This example visualizes operating room schedules as an animated stacked bar chart, showing patient transfer, preparation, operation, and cleanup phases across multiple groups over time. Each horizontal bar represents a procedure timeline, with colored segments for planned versus actual durations. The chart uses D3 v5 with SVG transitions, loading CSV data and mapping it through a linear scale for time and an ordinal scale for color-coded groups. Rectangles animate their width and x-position on load to reveal the temporal structure. Tooltips and hover effects are configured through the d3-tip library and CSS styling.