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Ranges in React Linear Gauge component

24 May 2022 / 5 minutes to read

Range is the set of values in the axis. The range can be defined using the start and end properties in the RangeDirective. Any number of ranges can be added to the Linear Gauge using the RangesDirective.

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index.jsx
index.tsx
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import * as React from "react";
import * as ReactDOM from "react-dom";
import { LinearGaugeComponent, AxesDirective, AxisDirective, RangesDirective, RangeDirective } from '@syncfusion/ej2-react-lineargauge';
ReactDOM.render(<LinearGaugeComponent id='gauge'>
        <AxesDirective>
            <AxisDirective>
                <RangesDirective>
                    <RangeDirective start={50} end={80}>
                    </RangeDirective>
                </RangesDirective>
            </AxisDirective>
        </AxesDirective>
    </LinearGaugeComponent>, document.getElementById('gauge'));
Copied to clipboard
import * as React from "react";
import * as ReactDOM from "react-dom";
import { LinearGaugeComponent, AxesDirective, AxisDirective, RangesDirective, RangeDirective } from '@syncfusion/ej2-react-lineargauge';

ReactDOM.render(
    <LinearGaugeComponent id='gauge'>
        <AxesDirective>
            <AxisDirective>
                <RangesDirective>
                    <RangeDirective start={50} end={80}>
                    </RangeDirective>
                </RangesDirective>
            </AxisDirective>
        </AxesDirective>
    </LinearGaugeComponent>,document.getElementById('gauge'));

Customizing the range

Ranges can be customized using the following properties in RangeDirective.

  • startWidth - Customize the range thickness at the start axis value.
  • endWidth - Customize the range thickness at the end axis value.
  • color - Customize the range color.
  • position - To place the range. By default, the range is placed outside of the axis. To change the position, this property can be set as ”Inside”, ”Outside”, ”Cross”, or ”Auto“.
  • offset - To place the range with specified distance from the axis.
  • border - Customize color and width of range border.
Source
Preview
index.jsx
index.tsx
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import * as React from "react";
import * as ReactDOM from "react-dom";
import { LinearGaugeComponent, AxesDirective, AxisDirective, RangesDirective, RangeDirective } from '@syncfusion/ej2-react-lineargauge';
ReactDOM.render(<LinearGaugeComponent id='gauge'>
    <AxesDirective>
        <AxisDirective>
            <RangesDirective>
                <RangeDirective start={50} end={80} statWidth={10} endWidth={20} color='red'>
                </RangeDirective>
            </RangesDirective>
        </AxisDirective>
    </AxesDirective>
</LinearGaugeComponent>, document.getElementById('gauge'));
Copied to clipboard
import * as React from "react";
import * as ReactDOM from "react-dom";
import { LinearGaugeComponent, AxesDirective, AxisDirective, RangesDirective, RangeDirective } from '@syncfusion/ej2-react-lineargauge';

ReactDOM.render(
<LinearGaugeComponent id='gauge'>
    <AxesDirective>
        <AxisDirective>
            <RangesDirective>
                <RangeDirective start={50} end={80} statWidth={10} endWidth={20} color='red'>
                </RangeDirective>
            </RangesDirective>
        </AxisDirective>
    </AxesDirective>
</LinearGaugeComponent>,document.getElementById('gauge'));

Setting the range color for the labels

To set the color of the labels like the range color, set the useRangeColor property as true in the labelStyle.

Source
Preview
index.jsx
index.tsx
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import * as React from "react";
import * as ReactDOM from "react-dom";
import { LinearGaugeComponent, AxesDirective, AxisDirective, RangesDirective, RangeDirective } from '@syncfusion/ej2-react-lineargauge';
ReactDOM.render(<LinearGaugeComponent id='gauge'>
    <AxesDirective>
        <AxisDirective labelStyle={{ useRangeColor: true }}>
            <RangesDirective>
                <RangeDirective start={50} end={80} statWidth={10} endWidth={10} color='red'>
                </RangeDirective>
            </RangesDirective>
        </AxisDirective>
    </AxesDirective>
</LinearGaugeComponent>, document.getElementById('gauge'));
Copied to clipboard
import * as React from "react";
import * as ReactDOM from "react-dom";
import { LinearGaugeComponent, AxesDirective, AxisDirective, RangesDirective, RangeDirective } from '@syncfusion/ej2-react-lineargauge';

ReactDOM.render(
<LinearGaugeComponent id='gauge'>
    <AxesDirective>
        <AxisDirective labelStyle={{ useRangeColor: true}}>
            <RangesDirective>
                <RangeDirective start={50} end={80} statWidth={10} endWidth={10} color='red'>
                </RangeDirective>
            </RangesDirective>
        </AxisDirective>
    </AxesDirective>
</LinearGaugeComponent>,document.getElementById('gauge'));

Multiple ranges

Multiple ranges can be added to the Linear Gauge by adding collections of RangeDirective in the RangesDirective and customization of ranges can be done with RangeDirective.

