This reusable scatter plot visualizes fitness tracking data, plotting relationships between calorie intake, protein intake, and mental wellbeing scores from a CSV dataset. The chart uses D3 v7 to render SVG circles with configurable axes, margins, and data accessor functions. The code demonstrates a modular chart factory pattern with setters for width, height, and value fields, allowing users to easily swap which metrics appear on each axis. Axis labels update dynamically based on the selected fields, while steelblue semi-transparent points highlight distribution patterns without animation.