using XlsIO, you need to do the following steps. Steps to create histogram chart:Step 1: Initialize chartCreate a chart object by calling the worksheet.Charts.Add method and specify the chart type to ExcelChartType.Histogram enum value. C# //Create the chart IChartShape chart = worksheet.Charts.Add(); //Set chart type to Histogram chart.ChartType = ExcelChartType.Histogram;
Step 2: Assign dataSet a range of data from the worksheet to chart’s DataRange property. To plot the series values in column and categories in row, set chart’s IsSeriesInRows property to false. C# //Set region of Chart data chart.DataRange = worksheet["A1:A15"]; //Set chart series in column for assigned data region chart.IsSeriesInRows = false;
Step 3: Apply basic chart elementsAdd the basic elements like chart title, data labels and legend with the below list of properties.
C# //Apply chart elements //Set Chart Title chart.ChartTitle = "Histogram Chart"; //Set Legend chart.HasLegend = false; //Set Datalabels IChartSerie serie = chart.Series[0]; serie.DataPoints.DefaultDataPoint.DataLabels.IsValue = true; serie.DataPoints.DefaultDataPoint.DataLabels.Position = ExcelDataLabelPosition.Outside;
Applicable properties of histogram chartBelow is the list of other properties that is applicable for a histogram chart.
Note:
To know more about creating charts with various settings using Syncfusion Excel (XlsIO) library, please refer the documentation. The following C#/ VB.NET complete code snippet shows the creation of histogram chart using XlsIO. C# using Syncfusion.XlsIO;
using System.Reflection;
using System.IO;
namespace ChartSample
{
class Program
{
static void Main(string[] args)
{
using (ExcelEngine excelEngine = new ExcelEngine())
{
IApplication application = excelEngine.Excel;
application.DefaultVersion = ExcelVersion.Excel2016;
//Open existing workbook with data entered
Assembly assembly = typeof(Program).GetTypeInfo().Assembly;
Stream fileStream = assembly.GetManifestResourceStream("ChartSample.InputTemplate.xlsx");
IWorkbook workbook = application.Workbooks.Open(fileStream);
IWorksheet worksheet = workbook.Worksheets[0];
//Initialize chart
IChartShape chart = worksheet.Charts.Add();
chart.ChartType = ExcelChartType.Histogram;
//Assign data
chart.DataRange = worksheet["A1:A15"];
chart.IsSeriesInRows = false;
chart.PrimaryCategoryAxis.BinWidth = 5;
//Apply chart elements
//Set Chart Title
chart.ChartTitle = "Histogram Chart";
//Set Datalabels
IChartSerie serie1 = chart.Series[0];
serie1.DataPoints.DefaultDataPoint.DataLabels.IsValue = true;
serie1.DataPoints.DefaultDataPoint.DataLabels.Position = ExcelDataLabelPosition.Outside;
serie1.SerieFormat.CommonSerieOptions.GapWidth = 5;
//Set Legend
chart.HasLegend = false;
//Positioning the chart in the worksheet
chart.TopRow = 8;
chart.LeftColumn = 1;
chart.BottomRow = 23;
chart.RightColumn = 8;
//Saving and closing the workbook
Stream stream = File.Create("Output.xlsx");
workbook.SaveAs(stream);
}
}
}
}
VB.NET Imports Syncfusion.XlsIO
Imports System.Reflection
Imports System.IO
Namespace ChartSample
Class Program
Public Shared Sub Main(ByVal args As String())
Using excelEngine As ExcelEngine = New ExcelEngine()
Dim application As IApplication = excelEngine.Excel
application.DefaultVersion = ExcelVersion.Excel2016
'Open existing workbook with data entered
Dim assembly As Assembly = GetType(Program).GetTypeInfo.Assembly
Dim fileStream As Stream = assembly.GetManifestResourceStream("ChartSample.InputTemplate.xlsx")
Dim workbook As IWorkbook = application.Workbooks.Open(fileStream)
Dim worksheet As IWorksheet = workbook.Worksheets(0)
'Initialize chart
Dim chart As IChartShape = worksheet.Charts.Add
chart.ChartType = ExcelChartType. Histogram
'Assign data
chart.DataRange = worksheet("A1:A15")
chart.IsSeriesInRows = False
chart.PrimaryCategoryAxis.BinWidth = 5
'Apply chart elements
'Set Chart Title
chart.ChartTitle = "Histogram Chart"
'Set Datalabels
Dim serie1 As IChartSerie = chart.Series(0)
serie1.DataPoints.DefaultDataPoint.DataLabels.IsValue = True
serie1.DataPoints.DefaultDataPoint.DataLabels.Position = ExcelDataLabelPosition.Outside
serie1.SerieFormat.CommonSerieOptions.GapWidth = 5
'Set Legend
chart.HasLegend = False
'Positioning the chart in the worksheet
chart.TopRow = 8
chart.LeftColumn = 1
chart.BottomRow = 23
chart.RightColumn = 8
'Saving and closing the workbook
Dim stream As Stream = File.Create("Output.xlsx")
workbook.SaveAs(stream)
End Sub
End Class
End Namespace
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