A react component for showing speedometer like gauge using d3

react-d3-speedometer

React Speedometer component using d3.js.

react-d3-speedometer is a react component for showing speedometer like gauge using d3.

Usage:

NPM:
npm install --save react-d3-speedometer

Yarn:
yarn add react-d3-speedometer

// import the component
import ReactSpeedometer from "react-d3-speedometer";
// and just use it
<ReactSpeedometer />

Configuration Options:

prop	type	default	comments
value	number	0	Make sure your value is between your minValue and maxValue
minValue	number	0
maxValue	number	1000
segments	number	5	Number of segments in the speedometer
forceRender	boolean	false	After initial rendering/mounting, when props change, only the value is changed and animated to maintain smooth visualization. But, if you want to force rerender the whole component like change in segments, colors, dimensions etc, you can use this option to force rerender of the whole component on props change.
width	number	300	diameter of the speedometer and the width of the svg element
height	number	300	height of the svg element. Height of the speedometer is always half the width since it is a semi-circle. For fluid width, please refere to fluidWidth config
fluidWidth	boolean	false	If true takes the width of the parent component. See Live Example for more details
needleColor	string	steelblue	Should be a valid color code - colorname, hexadecimal name or rgb value. Should be a valid input for d3.interpolateHsl
startColor	string	#FF471A	Should be a valid color code - colorname, hexadecimal name or rgb value. Should be a valid input for d3.interpolateHsl
endColor	string	#33CC33	Should be a valid color code - colorname, hexadecimal name or rgb value. Should be a valid input for d3.interpolateHsl
needleTransition	string	easeQuadInOut	d3-easing-identifiers - easeLinear, easeQuadIn, easeQuadOut, easeQuadInOut, easeCubicIn, easeCubicOut, easeCubicInOut, easePolyIn, easePolyOut, easePolyInOut, easeSinIn, easeSinOut, easeSinInOut, easeExpIn, easeExpOut, easeExpInOut, easeCircleIn, easeCircleOut, easeCircleInOut, easeBounceIn, easeBounceOut, easeBounceInOut, easeBackIn, easeBackOut, easeBackInOut, easeElasticIn, easeElasticOut, easeElasticInOut, easeElastic
needleTransitionDuration	number	500	Time in milliseconds.
ringWidth	number	60	Width of the speedometer ring.
textColor	string	#666	Should be a valid color code - colorname, hexadecimal name or rgb value. Used for both showing the current value and the segment values
valueFormat	string		should be a valid format for d3-format. By default, no formatter is used. You can use a valid d3 format identifier (for eg: d to convert float to integers), to format the values. Note: This formatter affects all the values (current value, segment values) displayed in the speedometer
currentValueText	string	${value}	Should be provided a string which should have ${value} placeholder which will be replaced with current value. By default, current value is shown (formatted with valueFormat). For example, if current Value is 333 if you would like to show Current Value: 333, you should provide a string Current Value: ${value}. See Live Example

Examples

You can view Live Examples here

Default with no config - Live Example

<ReactSpeedometer />

With configurations - Live Example

<ReactSpeedometer
    maxValue={500}
    value={473}
    needleColor="red"
    startColor="green"
    segments={10}
    endColor="blue"
/>

Fluid Width Example - Live Example

// Speedometer will take the width of the parent div (500)
// any width passed will be ignored
<div style={{
    width: "500px",
    height: "300px",
    background: "#EFEFEF"
}}>
    <ReactSpeedometer
        fluidWidth={true}
        minValue={100}
        maxValue={500}
        value={473}
        needleColor="steelblue"
    />
</div>

Needle Transition Example - Live Example

<ReactSpeedometer
    value={333}
    needleColor="steelblue"
    needleTransitionDuration={4000}
    needleTransition="easeElastic"
/>

This is the needle transition used in the sample image

Force Render component on props change - Live Example

// By default, when props change, only the value prop is updated and animated. 
// This is to maintain smooth visualization and to ignore breaking appearance changes like segments, colors etc. 
// You can override this behaviour by giving forceRender: true

// render a component initially
<ReactSpeedometer
  width={200}
  height={200}
/>
// Now, if given forceRender: true, and change the appearance all together, the component will rerender completely on props change
<ReactSpeedometer
  forceRender={true}
  segments={15}
  width={500}
  height={500}
/>

---

Todos:

• [x] Test coverage (with enzyme)
• [ ] Convert entire code base to ES6

---

Tests:

react-d3-speedometer comes with a test suite using enzyme.

// navigate to root folder and run
npm test
// or 'yarn test' if you are using yarn

GitHub