Using data() enter and exit in D3

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Using data() enter and exit in D3

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Last edited Oct 1, 2011

Created on Oct 1, 2011

Four blue circles represent an initial dataset of objects with IDs and x/y coordinates. Using D3's data join with key functions, the example updates individual circles by changing their positions and colors through chained transitions, including a removal that fades one circle out before deleting it. Afterward, a reset function restores the original dataset, using `.enter()`, `.exit()`, and `.remove()` to synchronize the circles with the new data array. The visualization demonstrates D3's enter/exit pattern for adding, updating, and removing DOM elements based on data changes.

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