Circles with D3
This example demonstrates how to draw a scatter of circles on an SVG canvas using D3.js version 7.8.5. It shows seven colored circles positioned across the container, each with varying radii and opacity, driven by a static data array. The code employs D3’s `select` function, data joins via `.selectAll().data().join()`, and method chaining with `.attr()` to set circle properties, while sizing the SVG dynamically based on container dimensions.