Box
Map
Vue

Configuration

An object that defines configuration properties for the PieChart UI component.

See Also

adaptiveLayout

Specifies adaptive layout properties.

Type:

Object

The adaptive layout enables the UI component to hide optional elements if they do not fit in the container. Elements are hidden in the following sequence:

  1. Title
  2. Export menu icon
  3. Legend
  4. Point labels (can be saved by setting the adaptiveLayout.keepLabels property to true)

Use the height and width properties in the adaptiveLayout object to specify the minimum container size at which the layout begins to adapt.

View Demo on JSFiddle

See Also

animation

Specifies animation properties.

Type:

Object

|

Boolean

The UI component animates its elements at the beginning of its lifetime and when the data source changes.

jQuery
index.js
$(function() {
    $("#pieChartContainer").dxPieChart({
        // ...
        animation: {
            easing: "linear",
            duration: 500,
            maxPointCountSupported: 100
        }
    });
});
Angular
app.component.html
app.component.ts
app.module.ts
<dx-pie-chart ... >
    <dxo-animation
        easing="linear"
        [duration]="500"
        [maxPointCountSupported]="100">
    </dxo-animation>
</dx-pie-chart>
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 { DxPieChartModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxPieChartModule
    ],
    providers: [ ],
    bootstrap: [AppComponent]
})
export class AppModule { }
Vue
App.vue
<template>
    <DxPieChart ... >
        <DxAnimation
            easing="linear"
            :duration="500"
            :max-point-count-supported="100"
        />
    </DxPieChart>
</template>

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

import DxPieChart, {
    DxAnimation
} from 'devextreme-vue/pie-chart';

export default {
    components: {
        DxPieChart,
        DxAnimation
    },
    // ...
}
</script>
React
App.js
import React from 'react';

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

import PieChart, {
    Animation 
} from 'devextreme-react/pie-chart';

class App extends React.Component {
    render() {
        return (
            <PieChart ... >
                <Animation
                    easing="linear"
                    duration={500}
                    maxPointCountSupported={100}
                />
            </PieChart>
        );
    }
}
export default App;

annotations[]

Specifies the annotation collection.

Type:

Array<PieChart Annotation | any>

Annotations are containers for images, text blocks, and custom content that display additional information about the visualized data.

DevExtreme PieChart: Annotations

To create annotations, assign an array of objects to the annotations[] property. Each object configures an individual annotation. You can set each annotation's type property to "text", "image", or "custom". Depending on the type, specify the annotation's text, image, or template property:

jQuery
index.js
$(function() {
    $("#pieChart").dxPieChart({
        annotations: [{
            type: "text",
            text: "Annotation text"
        }, {
            type: "image",
            image: "http://image/url/myimage.png"
        }, {
            type: "custom",
            template: function(annotation) {
                const data = annotation.data;
                const $svg = $("<svg>");
                // ...
                // Customize the annotation's markup here
                // ...
                return $svg;
            }
        }]
    });
});
Angular
app.component.html
app.component.ts
app.module.ts
<dx-pie-chart ... >
    <dxi-annotation
        type="text"
        text="Annotation text">
    </dxi-annotation>
    <dxi-annotation
        type="image"
        image="http://image/url/myimage.png">
    </dxi-annotation>
    <dxi-annotation
        type="custom"
        template="custom-annotation">
    </dxi-annotation>
    <svg *dxTemplate="let annotation of 'custom-annotation'">
        <!-- Declare custom SVG markup here -->
    </svg>
</dx-pie-chart>
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 { DxPieChartModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxPieChartModule
    ],
    providers: [ ],
    bootstrap: [AppComponent]
})
export class AppModule { }
Vue
App.vue
<template>
    <DxPieChart ... >
        <DxAnnotation
            type="text"
            text="Annotation text"
        />
        <DxAnnotation
            type="image"
            image="http://image/url/myimage.png"
        />
        <DxAnnotation
            type="custom"
            template="custom-annotation"
        />
        <template #custom-annotation="{ data }">
            <svg>
                <!-- Declare custom SVG markup here -->
            </svg>
        </template>
    </DxPieChart>
</template>

<script>
import DxPieChart, {
    DxAnnotation
} from 'devextreme-vue/pie-chart';

export default {
    components: {
        DxPieChart,
        DxAnnotation
    },
    data() {
        // ...
    }
}
</script>
React
App.js
import React from 'react';

import PieChart, {
    Annotation
} from 'devextreme-react/pie-chart';

function CustomAnnotation(annotation) {
    const data = annotation.data;
    return (
        <svg>
            {/* Declare custom SVG markup here */}
        </svg>
    );
}

export default function App() {
    return (
        <PieChart ... >
            <Annotation
                type="text"
                text="Annotation text"
            />
            <Annotation
                type="image"
                image="http://image/url/myimage.png"
            />
            <Annotation
                type="custom"
                render={CustomAnnotation}
            />
        </PieChart>
    );
}

Annotations can be unattached or anchored to a chart element. The following list shows how to position them. Chart coordinates (argument and series) specify the element that the annotation's arrow points to; pixel coordinates (x and y) specify the position of the annotation's center.

