All very good suggestions, they will help prioritize what to do next! Yes, charts only use d3. By now the charting code has become a small d3-based js charting

All very good suggestions, they will help prioritize what to do next! Yes, charts only use d3. By now the charting code has become a small d3-based js charting library. Before I continue working on this I'm trying to understand who the potential users are and how they would use software like this. Thx for your comment.