Data Labels (Vue)

The dataLabels property allows you to show labels next to each data point on the chart.

This example uses Vue.

<template> <div class="container-fluid"> <div class="form-group"> <label for="labelPosition">Label Position: </label> <wj-combo-box :itemsSource="comboData" :textChanged="textChanged" text="Top"></wj-combo-box><br /> <label for="linesAndBorders">Lines/Borders: </label> <input id="linesAndBorders" type="checkbox" v-on:click="lbClick" /><br /> <label for="downloadsOnly">2016 Only: </label> <input id="downloadsOnly" type="checkbox" v-model="downloadsOnly" v-on:click="doClick" /> </div> <div class="form-group"> <wj-flex-chart :itemsSource="data" bindingX="country" tooltipContent="" header="Country GDP" :palette="palette" :initialized="chartInitialized"> <wj-flex-chart-series binding="2014" name="2014"></wj-flex-chart-series> <wj-flex-chart-series binding="2015" name="2015"></wj-flex-chart-series> <wj-flex-chart-series binding="2016" name="2016"></wj-flex-chart-series> <wj-flex-chart-data-label content="{value:n0,,}T" position="Top"></wj-flex-chart-data-label> </wj-flex-chart> </div> </div> </template> <script> import "@grapecity/wijmo.styles/wijmo.css"; import 'bootstrap.css'; import Vue from 'vue'; import '@grapecity/wijmo.vue2.core'; import '@grapecity/wijmo.vue2.input'; import '@grapecity/wijmo.vue2.chart'; import { getData, getComboData } from './data'; import * as wjChart from '@grapecity/wijmo.chart'; let App = Vue.extend({ name: 'app', data: function () { return { data: getData(), comboData: getComboData(), palette: this.getRandomPalette(), downloadsOnly: false } }, methods: { chartInitialized(flex) { this.theChart = flex; flex.dataLabel.rendering.addHandler(function(_, e) { if (this.downloadsOnly && e.hitTestInfo.series.binding != '2016') { e.cancel = true; // labels only for the "downloads" series } }, this); }, textChanged(s) { if(this.theChart) { this.theChart.dataLabel.position = s.text; } }, getRandomPalette() { let palettes = Object.getOwnPropertyNames(wjChart.Palettes) .filter(prop => typeof wjChart.Palettes[prop] === "object" && prop !== 'prototype'); let rand = Math.floor(Math.random() * palettes.length); // return wjChart.Palettes[palettes[rand]]; }, lbClick(cb) { let dl = this.theChart.dataLabel; dl.connectingLine = dl.border = cb.target.checked; }, doClick() { this.theChart.invalidate(); } } }) new Vue({ render: h => h(App) }).$mount('#app'); </script> <style> body { margin-bottom: 24px; } label { margin-right: 3px; } </style>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexChart Data Labels</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app.vue'); </script> </head> <body> <div id="app"></div> </body> </html>
export function getData() { return [ { country: 'United States', '2014': 17348075, '2015': 18036650, '2016': 18624450 }, { country: 'China', '2014': 10356508, '2015': 11181556, '2016': 11232110 }, { country: 'Japan', '2014': 4602367, '2015': 4124211, '2016': 4936540 }, { country: 'Germany', '2014': 3874437, '2015': 3365293, '2016': 3479230 }, { country: 'United Kingdom', '2014': 2950039, '2015': 2858482, '2016': 2629190 }, { country: 'France', '2014': 2833687, '2015': 2420163, '2016': 2466470 }, { country: 'India', '2014': 2051228, '2015': 2073002, '2016': 2263790 }, { country: 'Italy', '2014': 2147744, '2015': 1815759, '2016': 1850740 } ]; } export function getComboData() { return 'None,Left,Top,Right,Bottom,Center'.split(','); }
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