  • Unanchored annotation

    annotations: [{
        x: 100,
        y: 200
    }]
  • Annotation anchored to a series point

    annotations: [{
        argument: "California",
        series: "States" // required if the PieChart contains more than one series
    }]
  • Annotation positioned at an argument's edge

    annotations: [{
        argument: "Alaska",
        series: "States",
        location: "edge"
    }]

The PieChart displays a tooltip when a user long-presses an annotation or hovers the mouse pointer over it.

Objects in the annotations[] array configure individual annotations. To specify properties that apply to all annotations, use the commonAnnotationSettings object. Individual settings take precedence over common settings.

View Demo

See Also

centerComponent

An alias for the centerTemplate property specified in React. Accepts a custom component. Refer to Using a Custom Component for more information.

centerRender

An alias for the centerTemplate property specified in React. Accepts a rendering function. Refer to Using a Rendering Function for more information.

centerTemplate

Specifies a custom template for content in the pie's center.

Type:

template

Template Data:

PieChart

The UI component's instance.

Default Name: undefined

commonAnnotationSettings

Specifies settings common for all annotations in the PieChart.

Type:

Object

Settings specified here can be ignored in favor of individual annotation settings specified in the annotations[] array. Refer to the array's description for information on how to configure annotations.

The following code shows the commonAnnotationSettings declaration syntax:

jQuery
index.js
$(function() {
    $("#pieChart").dxPieChart({
        // ...
        commonAnnotationSettings: {
            tooltipEnabled: false
        }
    });
});
Angular
app.component.html
app.component.ts
app.module.ts
<dx-pie-chart ... >
    <dx-common-annotation-settings
        [tooltipEnabled]="false">
    </dx-common-annotation-settings>
</dx-pie-chart>
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 { DxPieChartModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxPieChartModule
    ],
    providers: [ ],
    bootstrap: [AppComponent]
})
export class AppModule { }
Vue
App.vue
<template>
    <DxPieChart ... >
        <DxCommonAnnotationSettings
            :tooltip-enabled="false"
        />
    </DxPieChart>
</template>

<script>
import DxPieChart, {
    DxCommonAnnotationSettings
} from 'devextreme-vue/pie-chart';

export default {
    components: {
        DxPieChart,
        DxCommonAnnotationSettings
    },
    data() {
        // ...
    }
}
</script>
React
App.js
import React from 'react';

import PieChart, {
    CommonAnnotationSettings
} from 'devextreme-react/pie-chart';

class App extends React.Component {
    render() {
        return (
            <PieChart ... >
                <CommonAnnotationSettings
                    tooltipEnabled={false}
                />
            </PieChart>
        );
    }
}
export default App;

View Demo

See Also

commonSeriesSettings

An object defining the configuration properties that are common for all series of the PieChart UI component.

Type: any

Use this object's properties to set properties for all chart series at once.

customizeAnnotation

Customizes an individual annotation.

Type:

Function

Function parameters:
annotation:

PieChart Annotation

| any

The annotation before customizations.

Return Value:

PieChart Annotation

The annotation after customizations.

Default Value: undefined
Cannot be used in themes.

The following code shows how to use the customizeAnnotation function to apply different settings to text and image annotations:

jQuery
JavaScript
$(function() {
    $("#pieChartContainer").dxPieChart({
        // ...
        customizeAnnotation: function(annotationItem) {
            if(annotationItem.text) {
                annotationItem.color = "red";
            }
            if(annotationItem.image) {
                annotationItem.color = "blue";
            }
            return annotationItem;
        }
    });
});
Angular
app.component.html
app.component.ts
app.module.ts
<dx-pie-chart ...
    [customizeAnnotation]="customizeAnnotation">
</dx-pie-chart>
// ...
export class AppComponent {
    customizeAnnotation(annotationItem) {
        if(annotationItem.text) {
            annotationItem.color = "red";
        }
        if(annotationItem.image) {
            annotationItem.color = "blue";
        }
        return annotationItem;
    }
}
import { DxPieChartModule } from 'devextreme-angular';
// ...
@NgModule({
    imports: [
        // ...
        DxPieChartModule
    ],
    // ...
})
export class AppModule { }
Vue
App.vue
<template> 
    <DxPieChart ...
        :customize-annotation="customizeAnnotation">
    </DxPieChart>
</template>

