I've used both Rickshaw and NVD3, was not happy with the quality or APIs of either project and ended up building directly on D3. Unfortunate since I don't feel

I've used both Rickshaw and NVD3, was not happy with the quality or APIs of either project and ended up building directly on D3. Unfortunate since I don't feel like D3 has an ideal API for charting and a simpler abstraction would be desired.