Treemap from bl.ocks.org

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Treemap from bl.ocks.org

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Last edited Apr 22, 2020

Created on Apr 22, 2020

This treemap visualizes the hierarchical structure of the Flare data set, encoding each leaf node’s size by its rectangular area and grouping related categories by color. The view toggles between summing node values by size or by count, with animated transitions updating the layout over 750 milliseconds. Built with D3 v4, the example uses `d3.treemap`, `d3.hierarchy`, `d3.scaleOrdinal`, and `d3.treemapResquarify`, rendering the hierarchy as SVG rects and text elements with clip paths.

AI-generated description

An example of porting a work from bl.ocks.org into VizHub. This is a direct port of Mike Bostock’s Block: Treemap, modified only to split into separate files, and to fit in the space available.

MIT Licensed

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This treemap visualizes the hierarchical structure of the Flare data set, using nested rectangles whose areas encode each leaf’s size value. Users can toggle between summing by size or by count via radio buttons, which triggers a smooth 750ms transition of the rectangles. The visualization is built with D3 v4, using `d3.treemap` with the resquarify tiling function, `d3.hierarchy`, and `d3.scaleOrdinal` for color coding by parent category. The SVG rendering includes clip-paths for text labels and tooltip titles on each leaf.

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