<script>
import DxPieChart from 'devextreme-vue/pie-chart';

export default {
    components: {
        DxPieChart
    },
    methods: {
        customizeAnnotation(annotationItem) {
            if(annotationItem.text) {
                annotationItem.color = "red";
            }
            if(annotationItem.image) {
                annotationItem.color = "blue";
            }
            return annotationItem;
        }
    }
}
</script>
React
App.js
import React from 'react';
import PieChart from 'devextreme-react/pie-chart';

export default function App() {
    const customizeAnnotation = (annotationItem) => {
        if(annotationItem.text) {
            annotationItem.color = "red";
        }
        if(annotationItem.image) {
            annotationItem.color = "blue";
        }
        return annotationItem;
    }

    return (
        <PieChart ...
            customizeAnnotation={customizeAnnotation}>
        </PieChart>
    );
}
ASP.NET MVC Controls
Razor C#
@(Html.DevExtreme().PieChart()
    @* ... *@
    .CustomizeAnnotation("customizeAnnotation")
)

<script type="text/javascript">
    function customizeAnnotation(annotationItem) {
        if(annotationItem.text) {
            annotationItem.color = "red";
        }
        if(annotationItem.image) {
            annotationItem.color = "blue";
        }
        return annotationItem;
    }
</script>
See Also

customizeLabel

Customizes the appearance of an individual point label.

Type:

Function

Function parameters:
pointInfo:

Object

Information on the series point.

Return Value:

Point Label

The label's configuration.

All point labels in a chart are identical by default, but you can specify a unique appearance for individual labels using the customizeLabel function. This function should return an object with properties that will be changed for a certain label. See the label object for information about all properties available for changing.

The customizeLabel function accepts an object providing information about the series point that the label belongs to. This object contains the following fields.

Field Description
argument The argument of the series point.
value The value of the series point.
tag The tag of the series point.
series The series that includes the series point.
index The index of the series point in the points array.
data An object that contains the series point data.

customizePoint

Customizes the appearance of an individual series point.

Type:

Function

Function parameters:
pointInfo:

Object

Information on the series point.

Return Value:

Point Configuration

The point's configuration.

By default, all the points of a pie are displayed identically. But you can specify different appearance for certain points using the customizePoint field. Assign a function to this field. This function should return an object with properties that should be changed for a certain point. The following pie properties can be changed.

When implementing a callback function for this property, use the argument or value of a point. They can be accessed using the following fields of the function's parameter.

Field Description
argument The argument of the series point.
value The value of the series point.
tag The tag of the series point.
index The index of the series point in the points array.
data An object that contains the series point data.

In addition, these values can be accessed using the this object.

dataSource

Binds the UI component to data.

Cannot be used in themes.

The PieChart works with collections of objects.

Depending on your data source, bind the PieChart to data as follows.

  • Data Array
    Assign the array to the dataSource option. View Demo

  • Read-Only Data in JSON Format
    Set the dataSource property to the URL of a JSON file or service that returns JSON data. View Demo

  • OData
    Implement an ODataStore.

  • Web API, PHP, MongoDB
    Use one of the following extensions to enable the server to process data according to the protocol DevExtreme UI components use:

    Then, use the createStore method to configure access to the server on the client as shown below. This method is part of DevExtreme.AspNet.Data.

    jQuery
    JavaScript
    $(function() {
        let serviceUrl = "https://url/to/my/service";
        $("#pieChartContainer").dxPieChart({
            // ...
            dataSource: DevExpress.data.AspNet.createStore({
                key: "ID",
                loadUrl: serviceUrl + "/GetAction",
                insertUrl: serviceUrl + "/InsertAction",
                updateUrl: serviceUrl + "/UpdateAction",
                deleteUrl: serviceUrl + "/DeleteAction"
            })
        })
    });
    Angular
    app.component.ts
    app.component.html
    app.module.ts
    import { Component } from '@angular/core';
    import CustomStore from 'devextreme/data/custom_store';
    import { createStore } from 'devextreme-aspnet-data-nojquery';
    
