JavaScript/jQuery LinearGauge Options

See Also

• Configure a Widget: Angular | Vue | React | jQuery | AngularJS | Knockout

To make your gauge "live", enable animation for it by setting the enabled property of the animation object to true. In this instance, the gauge indicators will appear in motion. In addition, within the animation object, you can set an appropriate easing mode using the easing property and specify how long the animation should run using the duration property.

$(function() {
    $("#linearGaugeContainer").dxLinearGauge({
        // ...
        animation: {
            easing: "linear",
            duration: 500
        }
    });
});

<dx-linear-gauge ... >
    <dxo-animation
        easing="linear"
        [duration]="500">
    </dxo-animation>
</dx-linear-gauge>

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    // ...
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';

import { DxLinearGaugeModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxLinearGaugeModule
    ],
    providers: [ ],
    bootstrap: [AppComponent]
})
export class AppModule { }

<template>
    <DxLinearGauge ... >
        <DxAnimation
            easing="linear"
            :duration="500"
        />
    </DxLinearGauge>
</template>

<script>
import 'devextreme/dist/css/dx.common.css';
import 'devextreme/dist/css/dx.light.css';

import DxLinearGauge, {
    DxAnimation
} from 'devextreme-vue/linear-gauge';

export default {
    components: {
        DxLinearGauge,
        DxAnimation
    },
    // ...
}
</script>

import React from 'react';

import 'devextreme/dist/css/dx.common.css';
import 'devextreme/dist/css/dx.light.css';

import LinearGauge, {
    Animation 
} from 'devextreme-react/linear-gauge';

class App extends React.Component {
    render() {
        return (
            <LinearGauge ... >
                <Animation
                    easing="linear"
                    duration={500}
                />
            </LinearGauge>
        );
    }
}
export default App;

@(Html.DevExtreme().LinearGauge()
    @* ... *@
    .Animation(a => a
        .Easing(VizAnimationEasing.Linear)
        .Duration(500)
    )
)

Set this property to the color of the parent page element. Certain elements of the UI component will use this color so that they coordinate with the page. Currently, different auxiliary separators use the container background color, so there is no need to set a custom color for them.

This property supports the following colors:

• Hexadecimal colors
• RGB colors
• RGBA colors
• Predefined/cross-browser color names
• Predefined SVG colors
• Paint server address

These features allow a user to export your UI component into a document or print it. When exporting is enabled, the "Exporting/Printing" button appears in the UI component. A click on it invokes a drop-down menu that lists exporting and printing commands. The following formats are supported for exporting into: PNG, PDF, JPEG, SVG and GIF.

See Also

• exportTo(fileName, format)
• print()
• DevExpress.viz.exportWidgets(widgetInstances, options)

When the UI component is bound to a remote data source, it can display a loading indicator while data is loading.

To change the loading indicator's visibility, use the show property or the showLoadingIndicator() and hideLoadingIndicator() methods.

See Also

• onExporting
• onFileSaving

See Also

• onExported
• onFileSaving

See Also

• onExporting
• onExported

The UI component notifies you of errors and warnings by passing messages to the browser console. Each message contains the incident's ID, a brief description, and a link to the Errors and Warnings section where further information about this incident can be found.

The onIncidentOccurred function allows you to handle errors and warnings the way you require. The object passed to it contains the target field. This field provides information about the occurred incident and contains the following properties:

• id
  The incident's ID. The full list of IDs can be found in the Errors and Warnings section.
• type
  The incident's type: "error" or "warning".
• args
  The argument of the incident's message. Depends on the incident. For example, it may be the name of the data source field that was specified incorrectly, or the name of the property that was not set properly.
• text
  The text passed to the browser's console. Includes the args content, if there is any.
• widget
  The name of the UI component that produced the error or warning.
• version
  The used DevExtreme version.

