This example demonstrates a reusable bar-code chart pattern built with D3.js v5, displaying multiple rows of temporal data as horizontal barcode-like visualizations. Each row represents a distinct data series with randomly generated date intervals using an exponential distribution. The code implements a modular chart function that creates SVG elements within styled containers, using `d3.scaleTime()` to map date ranges to pixel positions. The example highlights the transition from D3 v3 to v5 practices, showcasing proper data binding, scale construction, and container management in a reusable component pattern.