23. D3 Bar Chart Offset

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23. D3 Bar Chart Offset

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Last edited Feb 12, 2026

Created on Feb 9, 2026

A D3.js bar chart displays an array of twenty numeric values as SVG rectangles. The bars are arranged horizontally, with each one positioned using a small offset to create consistent spacing between them. While all rectangles share the same starting y-coordinate and fixed dimensions, the varying data values are not yet mapped to bar heights. Instead, the visualization demonstrates the foundational step of binding a dataset to SVG elements, using the `d3.select`, `append`, and `attr` methods to generate the chart structure.

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