Pie charts are a powerful way to visualize how different parts contribute to a whole. In Recharts, you use the PieChart component to create these visualizations. The structure of a basic pie chart in Recharts involves several key components: Pie, Cell, and your data mapping.

The PieChart component acts as the container for your chart. Inside this container, you place one or more Pie components. Each Pie represents a dataset and determines how slices are drawn. You provide the data to the Pie as an array of objects, where each object represents a slice with properties such as name and value.

To control the appearance of individual slices, you use the Cell component inside the Pie. By mapping over your data array, you can render a Cell for each slice. This lets you set properties like fill to assign unique colors to each part of the pie, making it easy to distinguish between segments.

For example, you might have data like this:

const data = [
  { name: "Group A", value: 400 },
  { name: "Group B", value: 300 },
  { name: "Group C", value: 300 },
  { name: "Group D", value: 200 }
];

You can then map this data to slices by passing it to the Pie component and rendering a Cell for each item, assigning a different color to each slice. This mapping ensures that each part of your data is clearly represented as a slice of the pie.

Customizing your pie chart can make it much clearer and more visually appealing. To change slice colors, assign a unique fill color to each Cell. You can also show labels on each slice by enabling the label prop on the Pie component, which helps users see what each slice represents directly on the chart. Adding a Legend component below or beside your chart further clarifies what each color means, making your data easy to interpret at a glance.

By combining these features—mapping data to slices, customizing colors, showing labels, and adding a legend—you create pie charts that are both informative and visually engaging.

When customizing your pie chart, keep these tips in mind:

• Assign a unique color to each slice using the fill property on each Cell;
• Use the label prop on the Pie component to display labels directly on the slices for clarity;
• Add a Legend component to help users quickly identify what each color represents;
• Choose colors that are visually distinct and accessible to all users.