DataViz Sec1
This example renders an interactive scatterplot of simulated data points, arranged to gradually form a smiley face as the visualization progresses. It uses a force-directed layout via `d3.forceSimulation` to position nodes, with each point’s color and size mapped from its initial random coordinates. The underlying data is generated procedurally, and the canvas drawing leverages D3’s selection and transition methods to update node positions in real time. The piece demonstrates how a simple dataset can be transformed into a playful, recognizable shape through iterative physics-based adjustments.