ScatterGL (Vue)

The sample shows a scatter chart with large data which uses high performance WebGL rendering.

This example uses Vue.

<template> <div class="container-fluid"> <div class="row"> <div class="col-sm-12"> <wj-menu header="NumPoints" :value="numberOfPoints" :itemClicked="numPointsChanged"> <wj-menu-item :value="1000">1K</wj-menu-item> <wj-menu-item :value="10000">10K</wj-menu-item> <wj-menu-item :value="100000">100K</wj-menu-item> <wj-menu-item v-if="notIE" :value="200000">200K</wj-menu-item> <wj-menu-item v-if="notIE" :value="500000">500K</wj-menu-item> </wj-menu> <wj-menu header="NumSeries" :value="numberOfSeries" :itemClicked="numSeriesChanged"> <wj-menu-item :value="1">1</wj-menu-item> <wj-menu-item :value="2">2</wj-menu-item> <wj-menu-item :value="4">4</wj-menu-item> <wj-menu-item :value="8">8</wj-menu-item> </wj-menu> <wj-menu header="Symbol" :value="seriesSymbol" :itemClicked="symbolChanged"> <wj-menu-item :value="'Dot'">Dot</wj-menu-item> <wj-menu-item :value="'Box'">Box</wj-menu-item> </wj-menu> <wj-menu header="Size" :value="symbolSize" :itemClicked="sizeChanged"> <wj-menu-item :value="3">3</wj-menu-item> <wj-menu-item :value="5">5</wj-menu-item> <wj-menu-item :value="10">10</wj-menu-item> <wj-menu-item :value="20">20</wj-menu-item> <wj-menu-item :value="50">50</wj-menu-item> </wj-menu> <label> Use WebGL <input id="webgl" type="checkbox" v-model="useWebGL" /> </label> </div> </div> <div class="row"> <div class="col-sm-12"> <wj-flex-chart :initialized="initialize" :renderEngine="renderEngine" chartType="Scatter" bindingX="x" binding="y" :symbolSize="symbolSize"> <wj-flex-chart-axis wjProperty="axisX" :min="-2" :max="2" /> <wj-flex-chart-axis wjProperty="axisY" :min="-2" :max="2" :axisLine="true" :majorGrid="false" /> <wj-flex-chart-gestures interactiveAxes="XY" mouseAction="Zoom" :initialized="gesturesInitialized" :scaleY="1" :posY="0.5" :scaleX="1" :posX="0.5" /> </wj-flex-chart> </div> </div> <div class="row"> <div class="col-sm-12"> <button id="btnNew" @click="refreshData">Refresh Data</button> <button id="btnReset" @click="resetZoom">Reset Zoom</button> </div> </div> </div> </template> <script> import 'bootstrap.css'; import "@mescius/wijmo.styles/wijmo.css"; import { createApp } from "vue"; import { registerInput } from "@mescius/wijmo.vue2.input"; import { registerChart } from "@mescius/wijmo.vue2.chart"; import { registerChartInteraction } from "@mescius/wijmo.vue2.chart.interaction"; import { isIE } from "@mescius/wijmo"; import * as wjChart from "@mescius/wijmo.chart"; import { WebGLRenderEngine } from '@mescius/wijmo.chart.webgl'; import { getData } from './data'; let App = { name: 'app', data: function () { return { numberOfPoints: isIE() ? 10000 : 100000, numberOfSeries: 1, seriesSymbol: 'Dot', symbolSize: 3, useWebGL: true, notIE: !isIE() }; }, created() { this.webglEng = new WebGLRenderEngine(); this.svgEng = new wjChart.SvgRenderEngine(); }, mounted() { this.refreshData(); }, computed: { renderEngine: function () { return this.useWebGL ? this.webglEng : this.svgEng; } }, methods: { initialize(chart) { this.chart = chart; }, numPointsChanged: function (s) { this.numberOfPoints = s.selectedValue; this.refreshData(); }, numSeriesChanged: function (s) { this.numberOfSeries = s.selectedValue; this.refreshData(); }, symbolChanged: function (s) { this.seriesSymbol = s.selectedValue; this.chart.beginUpdate(); this.chart.series.forEach(s => s.symbolMarker = this.seriesSymbol); this.chart.endUpdate(); }, sizeChanged: function (s) { this.symbolSize = s.selectedValue; this.chart.beginUpdate(); this.chart.series.forEach(s => s.symbolSize = this.symbolSize); this.chart.endUpdate(); }, refreshData: function () { const data = []; const nser = this.numberOfSeries; const npts = this.numberOfPoints; const chart = this.chart; chart.beginUpdate(); chart.series.clear(); for (let i = 0; i < nser; i++) { chart.series.push(new wjChart.Series({ itemsSource: getData(Math.random() - 0.5, Math.random() - 0.5, npts / nser, 0.5 * (1 - i / nser)), name: 'ser ' + (i + 1), symbolStyle: { strokeWidth: 0 }, symbolMarker: this.seriesSymbol, symbolSize: this.symbolSize })); } chart.endUpdate(); }, gesturesInitialized: