Sankey

Abstraction: Creating Sankey flow diagrams in Plotly Python

Key points:

• Sankey diagrams are created with go.Sankey using node and link dicts specifying source/target indices and values
• Node position can be controlled via node.x and node.y; arrangement modes include snap, perpendicular, freeform, and fixed
• Link hover colors are customizable per-link via link.hovercolor (new in Plotly 5.19)
• customdata on nodes and links enables rich hovertemplate annotations with arbitrary extra fields
• Node alignment supports left, right, center, and justify (default); justify moves terminal nodes to the right
• Figures created with go.Figure are directly embeddable in Dash apps via dcc.Graph

Connections: Plotly · Dash · Data Visualization · Flow Diagrams

Source: https://plotly.com/python/sankey-diagram/