如何计算跟踪时nutiteq的平均距离，速度和时间

I am experimenting using nutiteq , as i found it a better alternative working on 3d maps.I want to learn every bit of it.So I am making a simple project where I can calculate the speed distance and time from its current location simultaneously on its tracking. I applied some logics but failed.Can any of you help me.I am experimenting using nutiteq , as i found i