安卓图表引擎的源代码，弥补了安卓图表功能的不足-the src of achartengine of android.

android java图表绘制引擎，有源码，测试通过，绘制效率挺高的-android java charting engine, there is source code, test passed, rendering efficiency pricey

AChartEngine是为android应用而设计的绘图工具库。目前该库的最新稳定版本是0.7，支持绘制以下类型的图表: ?line chart ?area chart ?scatter chart ?time chart ?bar chart ?pie chart ?bubble chart ?doughnut chart ?range (high-low) bar chart ?dial chart / gauge ?combin