d3js workshop - circles

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d3js workshop - circles

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Last edited Oct 19, 2017

Created on Oct 19, 2017

Three SVG circles sit in a row inside an 720x120 canvas, built with D3 v3’s selection and data-join pattern. The code defines a static dataset `[10, 20, 30]` and uses `append`, `attr`, and `style` to set each circle’s radius, vertical position, and horizontal offset based on its data value. A commented sequence demonstrates animated transitions: first changing fill color to red with a 2-second duration, then adding per-element delays, and finally combining color, radius, and vertical movement in one transition. All animation code remains inactive, showing only the initial static circles.

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