swift-charts

Build data visualizations with bar, line, area, point, pie, and donut charts in Swift. Build data visualizations with Swift Charts targeting iOS 26+. Compose marks inside a Chart container, configure axes and scales with view modifiers, and use vectorized plots for large datasets. See references/charts-patterns.md for extended patterns, accessibility, and theming guidance. Run through the Review Checklist at the end of this file. Use for large datasets (1000+ points). Accept entire collections or functions. Apply KeyPath-based modifiers before simple-value modifiers: - Compose marks ( BarMark , LineMark , PointMark , AreaMark , RuleMark , RectangleMark , SectorMark ) inside a Chart container and configure axes, scales, and legends with view modifiers - Support for multi-series encoding via .foregroundStyle(by:) , symbol and line style variations, and stacked or grouped layouts - Selection, scrolling, and annotation capabilities (iOS 17+); vectorized plots ( BarPlot , LinePlot , AreaPlot , PointPlot ) for datasets exceeding 1000 points (iOS 18+) - Specialized patterns for heat maps, Gantt charts, sparklines, threshold lines, and function plotting with explicit domain control - Comprehensive review checklist and common-mistake guidance covering data model setup, accessibility, Dynamic Type compatibility, and performance optimization - Workflow - Chart Container - Mark Types -...