A line chart is an effective way to display trends over time by connecting a series of data points with straight lines. It’s commonly used for tracking changes in stock prices, temperatures, website traffic, or any data that varies continuously. Each point represents a value at a specific moment, and the line helps highlight changes and patterns.

With Swift Charts framework, creating such visualizations in SwiftUI is both simple and enjoyable. We’ve explored how BarMark can be used to build informative bar charts. In this chapter, we turn our attention to LineMark, which allows us to create smooth, connected line charts.