This animated bar chart visualizes the distribution of drug categories across survey responses. The visualization loads a CSV dataset containing two columns—s_category and drug_cat—and renders a grouped bar chart using D3 v4 with SVG. The chart animates between two states, likely comparing the frequency of drug categories by s_category groups. The bars are color-coded and transition smoothly to reflect the data, with axes and labels supporting readability. The animation highlights changes in the dataset, making it easy to compare category distributions dynamically.