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react-native-graph

Beautiful, high-performance Graphs/Charts for React Native.

About

react-native-graph is a Line Graph implementation based on the high performance 2D graphics rendering engine "Skia". It's used in the Pink Panda Wallet app to power thousands of token graphs every day.

• 🏎️ Faster and smoother than react-native-svg graphs
• ⚡️ Native path interpolation in Skia
• 🐎 Up to 120 FPS animations
• 📈 Cubic bezier rendering for smoother edges
• 👍 Smooth pan/scrubbing gesture
• 💰 Made for crypto apps and Wallets
• ❌ Does not block navigation, press or scroll animations

Installation

yarn add react-native-reanimated # Reanimated requires react-native-worklets
yarn add react-native-gesture-handler
yarn add @shopify/react-native-skia
yarn add react-native-graph

Usage

import { LineGraph } from 'react-native-graph';

function App() {
  const priceHistory = usePriceHistory('ethereum');

  return (
    <LineGraph
      style={{ height: 200 }}
      points={priceHistory}
      animated={false}
      color="#4484B2"
    />
  );
}

Configuration

LineGraph accepts the following props. It also accepts React Native ViewProps, which are forwarded to the root view.

Prop	Type	Default	Availability	Description
animated	boolean	false	Always	Uses the animated renderer when true and the lightweight static renderer when false.
points	GraphPoint[]	None. Required.	Always	The points to draw. Each point contains a numeric value and a Date. The graph scales to fit them unless range overrides an axis.
color	string	None. Required.	Always	The graph line color.
range	GraphRange	undefined. Both axes are inferred from points.	Always	Overrides all or part of the visible x-axis and y-axis ranges.
gradientFillColors	Color[]	undefined. No area fill is drawn.	animated={true}	Colors for the vertical gradient below the graph line.
lineThickness	number	3	Always	The graph line width in points.
enableFadeInMask	boolean	false	Always	Fades in the start of the graph line.
enablePanGesture	boolean	false	animated={true}	Lets the user press and scrub through graph points.
panGestureDelay	number	300	animated={true}	Time in milliseconds that a press must be held before scrubbing starts. Set it to 0 to start immediately.
onGestureStart	() => void	undefined. No callback runs.	animated={true}	Called when scrubbing starts.
onPointSelected	(point: GraphPoint) => void	undefined. No callback runs.	animated={true}	Called when scrubbing reaches a different point.
onGestureEnd	() => void	undefined. No callback runs.	animated={true}	Called when scrubbing ends.
SelectionDot	ComponentType<SelectionDotProps> | null	Built-in SelectionDot	animated={true}	Renders the current scrub position. Pass null to hide it.
selectionDotShadowColor	string	undefined	animated={true}	Currently unused. This prop has no visual effect.
horizontalPadding	number	10 when the indicator is enabled, otherwise 0	animated={true}	Adds space to both horizontal edges of the drawing area.
verticalPadding	number	The value of lineThickness	animated={true}	Adds space to both vertical edges of the drawing area.
enableIndicator	boolean	false	animated={true}	Shows an indicator at the last graph point.
indicatorPulsating	boolean	false	animated={true}	Pulses the indicator while the graph is idle. Requires enableIndicator.
TopAxisLabel	() => ReactElement | null	undefined. Nothing is rendered.	animated={true}	Renders a label above the graph.
BottomAxisLabel	() => ReactElement | null	undefined. Nothing is rendered.	animated={true}	Renders a label below the graph.

Data types

interface GraphPoint {
  value: number;
  date: Date;
}

interface GraphRange {
  x?: { min: Date; max: Date };
  y?: { min: number; max: number };
}

You can provide either axis in range and let the graph infer the other one from points.

Prop examples

animated

Whether to animate between data changes. Defaults to false when omitted.

Animations run using the Skia animation system, with path interpolation handled on the UI thread.

If animated is false, the graph uses a lightweight static renderer. This is useful when displaying many graphs in a list.

Example:

<LineGraph points={priceHistory} animated={true} color="#4484B2" />

---

enablePanGesture

Whether to enable the pan gesture. Defaults to false.

Requires animated to be true.

There are three events fired when the user interacts with the graph:

1. onGestureStart: Fires once the user presses and holds the graph. The pan gesture activates.
2. onPointSelected: Fires for each point the user pans through. Use it to update a label or highlight the selected value.
3. onGestureEnd: Fires once the user releases the graph. The pan gesture deactivates.

The pan gesture can be configured using these props:

• panGestureDelay controls how long the user must hold before the gesture activates. It defaults to 300 milliseconds. Set it to 0 to start immediately.

Example:

<LineGraph
  points={priceHistory}
  animated={true}
  color="#4484B2"
  enablePanGesture={true}
  onGestureStart={() => hapticFeedback('impactLight')}
  onPointSelected={(p) => updatePriceTitle(p)}
  onGestureEnd={() => resetPriceTitle()}
/>

---

TopAxisLabel / BottomAxisLabel

Renders labels above or below the graph. Both props default to undefined, so no labels are rendered.

Requires animated to be true.

These labels usually show the maximum and minimum values. You can derive those values and their positions from the graph points.

Example:

<LineGraph
  points={priceHistory}
  animated={true}
  color="#4484B2"
  TopAxisLabel={() => <AxisLabel x={max.x} value={max.value} />}
  BottomAxisLabel={() => <AxisLabel x={min.x} value={min.value} />}
/>

range

Defines the visible range of the graph canvas. It defaults to undefined, which infers both axes from points.

Use a custom range to show a fixed time frame or value scale, even when the data does not cover the whole range. Points outside the x-axis range are not drawn.

This example shows January 2000 and sets the y-axis range to 0 through 200:

<LineGraph
  points={priceHistory}
  animated={true}
  color="#4484B2"
  enablePanGesture={true}
  range={{
    x: {
      min: new Date('2000-01-01T00:00:00.000Z'),
      max: new Date('2000-01-31T23:59:59.999Z'),
    },
    y: {
      min: 0,
      max: 200,
    },
  }}
/>

---

SelectionDot

Renders the selection dot. It defaults to the built-in SelectionDot. Pass null to hide it.

Requires animated and enablePanGesture to be true.

A custom selection-dot component receives these props from LineGraph. They are all required and have no defaults when you render SelectionDot directly.

Prop	Type	Default	Description
isActive	SharedValue<boolean>	None. Required.	Whether the pan gesture is active.
color	string	None. Required.	The graph line color.
lineThickness	number | undefined	None. Required.	The resolved graph line width when supplied by LineGraph.
circleX	SharedValue<number>	None. Required.	The selected point's x-coordinate.
circleY	SharedValue<number>	None. Required.	The selected point's y-coordinate.

Example:

<LineGraph
  points={priceHistory}
  animated={true}
  color="#4484B2"
  enablePanGesture={true}
  SelectionDot={CustomSelectionDot}
/>

See this example <SelectionDot /> component.

Sponsor

react-native-graph is sponsored by Pink Panda.

Download the Pink Panda mobile app to see react-native-graph in action!

Community Discord

Join the Margelo Community Discord to chat about react-native-graph or other Margelo libraries.

Adopting at scale

react-native-graph was built at Margelo, an elite app development agency. For enterprise support or other business inquiries, contact us at hello@margelo.com!

Thanks

Special thanks to William Candillon and Christian Falch for their amazing help and support for React Native Skia ❤️