{"version":"1.0","type":"rich","title":"the number of different case status in different states","description":"This visualization is a heatmap showing the number of immigration case petitions for each case status across different U.S. states, using a red color scale to indicate petition counts. It is built with React and D3 v5, leveraging the vega-lite-api’s `markRect` encoding to map states to the x-axis, case statuses to the y-axis, and petition counts to color intensity. The data comes from the Office of Foreign Labor Certification’s H-1B program records, loaded via `d3.csv`, with tooltips revealing exact counts and statuses.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/3e497a0b5b1e4c828520c873ae51b63c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}