This visualization uses the Pima Indians Diabetes dataset to show the relationship between BMI and plasma glucose concentration, with each point colored by patient age on a yellow-to-red scale. Crosses indicate high diabetes risk while circles represent low risk. The chart includes axis labels and gridlines for readability. Built with D3 v7, the code uses `csvParse` for data loading, `scaleLinear` for positioning, `scaleSequential` with `interpolateYlOrRd` for age-based coloring, and custom `symbol` shapes for outcome encoding.