Feature Request: Add Trade Signal Support for Candlestick Charts
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- Dominant language
- Dart
- Stars
- 7.6k
- Forks
- 2k
- Avg merge
- 9d 1h
- Merged PRs (30d)
- 2
Description
**Is your feature request relasted to a problem? Please describe.**
I'm developing a financial application that displays candlestick charts for stock/crypto
trading data. After showing the K-line chart, I need to display user's buy/sell transaction
records as signal markers on the chart.
Currently, fl_chart doesn't support rendering trade signals directly
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**Describe the solution you'd like**
I would like fl_chart to provide a simple interface where I can pass in trade signals and they
will be directly displayed as buy/sell markers on the candlestick chart.
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**Describe alternatives you've considered**
I have considered implementing this by passing in a custom `candlestickPainter`. However, I
believe that for financial K-line charts, buy/sell signals are a common requirement, so it
would be best if this functionality could be built-in.
---
**Additional context**
Here is my PR link https://github.com/imaNNeo/fl_chart/pull/1996
and achieve results
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reviewing the linked PR #1996 and the existing candlestick-chart implementation. Check how the proposed trade-signal interface represents buy and sell markers, then verify that the resulting chart matches the requested behavior and existing chart conventions.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- dart, flutter
- Domain
- data-visualization
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 25/100