D3 DataBinding

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D3 DataBinding

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Last edited Aug 29, 2018

Created on Aug 29, 2018

This example demonstrates a simple bar chart that binds JSON data to SVG elements, showing municipal census values as horizontally sorted bars. The visualization uses D3.js v5 to load data from a GitHub-hosted JSON file and renders two separate SVG containers, though only the first is populated. The code employs D3’s data join pattern with `selectAll`, `data`, and `enter` to append rectangles for bars and text labels for municipality names. A linear scale maps the data domain to pixel widths, while bar heights are fixed and y-positions are computed by index. The chart sorts data in descending order by census value before rendering.

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