Source
Preview
index.jsx
index.tsx
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import * as React from "react";
import * as ReactDOM from "react-dom";
import { LinearGaugeComponent, AxesDirective, AxisDirective, RangesDirective, RangeDirective } from '@syncfusion/ej2-react-lineargauge';
ReactDOM.render(<LinearGaugeComponent id='gauge'>
    <AxesDirective>
        <AxisDirective>
            <RangesDirective>
                <RangeDirective start={0} end={30} statWidth={10} endWidth={10} color='#41f47f'>
                </RangeDirective>
                <RangeDirective start={30} end={50} statWidth={10} endWidth={10} color='#f49441'>
                </RangeDirective>
                <RangeDirective start={50} end={100} statWidth={10} endWidth={10} color='#cd41f4'>
                </RangeDirective>
            </RangesDirective>
        </AxisDirective>
    </AxesDirective>
</LinearGaugeComponent>, document.getElementById('gauge'));
Copied to clipboard
import * as React from "react";
import * as ReactDOM from "react-dom";
import { LinearGaugeComponent, AxesDirective, AxisDirective, RangesDirective, RangeDirective } from '@syncfusion/ej2-react-lineargauge';

ReactDOM.render(
<LinearGaugeComponent id='gauge'>
    <AxesDirective>
        <AxisDirective>
            <RangesDirective>
                <RangeDirective start={0} end={30} statWidth={10} endWidth={10} color='#41f47f'>
                </RangeDirective>
                <RangeDirective start={30} end={50} statWidth={10} endWidth={10} color='#f49441'>
                </RangeDirective>
                <RangeDirective start={50} end={100} statWidth={10} endWidth={10} color='#cd41f4'>
                </RangeDirective>
            </RangesDirective>
        </AxisDirective>
    </AxesDirective>
</LinearGaugeComponent>,document.getElementById('gauge'));

Gradient Color

Gradient support allows the addition of multiple colors in the range. The following gradient types are supported in the Linear Gauge.

  • Linear Gradient
  • Radial Gradient

Linear Gradient

Using linear-gradient, colors will be applied in a linear progression. The start value of the linear gradient can be set using the startValue property. The end value of the linear gradient will be set using the endValue property. The color stop values such as color, opacity, and offset to be defined in colorStop.

Source
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index.jsx
index.tsx
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import * as React from "react";
import * as ReactDOM from "react-dom";
import { LinearGaugeComponent, AxesDirective, AxisDirective, PointersDirective, PointerDirective, RangesDirective, Gradient, Inject, RangeDirective } from '@syncfusion/ej2-react-lineargauge';
ReactDOM.render(<LinearGaugeComponent id='gauge' container={{ width: 30, offset: 30 }} orientation="Horizontal">
<Inject services={[Gradient]}/>
    <AxesDirective>
        <AxisDirective minimum={0} maximum={100} line={{ width: 0 }} majorTicks={{ width: 0, interval: 25 }} minorTicks={{ width: 0 }} labelStyle={{ font: { color: '#424242' }, offset: 70 }}>
            <PointersDirective>
                <PointerDirective value={80} height={25} width={35} placement="Near" offset={-44} markerType="Triangle" color='#f54ea2'>
                </PointerDirective>
            </PointersDirective>
            <RangesDirective>
                <RangeDirective start={0} end={80} startWidth={30} endWidth={30} color="#f54ea2" offset={30} linearGradient={{
    startValue: '0%',
    endValue: '100%',
    colorStop: [
        { color: '#fef3f9', offset: '0%', opacity: 1 },
        { color: '#f54ea2', offset: '100%', opacity: 1 }
    ]
}}>
                </RangeDirective>
            </RangesDirective>
        </AxisDirective>
    </AxesDirective>
</LinearGaugeComponent>, document.getElementById('gauge'));
Copied to clipboard
import * as React from "react";
import * as ReactDOM from "react-dom";
import { LinearGaugeComponent, AxesDirective, AxisDirective, PointersDirective, PointerDirective, RangesDirective, Gradient, Inject, RangeDirective } from '@syncfusion/ej2-react-lineargauge';

