Sunburst

Concentric rings showing hierarchy from center outward. Interactive drill-down.

When to Use

• Exploring nested categories (file system, org structure, classification)
• When breadcrumb-style navigation through levels is useful
• Showing depth and proportion simultaneously

Example

from d3_bridge import Sunburst

chart = Sunburst(
    data={
        "name": "Sales",
        "children": [
            {"name": "Online", "children": [
                {"name": "Desktop", "value": 450},
                {"name": "Mobile", "value": 320},
                {"name": "Tablet", "value": 80},
            ]},
            {"name": "Retail", "children": [
                {"name": "Store A", "value": 200},
                {"name": "Store B", "value": 150},
            ]},
        ],
    },
    title="Sales Channels",
)

Parameters

Parameter	Type	Default	Description
data	dict or list	—	Hierarchical data
inner_radius	float	0	Inner radius (0 = from center)
pad_angle	float	0.01	Gap between slices
corner_radius	float	4	Rounded corners on arcs
value_field	str	"value"	Value field
name_field	str	"name"	Label field
labels	bool	True	Show labels on arcs