This example demonstrates linked views for character frequency analysis. A user enters text, which generates a donut chart showing the distribution of vowels, consonants, and punctuation, alongside a bar chart displaying the count for a selected character. The donut chart uses D3’s `d3.pie` and `d3.arc` for its ring layout, while the bar chart uses D3 scales and SVG paths. Bootstrap styles the interface, and React scaffolds the project. All data derives from user-provided text input.