D3 Selection

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Last edited Apr 12, 2023

Created on Apr 11, 2023

This example demonstrates a dynamic set of 50 circles that move vertically in a wave-like pattern using a cosine function. The animation updates every 50 milliseconds, with each circle’s y-coordinate shifting based on its x-position and a time increment. The visualization shows D3’s selection and update capabilities, where circles are appended to the SVG canvas and their attributes (cx, cy, fill) are updated in place. The code uses `d3.select`, `d3.range`, and D3’s enter/update selection API to efficiently manage the animated data.

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A bare minimum HTML page demonstrating use of CSS and JavaScript.

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