Final_Project_Interactive_Bar_Chart
This interactive bar chart displays the prevalence of various health-related measures across demographic and temporal categories. Users can switch between different data groupings—such as year, sex, race, employment, and medical history—using on-screen buttons. The visualization is built with D3 v7 and renders as an SVG, updating bars and axes through a general update pattern that removes and recreates the chart. Data values are mapped on a linear scale from 0 to 1, showing proportions for each selected category.