Angular PieChart Properties

See Also

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 in CodePen

See Also

• Adaptive Layout

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

$(function() {
    $("#pieChartContainer").dxPieChart({
        // ...
        animation: {
            easing: "linear",
            duration: 500,
            maxPointCountSupported: 100
        }
    });
});

<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 { }

<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>

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

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:

$(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;
            }
        }]
    });
});

<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 { }

<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>

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

• customizeAnnotation

You need to render template content as an SVG element. The following code snippet shows how to specify a custom template for content in the PieChart's center:

$(function(){
    $("#pieChartContainer").dxPieChart({
        // ...
        type: "doughnut", 
        centerTemplate: (pie, container) => {
            const circle = createCircle("green", "yellow");
            const text = createText(20, 80, 12, 'start', "Doughnut PieChart");

            container.appendChild(circle);
            container.appendChild(text);
        },
    });
});

function createCircle(stroke, fill) {
    const circle = document.createElementNS('http://www.w3.org/2000/svg', 'circle');

    circle.setAttribute('cx', 72);
    circle.setAttribute('cy', 80);
    circle.setAttribute('r', 70);
    circle.setAttribute('stroke-width', 4);
    circle.setAttribute('stroke', stroke);
    circle.setAttribute('fill', fill);

    return circle;
}

function createText(x, y, fontSize, textAnchor, content) {
    const text = document.createElementNS('http://www.w3.org/2000/svg', 'text');

    text.setAttribute('x', x);
    text.setAttribute('y', y);
    text.setAttribute('fill', '#000');
    text.setAttribute('text-anchor', textAnchor);
    text.setAttribute('font-size', fontSize);

    text.textContent = content;

    return text;
}

<dx-pie-chart type="doughnut" centerTemplate="centerTemplate" ... >
    <svg *dxTemplate="let pie of 'centerTemplate'">
        <circle cx="72" cy="80" r="70" stroke="green" stroke-width="4" fill="yellow" />
        <text text-anchor="start" y="80" x="20" fill="#000" font-size="12">
           Doughnut PieChart
        </text>
    </svg>
</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 { } 

<template>
    <DxPieChart type="doughnut" center-template="centerTemplate" ... >
        <template #centerTemplate="data">
            <svg>
                <circle cx="72" cy="80" r="70" stroke="green" stroke-width="4" fill="yellow" />
                <text text-anchor="start" y="80" x="20" fill="#000" font-size="12">
                    Doughnut PieChart
                </text>
            </svg>
        </template>
    >
    </DxPieChart>
</template>

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

export default {
    components: {
        DxPieChart
    },
    data() {
        return {
            // ...
        }
    }
}
</script>

<template>
    <DxPieChart type="doughnut" center-template="centerTemplate" ... >
        <template #centerTemplate="data">
            <svg>
                <circle cx="72" cy="80" r="70" stroke="green" stroke-width="4" fill="yellow" />
                <text text-anchor="start" y="80" x="20" fill="#000" font-size="12">
                    Doughnut PieChart
                </text>
            </svg>
        </template>
    >
    </DxPieChart>
</template>

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

const data = { ... };
// ...
</script>

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

const CenterTemplate = (pie) => {
    return (
        <svg>
            <circle cx="72" cy="80" r="70" stroke="green" stroke-width="4" fill="yellow" />
            <text text-anchor="start" y="80" x="20" fill="#000" font-size="12">
                Doughnut Pie Chart
            </text>
        </svg>
    );
}

export default function App() {   
    return ( 
        <PieChart type="doughnut" centerRender={CenterTemplate} ... >   
            { /* ... */ } 
        </PieChart>       
    ); 
} 

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:

$(function() {
    $("#pieChart").dxPieChart({
        // ...
        commonAnnotationSettings: {
            tooltipEnabled: false
        }
    });
});

<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 { }

<template>
    <DxPieChart ... >
        <DxCommonAnnotationSettings
            :tooltip-enabled="false"
        />
    </DxPieChart>
</template>

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

export default {
    components: {
        DxPieChart,
        DxCommonAnnotationSettings
    },
    data() {
        // ...
    }
}
</script>

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

• customizeAnnotation

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

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

$(function() {
    $("#pieChartContainer").dxPieChart({
        // ...
        customizeAnnotation: function(annotationItem) {
            if(annotationItem.text) {
                annotationItem.color = "red";
            }
            if(annotationItem.image) {
                annotationItem.color = "blue";
            }
            return annotationItem;
        }
    });
});

<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 { }

<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>

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>
    );
}

@(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

• annotations[]
• commonAnnotationSettings

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.

