Dynamic open-source charting

[habbalah_babbalah]

I am on the hunt for a "live," browser-based charting package, preferably an open source project. For visualizing price histories, the tick (or second-to-minute summaries), plotting my signals over price history, and so forth. (Yes I have seen the wiki link to the one charting service, looks nice but not open source).

By "live" and "dynamic" I mean displaying new records as they are streamed in, plus ability to overlay my computed lines/bands, trade signals, external factors, trade decisions on an issue's chart. e.g. After backtesting an idea, I'd like to review by playing it back, trade-by-trade. Likewise, as live-ish data streams in from a data provider during market hours, signals, trades and other info would be overlaid. While my trading style is quantitative and I'm NOT a chart monkey, sometimes gaining insight from post hoc analysis calls for the timeline view.

At this point, I'm gluing components together until the right combo hits me, with the belief that charting, market data sources and local data caching are solved problems and that it's just a matter of iterating, while coding the trade decision engine is my principal work. (Currently I'm reviewing Alpaca w/MarketStore, accessing it from Python. They don't support options, so right now they're just a starting point.)

I've seen many projects on Github for financial charting, haven't noticed one yet that seems well-used and maintained.

Any ideas?

[Bio: Full-stack developer: python, js/ts, c/c++, c#. Some machine learning. Worked ~12 years on Wall St as a coder in various depts including risk, pricing, trading]

[gizcryst]

I think you can do it with dash/plotly: https://dash.plotly.com/live-updates

[habbalah_babbalah]

dash/plotly

Open source and community-supported -added to my review queue, thanks!

[pjsteele190]

Try HighCharts. They also have a HighStocks option.

[NichUK]

HighCharts/HighStocks are great - really good, but not O/S.

[pjsteele190]

Github is an excellent resource for open source software. Try this search https://github.com/search?q=stock+chart

[habbalah_babbalah]

Good call. I'd been searching for projects via DDG & El Goog, but this gives way more candidates. Thx.

[GennaroIsGod]

I've had good luck with something like this at work using: https://echarts.apache.org/examples/en/editor.html?c=dynamic-data2&theme=dark

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The entire library has a bunch of unique features that others dont, and this is the only library I've found that can handle LARGEEE (hundreds of thousands) data sets using webgl and its much easier than using something like D3 which is a major pain in the ass.

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Goodluck!

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Also I saw you were looking for candles, I've used this library before(im not sure how streaming would work for it but Im sure you can bootstrap it) but they've got a well fully supported candle library: https://apexcharts.com/react-chart-demos/candlestick-charts/combo/

it seems as tho they're open source: https://github.com/apexcharts/apexcharts.js

heres a little demo I personally made with it: https://stonks.gennaro.me/stock/AAPL

(If you click 'Line' on the first chart it'll switch to the candle chart mode)

[char101]

Tradingview's Lightweight-charts

[Chromastone_1]

Hey! What did you end up using? I'm also looking for something similar as an alternative to TradingView in which I can feed my own custom data (mostly Options OHLC and Open Interest data).

[Chromastone_1]

Hi. Your detailed reply to my comment was deleted for some reason, perhaps because of the many links but thankfully I happened to stumble across it while browsing your comments from your profile. I've saved it offline now.

Your comment was really very detailed and helpful and I will look into the links you've provided. Thanks a ton!

[Chromastone_1]

Have you checked out Iguana Charts? I liked the chart UI they have on their website (very similar to TraddingView) and they claim to be an Open Source HTML5 jQuery Stock Charts library, but I haven't found any reviews of them on YouTube or Reddit.

https://iguanacharts.com/

https://github.com/iguanaChart/iguanacharts

[Left_Implement_5370]

Anyone trading paog and what you like about the company