# Customize Bubble Charts in Presentations in .NET

> Create and customize powerful bubble charts in PowerPoint with Aspose.Slides for .NET to enhance your data visualization easily.

Source: https://docs.aspose.com/slides/net/bubble-chart/
Updated: 2026-08-05


## **Overview**

This article shows how to work with bubble charts in Aspose.Slides. It covers two specific customization options: scaling bubble sizes through the `BubbleSizeScale` property and controlling how bubble size values are represented through the `BubbleSizeRepresentation` property.

The examples demonstrate how to create a bubble chart, adjust its size scaling, and switch the bubble size representation to use width. The article also includes a short FAQ section that clarifies support for the “Bubble with 3-D” chart type, notes that practical chart limits depend on performance and the target PowerPoint version, and explains that export preserves the chart’s appearance through the Aspose.Slides rendering engine.

## **Bubble Chart Size Scaling**
Aspose.Slides for .NET provides support for Bubble chart size scaling. In Aspose.Slides for .NET **IChartSeries.BubbleSizeScale** and **IChartSeriesGroup.BubbleSizeScale** properties have been added. Below sample example is given. 

```c#
using Aspose.Slides;
using Aspose.Slides.Charts;

using (Presentation pres = new Presentation())
{
	IChart chart = pres.Slides[0].Shapes.AddChart(ChartType.Bubble, 100, 100, 400, 300);
	chart.ChartData.SeriesGroups[0].BubbleSizeScale = 150;
	pres.Save("Result.pptx",Aspose.Slides.Export.SaveFormat.Pptx);
}
```




## **Represent Data as Bubble Chart Sizes**
Property **BubbleSizeRepresentation** has been added to IChartSeries, IChartSeriesGroup interfaces, and related classes. **BubbleSizeRepresentation** specifies how the bubble size values are represented in the bubble chart. Possible values are: **BubbleSizeRepresentationType.Area** and **BubbleSizeRepresentationType.Width**. Accordingly, **BubbleSizeRepresentationType** enum has been added to specify the possible ways to represent data as bubble chart sizes. Sample code is given below.

```c#
using Aspose.Slides;
using Aspose.Slides.Charts;
using Aspose.Slides.Export;

using (Presentation pres = new Presentation())
{
    IChart chart = pres.Slides[0].Shapes.AddChart(ChartType.Bubble, 50, 50, 600, 400, true);
    chart.ChartData.SeriesGroups[0].BubbleSizeRepresentation = BubbleSizeRepresentationType.Width;
    pres.Save("Presentation_BubbleSizeRepresentation.pptx", SaveFormat.Pptx);
}
```

## **FAQ**

### Is a "bubble chart with 3-D effect" supported, and how does it differ from a regular one?

Yes. There is a separate chart type, "Bubble with 3-D." It applies 3-D styling to the bubbles but does not add an additional axis; the data remain X-Y-S (size). The type is available in the [chart type](https://reference.aspose.com/slides/net/aspose.slides.charts/charttype/) enumeration.

### Is there a limit on the number of series and points in a bubble chart?

There is no hard limit at the API level; constraints are determined by performance and the target PowerPoint version. It is recommended to keep the number of points reasonable for readability and rendering speed.

### How will export affect the appearance of a bubble chart (PDF, images)?

Export to supported formats preserves the chart’s appearance; rendering is performed by the Aspose.Slides engine. For raster/vector formats, general chart-graphics rendering rules apply (resolution, anti-aliasing), so choose sufficient DPI for printing.