This example shows a Gantt chart built with Plotly.js, displaying four tasks across Vancouver, Portland, San Francisco, and Seattle as horizontal bars with date ranges. The visualization uses Plotly’s `newPlot` API with bar traces in horizontal orientation, where each bar’s x-coordinates are date strings and y-coordinates label the cities. The layout configures the x-axis as a date type with angled tick labels, while the y-axis uses automatic margin adjustment. The chart is embedded in a styled container with fixed dimensions, and the color scheme applies semi-transparent blue markers with solid borders.