{"version":"1.0","type":"rich","title":"building a heatmap","description":"This example demonstrates a basic heatmap-building workflow using D3.js v5. It loads a CSV file via `d3.csv` and preprocesses the data by parsing string values into floating-point numbers with a custom callback function. The code logs the sum of the x and y coordinates for each row to the console, showing how raw data is read and transformed. A large \"Hello VizHub!\" message is displayed on screen, styled with an Ubuntu font and a dark blue background. The project relies on ES6 modules and external stylesheets for its structure and presentation.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"","width":960,"height":500,"cache_age":3600}