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Fork of D3 Tree with Multiple Parents

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Pprogrammerd3
Last edited Jul 26, 2022
Created on Jul 26, 2022

This example displays a tree diagram with multiple parent nodes, using custom data that maps topics like "Government" and "Stock market" to shared children. It builds the hierarchy with `d3.hierarchy`, applies a `d3.tree` layout, and renders links as horizontal paths via `linkHorizontal`. The code uses `_.uniq` from Underscore to deduplicate nodes, then manually recalculates x and y positions so shared children appear once. Interactive zooming via `d3.zoom` and animated transitions on node positions and opacity are included, with SVG text elements showing labels.

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