Customize Bubble Charts in Presentations with Python

Bubble Chart Size Scaling

Aspose.Slides for Python via .NET provides support for Bubble chart size scaling. In Aspose.Slides for Python via .NET ChartSeries.bubble_size_scale and ChartSeriesGroup.bubble_size_scale properties have been added. Below sample example is given. 

import aspose.slides.charts as charts
import aspose.slides as slides

with slides.Presentation() as pres:
	chart = pres.slides[0].shapes.add_chart(charts.ChartType.BUBBLE, 100, 100, 400, 300)
	chart.chart_data.series_groups[0].bubble_size_scale = 150
	pres.save("Result.pptx", slides.export.SaveFormat.PPTX)

Represent Data as Bubble Chart Sizes

Property bubble_size_representation has been added to ChartSeries, ChartSeriesGroup classes. bubble_size_representation 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.

import aspose.slides.charts as charts
import aspose.slides as slides

with slides.Presentation() as pres:
    chart = pres.slides[0].shapes.add_chart(charts.ChartType.BUBBLE, 50, 50, 600, 400, True)
    chart.chart_data.series_groups[0].bubble_size_representation = charts.BubbleSizeRepresentationType.WIDTH
    pres.save("Presentation_BubbleSizeRepresentation.pptx", slides.export.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 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.