See Also

• Get a UI component Instance in Angular | AngularJS | Knockout | Vue | React

The following example shows how to subscribe to component property changes:

$(function() {
    $("#linearGaugeContainer").dxLinearGauge({
        // ...
        onOptionChanged: function(e) {
            if(e.name === "changedProperty") {
                // handle the property change here
            }
        }
    });
});

<dx-linear-gauge ...
    (onOptionChanged)="handlePropertyChange($event)"> 
</dx-linear-gauge>

import { Component } from '@angular/core'; 

@Component({ 
    selector: 'app-root', 
    templateUrl: './app.component.html', 
    styleUrls: ['./app.component.css'] 
}) 

export class AppComponent { 
    // ...
    handlePropertyChange(e) {
        if(e.name === "changedProperty") { 
            // handle the property change here
        }
    }
}

import { BrowserModule } from '@angular/platform-browser'; 
import { NgModule } from '@angular/core'; 
import { AppComponent } from './app.component'; 
import { DxLinearGaugeModule } from 'devextreme-angular'; 

@NgModule({ 
    declarations: [ 
        AppComponent 
    ], 
    imports: [ 
        BrowserModule, 
        DxLinearGaugeModule 
    ], 
    providers: [ ], 
    bootstrap: [AppComponent] 
}) 

export class AppModule { }  

<template> 
    <DxLinearGauge ...
        @option-changed="handlePropertyChange"
    />            
</template> 

<script> 
import 'devextreme/dist/css/dx.common.css'; 
import 'devextreme/dist/css/dx.light.css'; 
import DxLinearGauge from 'devextreme-vue/linear-gauge'; 

export default { 
    components: { 
        DxLinearGauge
    }, 
    // ...
    methods: { 
        handlePropertyChange: function(e) {
            if(e.name === "changedProperty") {
                // handle the property change here
            }
        }
    } 
} 
</script> 

import React from 'react'; 
import 'devextreme/dist/css/dx.common.css'; 
import 'devextreme/dist/css/dx.light.css'; 

import LinearGauge from 'devextreme-react/linear-gauge'; 

const handlePropertyChange = (e) => {
    if(e.name === "changedProperty") {
        // handle the property change here
    }
}

export default function App() { 
    return ( 
        <LinearGauge ...
            onOptionChanged={handlePropertyChange}
        />        
    ); 
} 

If you place the UI component on a page that uses a tag modifying the path (<base>, <iframe>, etc.), some of the UI component elements may get mixed up or disappear. To solve this problem, set the pathModified property to true.

See Also

• DevExpress.viz.refreshPaths()

For the purpose of more intelligible data visualization, you can combine values into ranges and color each range differently. For instance, you can indicate the range of warm and cold temperatures. To set the ranges, assign an array of objects defining the ranges to the ranges property of the rangeContainer configuration object. In addition, you can specify the orientation of the ranges relative to an invisible scale line, and an offset from this line using the rangeContainer properties.

When this property is set to true, the UI component will be redrawn automatically in case the size of its parent window changes.

When this property is set to true, the UI component text flows from right to left, and the layout of elements is reversed. To switch the entire application/site to the right-to-left representation, assign true to the rtlEnabled field of the object passed to the DevExpress.config(config) method.

DevExpress.config({
    rtlEnabled: true
});

To divide a scale, set its startValue and endValue properties. The scale's major and minor ticks will be calculated automatically. Major ticks will be shown by default. To show minor ticks, set their visible property to true. You can set custom major and minor tick intervals, show custom major and minor ticks, and format tick labels. These and other scale properties are available in the scale configuration object.

The UI component occupies its container's entire area by default. Use the size object to specify the UI component's size if it should be different from that of its container. Assign 0 to size object's height and width properties to hide the UI component.