    @Component({
        selector: 'app-root',
        templateUrl: './app.component.html',
        styleUrls: ['./app.component.css']
    })
    export class AppComponent {
        store: CustomStore;
        constructor() {
            let serviceUrl = "https://url/to/my/service";
            this.store = createStore({
                key: "ID",
                loadUrl: serviceUrl + "/GetAction",
                insertUrl: serviceUrl + "/InsertAction",
                updateUrl: serviceUrl + "/UpdateAction",
                deleteUrl: serviceUrl + "/DeleteAction"
            })
        }
    }
    <dx-pie-chart ...
        [dataSource]="store">
    </dx-pie-chart>
    import { BrowserModule } from '@angular/platform-browser';
    import { NgModule } from '@angular/core';
    import { AppComponent } from './app.component';
    
    import { DxPieChartModule } from 'devextreme-angular';
    
    @NgModule({
        declarations: [
            AppComponent
        ],
        imports: [
            BrowserModule,
            DxPieChartModule
        ],
        providers: [],
        bootstrap: [AppComponent]
    })
    export class AppModule { }
    Vue
    App.vue
    <template> 
        <DxPieChart ...
            :data-source="store" />
    </template>
    
    <script>
    import 'devextreme/dist/css/dx.light.css';
    
    import CustomStore from 'devextreme/data/custom_store';
    import { createStore } from 'devextreme-aspnet-data-nojquery';
    import { DxPieChart } from 'devextreme-vue/pie-chart';
    
    export default {
        components: {
            DxPieChart
        },
        data() {
            const serviceUrl = "https://url/to/my/service";
            const store = createStore({
                key: "ID",
                loadUrl: serviceUrl + "/GetAction",
                insertUrl: serviceUrl + "/InsertAction",
                updateUrl: serviceUrl + "/UpdateAction",
                deleteUrl: serviceUrl + "/DeleteAction"
            });
            return {
                store
            }
        }
    }
    </script>
    React
    App.js
    import React from 'react';
    import 'devextreme/dist/css/dx.light.css';
    
    import CustomStore from 'devextreme/data/custom_store';
    import { createStore } from 'devextreme-aspnet-data-nojquery';
    import PieChart from 'devextreme-react/pie-chart';
    
    const serviceUrl = "https://url/to/my/service";
    const store = createStore({
        key: "ID",
        loadUrl: serviceUrl + "/GetAction",
        insertUrl: serviceUrl + "/InsertAction",
        updateUrl: serviceUrl + "/UpdateAction",
        deleteUrl: serviceUrl + "/DeleteAction"
    });
    
    class App extends React.Component {
        render() {
            return (
                <PieChart ...
                    dataSource={store} />
            );
        }
    }
    export default App;
  • Any other data source
    Implement a CustomStore.

Regardless of the data source on the input, the PieChart always wraps it in the DataSource object. This object allows you to sort, filter, group, and perform other data shaping operations. To get its instance, call the getDataSource() method.

After providing data, bind series to it.

NOTE

Review the following notes about data binding:

  • If you wrap the store into the DataSource object explicitly, set the paginate property to false to prevent data from partitioning.

  • Data field names cannot be equal to this and should not contain the following characters: ., :, [, and ].

  • The stores and DataSource have methods to process and update data. However, the methods do not allow you to perform particular tasks (for example, replace the entire dataset, reconfigure data access at runtime). For such tasks, create a new array, store, or DataSource and assign it to the dataSource property as shown in the articles about changing properties in jQuery, Angular, React, and Vue.

diameter

Specifies the diameter of the pie.

Type:

Number

Default Value: undefined

This property accepts a number that identifies the ratio between the pie's diameter and the UI component's width or height (depending on which of them is less). For example, assume that the UI component's size is 300x500 pixels and the diameter property is set to 0.5. Then, the resulting diameter of the pie will be:

0.5 * min(300,500) = 0.5 * 300 = 150 pixels

See Also

disabled

Specifies whether the UI component responds to user interaction.

Type:

Boolean

Default Value: false
Cannot be used in themes.

elementAttr

Specifies the global attributes to be attached to the UI component's container element.

