Multi Chart

Type: multi_chart • Category: visualization

Description

Compose multiple layers (candle/line/renko) on a shared time axis

Parameters

Name	Type	Description	Required	Default
`widgetId`	hidden		no
`limit`	number		no	`500`
`layersExpr`	string	Expr -> list of layer configs	no
`layers`	array	List of layer configs (each: type, rowsExpr/rows, mapping, style)	no
`append`	boolean	Append this single layer to existing widget layers (instead of replacing).	no	`false`
`layerType`	string	Type of layer to add	no
`layerName`	string		no
`layerLimit`	number		no	`500`
`layerRowsExpr`	string	Expr -> list[dict] for the single layer	no
`open`	string		no
`high`	string		no
`low`	string		no
`close`	string		no
`volume`	string		no
`timestamp`	string		no
`value`	string	Line/Renko value field	no
`boxSize`	number	Renko box size (optional, auto if empty)	no
`color`	string	Line color	no
`width`	number	Line width	no	`1.5`
`opacity`	number	Layer opacity	no	`1`
`upColor`	string	Candle/Renko up color	no
`downColor`	string	Candle/Renko down color	no
`stroke`	string	Wick/Brick stroke color	no

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Multi Chart Worker - Multi-Layer Financial Visualization

Compose complex financial charts with multiple data layers on a shared time axis. Supports 19 different chart types for comprehensive technical analysis and data visualization.

Supported Layer Types:

Core Financial Charts:

Candle: OHLC candlestick charts with volume support
Line: Simple time series lines for trends and indicators
Renko: Brick-based charts showing price movements (time-deemphasized)
Bar: OHLC bars with open/close ticks and high/low wicks
Heikin Ashi: Smoothed candles averaging OHLC values

Advanced Technical Indicators:

Bollinger: Moving average with upper/lower standard deviation bands
Ichimoku: Complete Ichimoku cloud system (Tenkan, Kijun, Spans, Chikou)
Kagi: Trend-following lines with thickness changes on reversals
Point & Figure: X/O boxes with reversal rules (ignores time)

Specialized Charts:

Tick: Per-tick price series for micro-movements
Range Bar: Bars printed when price moves fixed range (variable time)
Equivolume: Candles with width encoding trading volume
Footprint: Order flow with bid/ask volumes per price level
Volume: Volume bars/areas (typically as bottom band)

Data Visualization:

Area: Line charts with filled areas under curves
Mountain: Gradient-filled area charts for stronger emphasis
Bubble: Scatter plots with size encoding values
Heatmap: Time * category intensity visualization
Horizontal Levels: Support/resistance lines at specified levels

Configuration Methods:

Bulk layers: layersExpr returns list of complete layer configurations
Single layer append: Add individual layers with layerType, layerRowsExpr, etc.
append: When true, adds to existing widget layers instead of replacing

Required Fields by Layer Type:

OHLC-based (Candle, Bar, Heikin Ashi, Equivolume, Footprint):

timestamp, open, high, low, close (volume optional)

Line-based (Line, Area, Mountain, Tick, Range Bar, Kagi, Point & Figure):

timestamp, value

Specialized:

Bollinger: timestamp, value (period, stdMult parameters)
Ichimoku: timestamp, open, high, low, close (tenkan, kijun, spanB periods)
Bubble: timestamp, value, size (colorValue optional)
Heatmap: timestamp, y (category), value
Footprint: timestamp, open, high, low, close, volume (optional buy/sell volumes, levels)
Volume: timestamp, volume

Styling Options:

Colors: color, upColor, downColor, stroke for visual customization
Width: Line thickness and opacity control
Layer opacity: Transparency settings for overlay effects
Theme: Classic Dark, Light, Blue Night, Monochrome
Compress gaps: Auto, Always, Never for handling missing data

Features:

Shared time axis: All layers aligned by timestamp for perfect synchronization
Interactive: Zoom, pan, crosshair, tooltips across all layers
Flexible data sources: Mix different data expressions per layer
Performance optimized: Efficient rendering of complex multi-layer charts
Auto-detection: Field mapping from data structure
Append mode: Add layers incrementally without replacing existing ones

Data Format Examples:

Candle Layer:

{
  "timestamp": 1640995200000,
  "open": 100.50,
  "high": 105.25,
  "low": 99.75,
  "close": 104.80,
  "volume": 1000000
}

Line Layer:

{
  "timestamp": 1640995200000,
  "value": 102.30
}

Bollinger Bands Layer:

{
  "timestamp": 1640995200000,
  "value": 102.30
}
// With parameters: period=20, stdMult=2

Ichimoku Layer:

{
  "timestamp": 1640995200000,
  "open": 100.50,
  "high": 105.25,
  "low": 99.75,
  "close": 104.80
}
// With parameters: tenkan=9, kijun=26, spanB=52

Bubble Layer:

{
  "timestamp": 1640995200000,
  "value": 102.30,
  "size": 1000000,
  "colorValue": 0.15
}

Heatmap Layer:

{
  "timestamp": 1640995200000,
  "y": "AAPL",
  "value": 0.85
}

Bulk Configuration:

layersExpr = [
  {
    "type": "candle",
    "rowsExpr": "data.price_data",
    "mapping": {"timestamp": "ts", "open": "o", "high": "h", "low": "l", "close": "c"},
    "style": {"upColor": "green", "downColor": "red"}
  },
  {
    "type": "line",
    "rowsExpr": "data.moving_average",
    "mapping": {"timestamp": "ts", "value": "ma"},
    "style": {"color": "blue", "width": 2}
  },
  {
    "type": "bollinger",
    "rowsExpr": "data.prices",
    "mapping": {"timestamp": "ts", "value": "close"},
    "period": 20,
    "stdMult": 2,
    "style": {"upperColor": "red", "lowerColor": "green"}
  }
]

Examples:

Price + Indicators: Overlay moving averages and Bollinger bands on candlestick charts
Multi-asset: Compare different stocks or cryptocurrencies on same time axis
Technical Analysis: Combine Ichimoku cloud with support/resistance levels
Volume Analysis: Add footprint charts with volume profile
Complex Strategies: Mix Renko bricks with tick data for detailed analysis
Portfolio Heatmap: Time-series heatmap of multiple asset performances

Use Cases:

Advanced technical analysis with multiple indicators
Multi-asset portfolio visualization and comparison
Complex trading strategies requiring multiple data overlays
Comparative market analysis across different timeframes
Professional chart pattern recognition and analysis
Risk management with multiple confirmation signals
Algorithmic trading strategy visualization

Performance Notes:

Supports up to 19 different layer types in single chart
Efficient rendering with configurable data limits per layer
Automatic data synchronization across all layers
Optimized for real-time data updates and large datasets

Description​

Parameters​

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Description

Parameters

Help