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Bar Charts

Customize Points and Labels

Documentation

This demo shows how you can customize individual points and labels in the Chart.

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<template> <DxChart id="chart" :customize-point="customizePoint" :customize-label="customizeLabel" :data-source="dataSource" title="Daily Temperature in May" > <DxSeries argument-field="day" value-field="value" type="bar" color="#e7d19a" /> <DxValueAxis :max-value-margin="0.01"> <DxVisualRange :start-value="40"/> <DxLabel :customize-text="customizeText"/> <DxConstantLine :width="2" :value="lowAverage" color="#8c8cff" dash-style="dash" > <DxLabel text="Low Average"/> </DxConstantLine> <DxConstantLine :width="2" :value="highAverage" color="#ff7c7c" dash-style="dash" > <DxLabel text="High Average"/> </DxConstantLine> </DxValueAxis> <DxLegend :visible="false"/> <DxExport :enabled="true"/> </DxChart> </template> <script> import { DxChart, DxSeries, DxValueAxis, DxVisualRange, DxLabel, DxConstantLine, DxLegend, DxExport } from 'devextreme-vue/chart'; import { temperaturesData } from './data.js'; export default { components: { DxChart, DxSeries, DxValueAxis, DxVisualRange, DxLabel, DxConstantLine, DxLegend, DxExport }, data() { return { highAverage: 77, lowAverage: 58, dataSource: temperaturesData }; }, methods: { customizePoint({ value }) { if (value > this.highAverage) { return { color: '#ff7c7c', hoverStyle: { color: '#ff7c7c' } }; } else if (value < this.lowAverage) { return { color: '#8c8cff', hoverStyle: { color: '#8c8cff' } }; } }, customizeLabel({ value }) { if (value > this.highAverage) { return { visible: true, backgroundColor: '#ff7c7c', customizeText: function({ valueText }) { return `${valueText}&#176F`; } }; } }, customizeText({ valueText }) { return `${valueText}&#176F`; } } }; </script> <style> #chart { height: 440px; } </style>
import { createApp } from 'vue'; import App from './App.vue'; createApp(App).mount('#app');
<!DOCTYPE html> <html> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.6/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.6/css/dx.light.css" /> <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script type="text/javascript" src="config.js"></script> <script type="text/javascript"> System.import('./index.js'); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"> </div> </div> </body> </html>
export const temperaturesData = [{ day: '1', value: 57 }, { day: '2', value: 58 }, { day: '3', value: 57 }, { day: '4', value: 59 }, { day: '5', value: 63 }, { day: '6', value: 63 }, { day: '7', value: 63 }, { day: '8', value: 64 }, { day: '9', value: 64 }, { day: '10', value: 64 }, { day: '11', value: 69 }, { day: '12', value: 72 }, { day: '13', value: 75 }, { day: '14', value: 78 }, { day: '15', value: 76 }, { day: '16', value: 70 }, { day: '17', value: 65 }, { day: '18', value: 65 }, { day: '19', value: 68 }, { day: '20', value: 70 }, { day: '21', value: 73 }, { day: '22', value: 73 }, { day: '23', value: 75 }, { day: '24', value: 78 }, { day: '25', value: 76 }, { day: '26', value: 76 }, { day: '27', value: 80 }, { day: '28', value: 76 }, { day: '29', value: 75 }, { day: '30', value: 75 }, { day: '31', value: 74 }];
window.config = { transpiler: 'plugin-babel', meta: { '*.vue': { loader: 'vue-loader' }, 'devextreme/localization.js': { "esModule": true }, }, paths: { 'npm:': 'https://unpkg.com/' }, map: { 'vue': 'npm:vue@3.0.0/dist/vue.esm-browser.js', 'vue-loader': 'npm:dx-systemjs-vue-browser@1.0.15/index.js', 'mitt': 'npm:mitt/dist/mitt.umd.js', 'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js', 'luxon': 'npm:luxon@1.28.0/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign@1.1.0', 'devextreme': 'npm:devextreme@21.1.6/cjs', 'devextreme-vue': 'npm:devextreme-vue@21.1.6', 'jszip': 'npm:jszip@3.7.1/dist/jszip.min.js', 'devextreme-quill': 'npm:devextreme-quill@1.4.2/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.1.32/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@3.0.14/dist/dx-gantt.js', '@devextreme/vdom': 'npm:@devextreme/vdom@1.2.2', 'inferno': 'npm:inferno@7.4.10/dist/inferno.min.js', 'inferno-compat': 'npm:inferno-compat@7.4.10/dist/inferno-compat.min.js', 'inferno-create-element': 'npm:inferno-create-element@7.4.10/dist/inferno-create-element.min.js', 'inferno-dom': 'npm:inferno-dom@1.0.7/dist/inferno-dom.min.js', 'inferno-hydrate': 'npm:inferno-hydrate@7.4.10/dist/inferno-hydrate.min.js', 'inferno-clone-vnode': 'npm:inferno-clone-vnode@7.4.10/dist/inferno-clone-vnode.min.js', 'inferno-create-class': 'npm:inferno-create-class@7.4.10/dist/inferno-create-class.min.js', 'inferno-extras': 'npm:inferno-extras@7.4.10/dist/inferno-extras.min.js', 'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js' }, packages: { 'devextreme-vue': { main: 'index.js' }, 'devextreme': { defaultExtension: 'js' }, '@devextreme/vdom': { defaultExtension: 'js' }, 'devextreme/events/utils': { main: 'index' }, 'devextreme/events': { main: 'index' }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js' } }, packageConfigPaths: [ "npm:@devextreme/*/package.json", ], babelOptions: { sourceMaps: false, stage0: true } }; System.config(window.config);