Type:

Object

Default Value: {}

jQuery
$(function(){
    $("#pieChartContainer").dxPieChart({
        // ...
        elementAttr: {
            id: "elementId",
            class: "class-name"
        }
    });
});
Angular
HTML
TypeScript
<dx-pie-chart ...
    [elementAttr]="{ id: 'elementId', class: 'class-name' }">
</dx-pie-chart>
import { DxPieChartModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxPieChartModule
    ],
    // ...
})
Vue
App.vue
<template>
    <DxPieChart ...
        :element-attr="pieChartAttributes">
    </DxPieChart>
</template>

<script>
import DxPieChart from 'devextreme-vue/pie-chart';

export default {
    components: {
        DxPieChart
    },
    data() {
        return {
            pieChartAttributes: {
                id: 'elementId',
                class: 'class-name'
            }
        }
    }
}
</script>
React
App.js
import React from 'react';

import PieChart from 'devextreme-react/pie-chart';

class App extends React.Component {
    pieChartAttributes = {
        id: 'elementId',
        class: 'class-name'
    }

    render() {
        return (
            <PieChart ...
                elementAttr={this.pieChartAttributes}>
            </PieChart>
        );
    }
}
export default App;

export

Configures the exporting and printing features.

Type:

Object

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

innerRadius

Specifies the fraction of the inner radius relative to the total radius in the series of the 'doughnut' type. The value should be between 0 and 1.

Type:

Number

Default Value: 0.5
This member is exposed by the following entities:

Use this property to change the amount of space occupied by the inner area of the doughnut-type pie chart.

legend

Specifies PieChart legend properties.

Type:

Object

The PieChart UI component can include a legend. It helps you distinguish and identify the points of the displayed series. Each point is presented by an item on the legend. An item marker identifies the point's (slice's) color. An item label displays a value corresponding to the point. Use the legend property to set up PieChart legend properties to the required values. To learn more about the legend and its properties, refer to the Legend topic.

loadingIndicator

Configures the loading indicator.

Type:

Object

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

DevExtreme Charts - Loading indicator

To enable the automatic loading indicator, set the enabled property to true.

If you want to change the loading indicator's visibility, use the show property or the showLoadingIndicator() and hideLoadingIndicator() methods.

margin

Generates space around the UI component.

Type:

Object

WidgetMargin DevExtreme ChartJS

jQuery
index.js
$(function() {
    $("#pieChartContainer").dxPieChart({
        // ...
        margin: {
            top: 20,
            bottom: 20,
            left: 30,
            right: 30
        }
    });
});
Angular
app.component.html
app.component.ts
app.module.ts
<dx-pie-chart ... >
    <dxo-margin
        [top]="20"
        [bottom]="20"
        [left]="30"
        [right]="30">
    </dxo-margin>
</dx-pie-chart>
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 { DxPieChartModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxPieChartModule
    ],
    providers: [ ],
    bootstrap: [AppComponent]
})
export class AppModule { }
Vue
App.vue
<template>
    <DxPieChart ... >
        <DxMargin
            :top="20"
            :bottom="20"
            :left="30"
            :right="30"
        />
    </DxPieChart>
</template>

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

import DxPieChart, {
    DxMargin 
} from 'devextreme-vue/pie-chart';

export default {
    components: {
        DxPieChart,
        DxMargin
    },
    // ...
}
</script>
React
App.js
import React from 'react';

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

import PieChart, {
    Margin 
} from 'devextreme-react/pie-chart';

class App extends React.Component {
    render() {
        return (
            <PieChart ... >
                <Margin
                    top={20}
                    bottom={20}
                    left={30}
                    right={30}
                />
            </PieChart>
        );
    }
}
export default App;

minDiameter

Specifies the minimum diameter of the pie.

Type:

Number

Default Value: 0.5

This property specifies the minimum ratio between the pie's diameter and the UI component's width or height (depending on which of them is less). For example, assume that the UI component's size is 300x500 pixels and the minDiameter property is 0.7. Then, the diameter of the pie will never be less than:

0.7 * min(300,500) = 0.7 * 300 = 210 pixels

NOTE
This property is ignored if the diameter property is set.
See Also

onDisposing

A function that is executed before the UI component is disposed of.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

PieChart

The UI component's instance.

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

model any

Model data. Available only if you use Knockout.

Default Value: null

onDone

A function that is executed when all series are ready.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

PieChart

The UI component's instance.

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

model any

The model data. Available only if you use Knockout.

Default Value: null
Cannot be used in themes.

onDrawn

A function that is executed when the UI component's rendering has finished.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

PieChart

The UI component's instance.

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

model any

The model data. Available only if you use Knockout.

Default Value: null
Cannot be used in themes.

onExported

A function that is executed after the UI component is exported.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

PieChart

The UI component's instance.

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

model any

The model data. Available only if you use Knockout.

Default Value: null

onExporting

A function that is executed before the UI component is exported.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
cancel

Boolean

Allows you to prevent exporting.

component

PieChart

The UI component's instance.

