Hi @fabioticconi - it is still being maintained. I am using it myself regularly, and particularly using the primitives (e.g. Scale and Dataset to build custom visualisations).
Major improvements are a bit sporadic at the moment due to time commitments.
At the moment the only way I can think of to achieve the fit line would be to calculate the fit yourself and overlay a line plot on a point plot.
hey, thanks for the reply! Yes, the fit is no issue. Overlaying seems just what I need - although it would be nice to have “ribbons” for the confidence intervals.
You could generate a dataset with 3 series - one for the upper confidence, one for the best fit and one for the lower confidence and use a colour palette with a faded version of the main colour for the two confidence limit lines.
Thank you for this great library, I would add candlestick charts to it, would this be possible or are there other libaries better to use in Elixir?
I’m not sure there are any financial charting libraries in Elixir. It would be pretty straightforward to add candle charts or other OHLC charts. Most of the layout logic is the same as vertical, stacked barcharts. Note, y-coordinates get flipped between Cartesian coordinates and graphics coordinates (eg SVG). I’m on my phone, but from memory the vertical barcharts code is quite explicit about handling this.
Contex is pure Elixir and doesn’t rely on Javascript. Kino charting with Vegalite renders charts with Javascript behind the scenes. If you want pure Elixir with a simple API, Contex meets that. However, Kino with Vegalite has many more visualisation options.
Hey mindok,
thanks for your great work!
I would also love an option to add markers to time series if you still plan implementing those 
Any good hints from a pro where to get started if one would be interested in generating svgs?
