Dendrogram

Cluster layout where leaves are aligned. Used for clustering results and taxonomies.

When to Use

• Hierarchical clustering results
• Phylogenetic trees, taxonomies
• When leaf alignment is more important than even spacing

Difference from Tree Diagram

A tree diagram spaces nodes evenly. A dendrogram (cluster layout) aligns all leaves at the same depth, making it better for showing clustering distances.

Example

from d3_bridge import Dendrogram

chart = Dendrogram(
    data={
        "name": "Animals",
        "children": [
            {"name": "Mammals", "children": [
                {"name": "Cat", "value": 1},
                {"name": "Dog", "value": 1},
                {"name": "Horse", "value": 1},
            ]},
            {"name": "Birds", "children": [
                {"name": "Eagle", "value": 1},
                {"name": "Sparrow", "value": 1},
            ]},
        ],
    },
    title="Animal Taxonomy",
)

Parameters

Parameter	Type	Default	Description
data	dict or list	—	Hierarchical data
orientation	str	"horizontal"	"horizontal" or "vertical"
node_radius	float	4	Node circle radius
link_style	str	"curve"	"curve", "step", "straight"
value_field	str	"value"	Value field
name_field	str	"name"	Label field
labels	bool	True	Show labels on leaf nodes