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

fileName

String

The name of the file to which the UI component is about to be exported.

format

String

The resulting file format. One of PNG, PDF, JPEG, SVG and GIF.

model any

The model data. Available only if you use Knockout.

Default Value: null

onFileSaving

A function that is executed before a file with exported UI component is saved to the user's local storage.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
cancel

Boolean

Allows you to prevent file saving.

component

PieChart

The UI component's instance.

data

BLOB

Exported data as a BLOB.

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

fileName

String

The name of the file to be saved.

format

String

The format of the file to be saved.
Possible Values: 'PNG' | 'PDF' | 'JPEG' | 'SVG' | 'GIF'

Default Value: null

onIncidentOccurred

A function that is executed when an error or warning occurs.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

PieChart

The UI component's instance.

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

model any

The model data. Available only if you use Knockout.

target any

Information on the occurred incident.

Default Value: null

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.

onInitialized

A function used in JavaScript frameworks to save the UI component instance.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

PieChart

The UI component's instance.

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

Default Value: null

See Also

onLegendClick

A function that is executed when a legend item is clicked or tapped.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

PieChart

The UI component's instance.

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

event

Event (jQuery or EventObject)

The event that caused the function to execute. It is an EventObject or a jQuery.Event when you use jQuery.

model any

The model data. Available only if you use Knockout.

points

Array<Point>

The Point object(s).

target

String

|

Number

The argument of the point(s) corresponding to the clicked legend item.

Default Value: null
Cannot be used in themes.

See Also

onOptionChanged

A function that is executed after a UI component property is changed.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

PieChart

The UI component's instance.

fullName

String

The path to the modified property that includes all parent properties.

name

String

The modified property if it belongs to the first level. Otherwise, the first-level property it is nested into.

value any

The modified property's new value.

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

model any

Model data. Available only if you use Knockout.

Default Value: null

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

jQuery
index.js
$(function() {
    $("#pieChartContainer").dxPieChart({
        // ...
        onOptionChanged: function(e) {
            if(e.name === "changedProperty") {
                // handle the property change here
            }
        }
    });
});
Angular
app.component.html
app.component.ts
app.module.ts
<dx-pie-chart ...
    (onOptionChanged)="handlePropertyChange($event)"> 
</dx-pie-chart>
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 { DxPieChartModule } from 'devextreme-angular'; 

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

export class AppModule { }  
Vue
App.vue
<template> 
    <DxPieChart ...
        @option-changed="handlePropertyChange"
    />            
</template> 

<script>  
import 'devextreme/dist/css/dx.light.css'; 
import DxPieChart from 'devextreme-vue/pie-chart'; 

export default { 
    components: { 
        DxPieChart
    }, 
    // ...
    methods: { 
        handlePropertyChange: function(e) {
            if(e.name === "changedProperty") {
                // handle the property change here
            }
        }
    } 
} 
</script> 
React
App.js
import React from 'react';  
import 'devextreme/dist/css/dx.light.css'; 

import PieChart from 'devextreme-react/pie-chart'; 

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

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

onPointClick

A function that is executed when a series point is clicked or tapped.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

PieChart

The UI component's instance.

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

event

Event (jQuery or EventObject)

The event that caused the function to execute. It is an EventObject or a jQuery.Event when you use jQuery.

model any

The model data. Available only if you use Knockout.

target

Point

The clicked series point; described in the Point section.

Default Value: null
Cannot be used in themes.

onPointHoverChanged

A function that is executed after the pointer enters or leaves a series point.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

Object

The UI component's instance.

element

Object

The UI component's container.

target

Point

The series point whose hover state has been changed; described in the Point section.

Cannot be used in themes.

To identify whether the pointer has entered or left the series point, call the point's isHovered() method.

onPointSelectionChanged

A function that is executed when a series point is selected or selection is canceled.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

Object

The UI component's instance.

element

Object

The UI component's container.

target

Point

The series point whose selection state has been changed; described in the Point section.

Cannot be used in themes.

To identify whether the selection has been applied or canceled, call the point's isSelected() method.

onTooltipHidden

A function that is executed when a tooltip becomes hidden.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

PieChart

The UI component's instance.

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

model any

The model data. Available only if you use Knockout.

target

Point

|

Chart Annotation

| any

The series point whose tooltip is hidden; described in the Point section.

Default Value: null
Cannot be used in themes.

