How can you use tree maps to visualize hierarchical data in R&D?
Hierarchical data is common in research and development (R&D) projects, where you may need to organize and compare different levels of information, such as categories, subcategories, and values. Tree maps are a type of quantitative data visualization that can help you display hierarchical data in a compact and intuitive way. In this article, you will learn how to use tree maps to visualize hierarchical data in R&D using the R programming language and the treemap package.