How to create Excel scatter with smooth lines chart in C#, VB.NET?

This article explains how to create a scatter with smooth line chart in Excel using XlsIO.

What is scatter with smooth line chart?

A scatter with smooth line chart is used to compare at least two sets of values or pairs of data. The values are represented with a connected smooth line.

       Scatter with smooth line chart created using XlsIO

To create a scatter with smooth line chart in Excel using XlsIO, you need to do the following steps.

Steps to create scatter with smooth line chart

1. Initialize chart

Create a chart object by calling the worksheet.Charts.Add method and specify the chart type to ExcelChartType.Scatter_SmoothedLine enum value.

2. Assign data

Set 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.

3. Apply basic chart elements

Add the basic elements like chart title, data labels and legend.

• ChartTitle of chart object.
• Set DataLabels via DefaultDataPoint.
• Set TRUE to chart’s HasLegend property to show the legend. Else FALSE.

Applicable properties for scatter with smooth lines chart

Property applicable for a scatter with smooth line chart along with common line properties is

1.  IsVaryColor

NOTE: Applying properties apart from the mentioned property and line properties might throw exception or the changes will not be reflected in the output document because those properties are not related to scatter chart.

Download Complete Sample

Download input file with data

To know more about creating charts with various settings using XlsIO, please refer the documentation.

The following C#/ VB.NET complete code snippet shows the creation of scatter with smooth line chart using XlsIO.

C#

VB