ReactDOM.render(
<LinearGaugeComponent id='gauge' container={{width: 30, offset: 30}} orientation="Horizontal">
<Inject services={[Gradient]}/>
    <AxesDirective>
        <AxisDirective minimum={0} maximum={100} line={{width: 0}} majorTicks={{width: 0, interval:25}}
            minorTicks={{width:  0}} labelStyle={{font: {color: '#424242'}, offset: 70}}>
            <PointersDirective>
                <PointerDirective value={80} height={25} width={35} placement="Near" offset={-44} markerType="Triangle" color= '#f54ea2'>
                </PointerDirective>
            </PointersDirective>
            <RangesDirective>
                <RangeDirective start={0} end={80} startWidth={30} endWidth={30} color="#f54ea2" offset={30}
                    linearGradient = {{
                        startValue: '0%',
                        endValue: '100%',
                        colorStop: [
                        { color: '#fef3f9', offset: '0%', opacity: 1 },
                        { color: '#f54ea2', offset: '100%', opacity: 1 }]
                    }}>
                </RangeDirective>
            </RangesDirective>
        </AxisDirective>
    </AxesDirective>
</LinearGaugeComponent>,document.getElementById('gauge'));

Radial Gradient

Using radial gradient, colors will be applied in circular progression. The inner circle position of the radial gradient will be set using the innerPosition property. The outer circle position of the radial gradient can be set using the outerPosition property. The color stop values such as color, opacity and offset to be defined incolorStop.

Source
Preview
index.jsx
index.tsx
Copied to clipboard
import * as React from "react";
import * as ReactDOM from "react-dom";
import { LinearGaugeComponent, AxesDirective, AxisDirective, PointersDirective, PointerDirective, RangesDirective, Gradient, Inject, RangeDirective } from '@syncfusion/ej2-react-lineargauge';
ReactDOM.render(<LinearGaugeComponent id='gauge' container={{ width: 30, offset: 30 }} orientation="Horizontal">
<Inject services={[Gradient]}/>
    <AxesDirective>
        <AxisDirective minimum={0} maximum={100} line={{ width: 0 }} majorTicks={{ width: 0, interval: 25 }} minorTicks={{ width: 0 }} labelStyle={{ font: { color: '#424242' }, offset: 70 }}>
            <PointersDirective>
                <PointerDirective value={80} height={25} width={35} placement="Near" offset={-44} markerType="Triangle" color='#f54ea2'>
                </PointerDirective>
            </PointersDirective>
            <RangesDirective>
                <RangeDirective start={0} end={80} startWidth={30} endWidth={30} color="#f54ea2" offset={30} radialGradient={{
    radius: '65%',
    outerPosition: { x: '50%', y: '70%' },
    innerPosition: { x: '60%', y: '60%' },
    colorStop: [
        { color: '#fff5f5', offset: '5%', opacity: 0.9 },
        { color: '#f54ea2', offset: '100%', opacity: 0.9 }
    ]
}}>
                </RangeDirective>
            </RangesDirective>
        </AxisDirective>
    </AxesDirective>
</LinearGaugeComponent>, document.getElementById('gauge'));
Copied to clipboard
import * as React from "react";
import * as ReactDOM from "react-dom";
import { LinearGaugeComponent, AxesDirective, AxisDirective, PointersDirective, PointerDirective, RangesDirective, Gradient, Inject, RangeDirective } from '@syncfusion/ej2-react-lineargauge';

ReactDOM.render(
<LinearGaugeComponent id='gauge' container={{width: 30, offset: 30}} orientation="Horizontal">
<Inject services={[Gradient]}/>
    <AxesDirective>
        <AxisDirective minimum={0} maximum={100} line={{width: 0}} majorTicks={{width: 0, interval: 25}}
            minorTicks={{width:  0}} labelStyle={{font: {color: '#424242'}, offset: 70}}>
            <PointersDirective>
                <PointerDirective value={80} height={25} width={35} placement="Near" offset={-44} markerType="Triangle" color= '#f54ea2'>
                </PointerDirective>
            </PointersDirective>
            <RangesDirective>
                <RangeDirective start={0} end={80} startWidth={30} endWidth={30} color="#f54ea2" offset={30}
                    radialGradient = {{
                        radius: '65%',
                        outerPosition: { x: '50%', y: '70%' },
                        innerPosition: { x: '60%', y: '60%' },
                        colorStop: [
                        { color: '#fff5f5', offset: '5%', opacity: 0.9 },
                        { color: '#f54ea2', offset: '100%', opacity: 0.9 }]
                    }}>
                </RangeDirective>
            </RangesDirective>
        </AxisDirective>
    </AxesDirective>
</LinearGaugeComponent>,document.getElementById('gauge'));

If we set both gradients for the range, only the linear gradient gets rendered. If we set the startValue and endValue of the linearGradient as empty strings, then the radial gradient gets rendered in the range of the Linear Gauge.

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