Feature Request: Add additional lines for custom indicators

[NLKNguyen]

Hi,

Thanks for the amazing work. Is there any plan to support additional lines to the chart for custom indicators?
That would open doors to various kinds of technical analysis visualization.

For example, horizon/vertical lines, or arbitrary time-series data such as Moving Average. I imagine the data can be embedded in the JSON data stream along with the current OHLC fields.

[Julien-R44]

Hey, thanks you !

I am afraid that this is not possible. Since the graphic is drawn using unicode characters, it is not possible to draw other characters on top of the candles.
The only solution I see would be to display the technical indicators below the chart a bit like for the volumes but I think that would lose a lot of its interest for some indicators, especially for moving average.

Maybe we could try to draw this behind the candles but I'm really not sure of the result. I'll do a test in the next days/weeks
If you have a better suggestion let me know !

[NLKNguyen]

Did you have a chance to try drawing behind the candles? I think that is a good compromise to have the candles always on top.
I see that Unicode braille characters are commonly used to represent line plots. Some references I found:

• https://github.com/dcat/tplot
  • https://lyngvaer.no/log/graph-plotting-terminal-braille
• https://github.com/asciimoo/drawille
  • https://github.com/madbence/node-drawille
• https://github.com/red-data-tools/unicode_plot.rb
• https://github.com/atsaki/termeter
• https://github.com/red-data-tools/YouPlot
• https://github.com/tammoippen/plotille
  • https://pythonawesome.com/plot-in-the-terminal-using-braille-dots-with-python/
• Graphs in Braille patterns do not always work as expected cjbassi/ytop#79 (comment)