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.

• border
• color
• hoverStyle
• selectionStyle

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.

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

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:

  • DevExtreme.AspNet.Data
  • DevExtreme-PHP-Data
  • devextreme-query-mongodb

  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.

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

• minDiameter
• size
• sizeGroup

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)

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

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.

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

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.

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

See Also

• size
• sizeGroup

See Also

• getAllSeries()
• getSeriesByName(seriesName)
• getSeriesByPos(seriesIndex)

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.

<dx-pie-chart ...
    (onInitialized)="saveInstance($event)">
</dx-pie-chart>

import { Component } from "@angular/core";
import PieChart from "devextreme/ui/data_grid";
// ...
export class AppComponent {
    pieChartInstance: PieChart;
    saveInstance (e) {
        this.pieChartInstance = e.component;
    }
}

<template>
    <div>
        <DxPieChart ...
            @initialized="saveInstance">
        </DxPieChart>
    </div>
</template>

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

export default {
    components: {
        DxPieChart
    },
    data: function() {
        return {
            pieChartInstance: null
        };
    },
    methods: {
        saveInstance: function(e) {
            this.pieChartInstance = e.component;
        }
    }
};
</script>

<template>
    <div>
        <DxPieChart ...
            @initialized="saveInstance">
        </DxPieChart>
    </div>
</template>

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

let pieChartInstance = null;

const saveInstance = (e) => {
    pieChartInstance = e.component;
}
</script>

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

class App extends React.Component {
    constructor(props) {
        super(props);

        this.saveInstance = this.saveInstance.bind(this);
    }

    saveInstance(e) {
        this.pieChartInstance = e.component;
    }

    render() {
        return (
            <div>
                <PieChart onInitialized={this.saveInstance} />
            </div>
        );
    }
}

See Also

See Also

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

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

<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 { }  

<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> 

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}
        />        
    ); 
} 

$(function () {
    $("#pieChartContainer").dxPieChart({
        // ...
        onPointClick: function (e) {
            e.cancel = true;
        }
    });
});

import { DxPieChartModule } from "devextreme-angular";
// ...
export class AppComponent {
    cancelSeriesClick (e) {
        e.cancel = true;
    }
}
@NgModule({
    imports: [
        // ...
        DxPieChartModule
    ],
    // ...
})

<dx-pie-chart ...
    (onPointClick)="cancelSeriesClick($event)">
</dx-pie-chart>

<template>
    <DxPieChart ...
        @point-click="cancelSeriesClick">
    </DxPieChart>
</template>

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

export default {
    components: {
        DxPieChart
    },
    methods: {
        cancelSeriesClick (e) {
            e.cancel = true;
        }
    }
}
</script>

import React from 'react';

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

class App extends React.Component {
    render() {
        return (
            <PieChart ...
                onPointClick={this.cancelSeriesClick}>
            </PieChart>
        );
    }

    cancelSeriesClick (e) {
        e.cancel = true;
    }
}

export default App;

Bar Chart Demo

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

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

See Also

• hideTooltip()
• Point.hideTooltip()

See Also

• Point.showTooltip()

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

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

See Also

• Palettes
• paletteExtensionMode
• DevExpress.viz.generateColors(palette, count, options)
• series.color

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

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()

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

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

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.

View Demo

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
});

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.

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.

You can specify a custom width and height for the component:

Assign 0 to the size object's height and width properties to hide the component.

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

<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 { }

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

<script>

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

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

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 use CSS to style the UI component's container:

$(function() {
    $("#pieChart").dxPieChart({
        // ...
    });
});

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

<dx-pie-chart ...
    id="pieChart">
</dx-pie-chart>

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

<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>

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%;
}

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

• size
• diameter
• minDiameter

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.

Chart Demo

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.

See Series Overview for details.