See Also

onTooltipShown

A function that is executed when a tooltip appears.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

PieChart

The UI component's instance.

element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.

model any

The model data. Available only if you use Knockout.

target

Point

|

Chart Annotation

| any

The series point whose tooltip is shown; described in the Point section.

Default Value: null
Cannot be used in themes.

See Also

palette

Sets the palette to be used to colorize series and their elements.

Type:

Array<String>

|

String

Default Value: 'Material'
Accepted Values: 'Bright' | 'Harmony Light' | 'Ocean' | 'Pastel' | 'Soft' | 'Soft Pastel' | 'Vintage' | 'Violet' | 'Carmine' | 'Dark Moon' | 'Dark Violet' | 'Green Mist' | 'Soft Blue' | 'Material' | 'Office'

This property accepts either the name of a predefined palette or an array of colors. The array can include the following colors:

See Also

paletteExtensionMode

Specifies what to do with colors in the palette when their number is less than the number of series (in the Chart UI component) or points in a series (in the PieChart UI component).

Type:

String

Default Value: 'blend'
Accepted Values: 'alternate' | 'blend' | 'extrapolate'

The following variants are available:

  • "blend"
    Create a blend of two neighboring colors and insert it between these colors in the palette.

  • "alternate"
    Repeat the full set of palette colors, alternating their normal, lightened, and darkened shades in that order.

  • "extrapolate"
    Repeat the full set of palette colors, changing their shade gradually from dark to light.

View Demo

pathModified

Notifies the UI component that it is embedded into an HTML page that uses a tag modifying the path.

Type:

Boolean

Default Value: false
Cannot be used in themes.

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

pointSelectionMode

Specifies whether a single point or multiple points can be selected in the chart.

Type:

String

Default Value: 'single'
Accepted Values: 'multiple' | 'single'

To set the points to highlight along with the selected point, set the series.selectionMode property.

redrawOnResize

Specifies whether to redraw the UI component when the size of the parent browser window changes or a mobile device rotates.

Type:

Boolean

Default Value: true
Cannot be used in themes.

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

NOTE
To redraw the UI component after the size of its container has changed, call the render() method of the UI component's instance.

resolveLabelOverlapping

Specifies how a chart must behave when point labels overlap.

Type:

String

Default Value: 'none'
Accepted Values: 'hide' | 'none' | 'shift'

Series point labels display series point values. If the series in your pie chart contains a large number of points, point labels may overlap. In this case, specify how the chart must resolve overlapping using the resolveLabelOverlapping property. To hide certain labels, set this property to 'hide'. Labels to be hidden will be determined automatically. To resolve overlapping by shifting labels from their positions, set the resolveLabelOverlapping property to 'shift'. In this case, it is recommended that you display label connectors so that pie segments are connected with their labels. If there is not enough space for all labels after they are shifted, labels with the smallest values will be hidden.

NOTE
If the position property is set to "inside", the "shift" mode in label overlapping is not available.

View Demo

rtlEnabled

Switches the UI component to a right-to-left representation.

Type:

Boolean

Default Value: false
Cannot be used in themes.

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.

JavaScript
DevExpress.config({
    rtlEnabled: true
});
NOTE
In a right-to-left representation, SVG elements have the direction attribute with the rtl value. This might cause problems when rendering left-to-right texts. Use this property if you have only right-to-left texts.

segmentsDirection

Specifies the direction that the pie chart segments will occupy.

Type:

String

Default Value: 'clockwise'
Accepted Values: 'anticlockwise' | 'clockwise'

series

Specifies properties for the series of the PieChart UI component.

Default Value: undefined
Cannot be used in themes.

A series represents a group of related data points. To configure a series, assign an object to the series property. If PieChart must contain several series, assign an array of such objects to the same property. Refer to the Series Overview topic to learn the basics of what a series is, what it does, and how it helps.

The definitive characteristic of a series is its type. The PieChart UI component provides two series types - Pie and Doughnut.

When you have a multi-series pie, settings that are common for all series can be specified all together. Use the commonSeriesSettings object to do this.

seriesTemplate

Defines properties for the series template.

Type:

Object

Default Value: undefined
Cannot be used in themes.

In most cases, you can organize the array that is assigned to the chart's dataSource property in the following way.

[
    {arg: arg1Value, series1Value: val11, series2Value: val12, ...}
    {arg: arg2Value, series1Value: val21, series2Value: val22, ...}
    ...
    {arg: argNValue, series1Value: valN1, series2Value: valN2, ...}
]

Each object that is included in the array represents an argument value and the values of all series for this argument.

