用Python在演示文稿中自定义气泡图

Bubble Chart Size Scaling

Aspose.Slides for Python via .NET 提供对气泡图大小缩放的支持。在 Aspose.Slides for Python via .NET 中已添加 ChartSeries.bubble_size_scale 和 ChartSeriesGroup.bubble_size_scale 属性。下面给出示例。

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

已在 ChartSeries、ChartSeriesGroup 类中添加属性 bubble_size_representation。bubble_size_representation 指定气泡图中气泡大小值的表示方式。可能的取值为 BubbleSizeRepresentationType.AREA 和 BubbleSizeRepresentationType.WIDTH。因此，已添加 BubbleSizeRepresentationType 枚举，以指定将数据表示为气泡图大小的可能方式。下面给出示例代码。

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.