{"version":"1.0","type":"rich","title":"Assignment 4: histogram graph with D3","description":"This histogram visualizes the distribution of National Aviation System delays, using a neutral steelblue color palette to present the data objectively. It plots the number of flights across delay ranges for a filtered airlines dataset, with the y-axis starting at zero to avoid exaggerating differences. The visualization is built with D3 v7, using d3.csv to load the data, d3.histogram to bin values, and d3.scaleLinear for both axes. D3 annotations add callout labels explaining design choices like consistent bar widths, while a hover tooltip provides interactive detail.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/df72eb825fc344139d825b3fc8f2004a?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}