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75. D3 Removing Values

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Aamakanju@nyit.edu
Last edited Feb 23, 2026
Created on Feb 23, 2026

Clicking the text above the chart removes the first value from a 20-point dataset, shifting the remaining bars left and shortening the tallest bar as the y-axis rescales. Built with D3.js version 4.5.0, the visualization uses SVG rectangles and labels, with `d3.scaleBand` and `d3.scaleLinear` mapping data to positions. The update pattern demonstrates the enter, update, and exit selections, merging new and existing elements with `selection.merge`, then animating transitions over 500 milliseconds via `transition.attr` and `.remove()`.

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