Data visualization lies at the intersection of data science and storytelling, revealing hidden patterns, trends, and outliers often concealed within spreadsheets and databases. “Data Visualization with Vega-Altair 5” explores Altair, a Python library that offers a unique and declarative approach to data visualization. This method allows creators to focus on what to visualize rather than how to render it, elegantly simplifying the process for both beginners and experienced data scientists. Although this book does not cover every aspect of the library, it nevertheless serves as a comprehensive guide, rich with hands-on examples that will help you create complex, interactive, multi-view visualizations. By the book’s end, readers will possess the skills to integrate sophisticated visualizations into web applications or develop them into independent tools with minimal additional effort.