{"version":"1.0","type":"rich","title":"A6: Sequential Bar Chart","description":"This example shows the number of delayed flights for each US airport, with bars colored on a blue sequential scale to highlight the magnitude of delays. A vertical bar chart plots airport codes on the x-axis and delayed flight counts on the y-axis, with higher values rendered in darker blues. The visualization is built with D3 v6, using `d3.scaleBand` for the categorical axis, `d3.scaleLinear` for the numeric range, and `d3.scaleSequential` with `d3.interpolateBlues` for color encoding. Data is loaded from a CSV file via `d3.csv`, and a color legend is added using the `d3-legend` library with threshold labels.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/a16d4f4458e24ac19133311d32cd9bbf?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}