ios-charts是一款优秀 Android 图表开源库 MPAndroidChart 的 Swift 语言实现版（支持 Objective-C 和 Swift 调用）。缺省提供的示例代码为 Objective-C。

核心特性：

• Scaling on both axes (with touch-gesture, axes separately or pinch-zoom)
• Dragging / Panning (with touch-gesture)
• Combined-Charts (line-, bar-, scatter-, candle-data)
• Dual (separate) Y-Axis
• Finger drawing (draw values into the chart with touch-gesture)
• Highlighting values (with customizeable popup-views)
• Multiple / Separate Axes
• Save chart to camera-roll
• Predefined color templates
• Legends (generated automatically, customizeable)
• Customizeable Axes (both x- and y-axis)
• Animations (build up animations, on both x- and y-axis)
• Limit lines (providing additional information, maximums, ...)
• Fully customizeable (paints, typefaces, legends, colors, background, gestures, dashed lines, ...)

图表类型:

Screenshots are currently taken from the original repository, as they render exactly the same :-)

• LineChart (with legend, simple design)

• LineChart (with legend, simple design)

• LineChart (cubic lines)

• LineChart (single DataSet)

• Combined-Chart (bar- and linechart in this case)

• BarChart (with legend, simple design)

• BarChart (grouped DataSets)

• Horizontal-BarChart

• PieChart (with selection, ...)

• ScatterChart (with squares, triangles, circles, ... and more)

• CandleStickChart (for financial data)

• RadarChart (spider web chart)

文档

Currently there's no need for documentation for the iOS version, as the API is 95% the same as on Android.
You can read the official MPAndroidChart documentation here: Wiki

Or you can see the ChartsDemo project and learn the how-tos from it.

项目主页：http://www.open-open.com/lib/view/home/1427534899715