$(function() {
    $("#linearGaugeContainer").dxLinearGauge({
        // ...
        size: {
            height: 300,
            width: 600
        }
    });
});

<dx-linear-gauge ... >
    <dxo-size
        [height]="300"
        [width]="600">
    </dxo-size>
</dx-linear-gauge>

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    // ...
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';

import { DxLinearGaugeModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxLinearGaugeModule
    ],
    providers: [ ],
    bootstrap: [AppComponent]
})
export class AppModule { }

<template>
    <DxLinearGauge ... >
        <DxSize
            :height="300"
            :width="600"
        />
    </DxLinearGauge>
</template>

<script>

import DxLinearGauge, {
    DxSize
} from 'devextreme-vue/linear-gauge';

export default {
    components: {
        DxLinearGauge,
        DxSize
    },
    // ...
}
</script>

import React from 'react';

import LinearGauge, {
    Size
} from 'devextreme-react/linear-gauge';

class App extends React.Component {
    render() {
        return (
            <LinearGauge ... >
                <Size
                    height={300}
                    width={600}
                />
            </LinearGauge>
        );
    }
}
export default App;

Alternatively, you can style the UI component's container using CSS:

$(function() {
    $("#linearGauge").dxLinearGauge({
        // ...
    });
});

#linearGauge {
    width: 85%;
    height: 70%;
}

<dx-linear-gauge ...
    id="linearGauge">
</dx-linear-gauge>

#linearGauge {
    width: 85%;
    height: 70%;
}

<template>
    <DxLinearGauge ...
        id="linearGauge">
    </DxLinearGauge>
</template>

<script>
import DxLinearGauge from 'devextreme-vue/linear-gauge';

export default {
    components: {
        DxLinearGauge
    },
    // ...
}
</script>

<style>
#linearGauge {
    width: 85%;
    height: 70%;
}
</style>

import React from 'react';

import LinearGauge from 'devextreme-react/linear-gauge';

class App extends React.Component {
    render() {
        return (
            <LinearGauge ...
                id="linearGauge">
            </LinearGauge>
        );
    }
}
export default App;

#linearGauge {
    width: 85%;
    height: 70%;
}

The LinearGauge UI component can display one main value and several subvalues. The gauge's main value and subvalues are indicated by special pointers. You can customize the appearance of these pointers using the valueIndicator and subvalueIndicator configuration objects correspondingly.

The subvalue indicator is a pointer, which designates an extra value on a scale. There are several types of subvalue indicators. Set the required one by using the type property, and then specify the properties that are specific to this type, if needed. To learn the properties that can be specified for a particular type, refer to one of the following sections.

• Circle
• RangeBar
• Rectangle
• Rhombus
• TextCloud
• TriangleMarker

View Demo

In addition to one main value, you can indicate several extra values on a gauge. These are called subvalues. To specify the subvalues, assign an array with them to the subvalues field.

You can obtain and change the subvalues at runtime. In order to do this, use the subvalues() and subvalues(subvalues) methods. Note that in that case, you need to initialize the subvalues property at least with an empty array.

var gaugeOptions = {
    // ...
    subvalues: []    
}

Subvalues are designated by subvalue indicators. You can customize the appearance of these indicators using the subvalueIndicator configuration object.

View Demo

A theme is a UI component configuration that gives the UI component a distinctive appearance. You can use one of the predefined themes or create a custom one. Changing the property values in the UI component's configuration object overrides the theme's corresponding values.

The UI component's title is a short text that usually indicates what is visualized. If you need to specify the title's text only, assign it directly to the title property. Otherwise, set this property to an object with the text and other fields specified.

The title can be accompanied by a subtitle elaborating on the visualized subject using the title.subtitle object.

A tooltip is a miniature rectangle displaying the value of a gauge's indicator. A tooltip appears when the end-user hovers the cursor over an indicator. You can enable/disable tooltips, change their appearance and format their text using fields of the tooltip configuration object.

The main value is designated by the value indicator. To customize the appearance of the value indicator, use the valueIndicator configuration object.

You can obtain and change the gauge value at runtime. In order to do this, use the value() and value(value) methods.

Only one main value can be indicated on a gauge. Besides the main gauge value, you can indicate several extra values. Refer to the subvalues property description for more information.

See Also

• Update Data Demo: CircularGauge | LinearGauge

The value indicator is a pointer that designates the main value of the gauge. There are several types of value indicators. Set the required one by using the type property, and then specify the properties that are specific to this type, if needed. To learn about the properties that can be specified for a particular type, refer to one of the following sections.

• Circle
• RangeBar
• Rectangle
• Rhombus
• TextCloud
• TriangleMarker

View Demo