Canvas is a vector drawing API. Scaling a drawing to retina resolution or 300 DPI for printing is trivial.
Ultimately if you want to draw truly giant giant data sets, you need WebGL. What's missing isn't a new browser drawing API, but a good WebGL charting library.
Ultimately if you want to draw truly giant giant data sets, you need WebGL. What's missing isn't a new browser drawing API, but a good WebGL charting library.