However, there are some scenarios in which you do not know exactly how many series will be added. In these cases, you will not be able to define the data source in the manner detailed above. Instead, define it in the following way.

[
    {seriesName: series1, arg: arg11Value, val: value11 }
    {seriesName: series1, arg: arg12Value, val: value12 }
    ...
    {seriesName: seriesM, arg: argM1Value, val: valueM1 }
    {seriesName: seriesM, arg: argM2Value, val: valueM2 }
    ...
]

If you define a data source in this manner, set the argument and value fields using the argumentField and valueField properties of the commonSeriesSettings configuration object (for all series at once). Then, define a template for the series using the seriesTemplate configuration object. Within this object, set the data source field that specifies the series name to the nameField property.

If you need to specify individual values for properties of a particular series, assign a callback function to the customizeSeries property of the seriesTemplate object.

size

Specifies the UI component's size in pixels.

Type:

Object

Default Value: undefined

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.

jQuery
index.js
$(function() {
    $("#pieChartContainer").dxPieChart({
        // ...
        size: {
            height: 300,
            width: 600
        }
    });
});
Angular
app.component.html
app.component.ts
app.module.ts
<dx-pie-chart ... >
    <dxo-size
        [height]="300"
        [width]="600">
    </dxo-size>
</dx-pie-chart>
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 { DxPieChartModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxPieChartModule
    ],
    providers: [ ],
    bootstrap: [AppComponent]
})
export class AppModule { }
Vue
App.vue
<template>
    <DxPieChart ... >
        <DxSize
            :height="300"
            :width="600"
        />
    </DxPieChart>
</template>

<script>

import DxPieChart, {
    DxSize
} from 'devextreme-vue/pie-chart';

export default {
    components: {
        DxPieChart,
        DxSize
    },
    // ...
}
</script>
React
App.js
import React from 'react';

import PieChart, {
    Size
} from 'devextreme-react/pie-chart';

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

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

jQuery
index.js
styles.css
$(function() {
    $("#pieChart").dxPieChart({
        // ...
    });
});
#pieChart {
    width: 85%;
    height: 70%;
}
Angular
app.component.html
app.styles.css
<dx-pie-chart ...
    id="pieChart">
</dx-pie-chart>
#pieChart {
    width: 85%;
    height: 70%;
}
Vue
App.vue
<template>
    <DxPieChart ...
        id="pieChart">
    </DxPieChart>
</template>

<script>
import DxPieChart from 'devextreme-vue/pie-chart';

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

<style>
#pieChart {
    width: 85%;
    height: 70%;
}
</style>
React
App.js
styles.css
import React from 'react';

import PieChart from 'devextreme-react/pie-chart';

class App extends React.Component {
    render() {
        return (
            <PieChart ...
                id="pieChart">
            </PieChart>
        );
    }
}
export default App;
#pieChart {
    width: 85%;
    height: 70%;
}

sizeGroup

Allows you to display several adjoining pies in the same size.

Type:

String

Default Value: undefined

Besides the pie itself, the PieChart UI component comprises other diverse elements that affect the size of the pie. Therefore, when you display several PieChart UI components side by side, their pies may differ in size. To eliminate these differences, collect all the PieChart UI components in a single size group by setting their sizeGroup property to identical values. The UI components should have identical layouts, that is, the same container's size, position of the title and legend, etc. Note also that a single page can contain many size groups, but a UI component can be a member of only one of them.

View Demo

See Also

startAngle

Specifies the angle in arc degrees from which the first segment of a pie chart should start.

Type:

Number

Default Value: 0

theme

Sets the name of the theme the UI component uses.

Type:

String

Default Value: 'generic.light'
Accepted Values: 'generic.dark' | 'generic.light' | 'generic.contrast' | 'generic.carmine' | 'generic.darkmoon' | 'generic.darkviolet' | 'generic.greenmist' | 'generic.softblue' | 'material.blue.light' | 'material.lime.light' | 'material.orange.light' | 'material.purple.light' | 'material.teal.light'

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.

title

Configures the UI component's title.

Type:

Object

|

String

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.

Chart Demo

tooltip

Configures tooltips.

Type:

Object

A tooltip is a miniature rectangle displaying values of a series point. A tooltip appears when the end-user hovers the cursor over a series point. You can enable/disable tooltips, change their appearance and format their text using fields of the tooltip configuration object.

type

Specifies the type of the pie chart series.

Type:

String

Default Value: 'pie'
Accepted Values: 'donut' | 'doughnut' | 'pie'

See Series Overview for details.