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A Circle Bubble of BMW volume of sales with Hover

✓ Published3🌍 Public
BBismark Kofi Owusu Sarfo
Last edited Nov 13, 2025
Created on Nov 13, 2025

This animated bubble chart visualizes BMW sales volumes across global markets, plotting each model as a circle whose size reflects total sales for a given year. The visualization cycles through years from 2010 to 2024, with a large year label updating as the animation progresses. Users can toggle country filters via checkbox controls or pause the animation with a play/pause button. Built with D3.js v7, the chart uses `d3.rollups` for data aggregation, `d3.scaleSqrt` for bubble sizing, and SVG elements with animated transitions. Hovering over a bubble reveals detailed sales information via a tooltip.

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MIT Licensed

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