Collapsible tree diagram in v4

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Collapsible tree diagram in v4

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Last edited Oct 12, 2017

Created on Oct 24, 2016

A collapsible tree diagram presents a hierarchical dataset as an interactive node-link visualization. Users can click any parent node to collapse the subtree beneath it, hiding its descendants, and click again to expand it. The diagram uses smooth CSS transitions for animation as nodes and links move to their new positions. Built with the d3.v4 library, it uses `d3.hierarchy` and `d3.tree()` to compute the layout, and SVG elements for rendering. Node circles and connecting paths are styled with CSS, and the dataset is a simple JavaScript object with nested `children` arrays.

AI-generated description

This is a d3.js tree diagram that incldes an interactive element as used as an example in the book D3 Tips and Tricks v4.x.

Any parent node can be clicked on to collapse the portion of the tree below it, on itself. Conversly, it can be clicked on again to regrow.

It is derived from the Mike Bostock Collapsible tree example and updated to use v4.

Kudos and thanks also go out to Soumya Ranjan for steering me in the fight direction for the diagonal solution.

mit Licensed

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