function (s) { this.gestures = s; }, resetZoom: function () { this.gestures.reset(); } }, }; const app = createApp(App); // register all components and directives from Wijmo modules registerInput(app); registerChart(app); registerChartInteraction(app); app.mount('#app'); </script> <style> .wj-flexchart { width: 600px; height: 500px !important; margin: 0; } </style>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>WebGL</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.21.5/system.src.js" integrity="sha512-skZbMyvYdNoZfLmiGn5ii6KmklM82rYX2uWctBhzaXPxJgiv4XBwJnFGr5k8s+6tE1pcR1nuTKghozJHyzMcoA==" crossorigin="anonymous"></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(cx, cy, n, maxr) { let data = new Array(n); let r0 = 0.1 + maxr; for (let i = 0; i < data.length; i++) { let a = 2 * Math.PI * Math.random(); let r = r0 * Math.sqrt(-2 * Math.log(Math.random())); data[i] = { x: cx + r * Math.cos(a), y: cy + r * Math.sin(a) }; } return data; }
(function (global) { System.config({ transpiler: 'plugin-babel', babelOptions: { es2015: true }, meta: { '*.css': { loader: 'css' }, '*.vue': { loader: 'vue-loader' } //'*.vue': { loader: 'systemjs-plugin-vue' } }, paths: { // paths serve as alias 'npm:': 'node_modules/' }, // map tells the System loader where to look for things map: { '@mescius/wijmo': 'npm:@mescius/wijmo/index.js', '@mescius/wijmo.input': 'npm:@mescius/wijmo.input/index.js', '@mescius/wijmo.styles': 'npm:@mescius/wijmo.styles', '@mescius/wijmo.cultures': 'npm:@mescius/wijmo.cultures', '@mescius/wijmo.chart': 'npm:@mescius/wijmo.chart/index.js', '@mescius/wijmo.chart.analytics': 'npm:@mescius/wijmo.chart.analytics/index.js', '@mescius/wijmo.chart.animation': 'npm:@mescius/wijmo.chart.animation/index.js', '@mescius/wijmo.chart.annotation': 'npm:@mescius/wijmo.chart.annotation/index.js', '@mescius/wijmo.chart.finance': 'npm:@mescius/wijmo.chart.finance/index.js', '@mescius/wijmo.chart.finance.analytics': 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'npm:@mescius/wijmo.grid.multirow/index.js', '@mescius/wijmo.grid.transposed': 'npm:@mescius/wijmo.grid.transposed/index.js', '@mescius/wijmo.grid.transposedmultirow': 'npm:@mescius/wijmo.grid.transposedmultirow/index.js', '@mescius/wijmo.grid.pdf': 'npm:@mescius/wijmo.grid.pdf/index.js', '@mescius/wijmo.grid.sheet': 'npm:@mescius/wijmo.grid.sheet/index.js', '@mescius/wijmo.grid.xlsx': 'npm:@mescius/wijmo.grid.xlsx/index.js', '@mescius/wijmo.grid.selector': 'npm:@mescius/wijmo.grid.selector/index.js', '@mescius/wijmo.grid.cellmaker': 'npm:@mescius/wijmo.grid.cellmaker/index.js', '@mescius/wijmo.nav': 'npm:@mescius/wijmo.nav/index.js', '@mescius/wijmo.odata': 'npm:@mescius/wijmo.odata/index.js', '@mescius/wijmo.olap': 'npm:@mescius/wijmo.olap/index.js', '@mescius/wijmo.rest': 'npm:@mescius/wijmo.rest/index.js', '@mescius/wijmo.pdf': 'npm:@mescius/wijmo.pdf/index.js', '@mescius/wijmo.pdf.security': 'npm:@mescius/wijmo.pdf.security/index.js', '@mescius/wijmo.viewer': 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'@vue/compiler-dom':'npm:@vue/compiler-dom/dist/compiler-dom.global.prod.js', '@vue/runtime-dom':'npm:@vue/runtime-dom/dist/runtime-dom.global.prod.js', '@vue/shared':'npm:@vue/shared/dist/shared.cjs.js', '@vue/compiler-dom':'npm:@vue/compiler-dom/dist/compiler-dom.global.prod.js', '@vue/runtime-dom':'npm:@vue/runtime-dom/dist/runtime-dom.global.prod.js', '@vue/shared':'npm:@vue/shared/dist/shared.cjs.js', '@vue/compiler-dom':'npm:@vue/compiler-dom/dist/compiler-dom.global.prod.js', '@vue/runtime-dom':'npm:@vue/runtime-dom/dist/runtime-dom.global.prod.js', '@vue/shared':'npm:@vue/shared/dist/shared.cjs.js', '@vue/compiler-dom':'npm:@vue/compiler-dom/dist/compiler-dom.global.prod.js', '@vue/runtime-dom':'npm:@vue/runtime-dom/dist/runtime-dom.global.prod.js', '@vue/shared':'npm:@vue/shared/dist/shared.cjs.js', '@vue/compiler-dom':'npm:@vue/compiler-dom/dist/compiler-dom.global.prod.js', '@vue/runtime-dom':'npm:@vue/runtime-dom/dist/runtime-dom.global.prod.js', '@vue/shared':'npm:@vue/shared/dist/shared.cjs.js', 'vue-loader': 'npm:systemjs-vue-browser/index.js', //'systemjs-plugin-vue': 'npm:systemjs-plugin-vue/index.js', 'plugin-babel': 'npm:systemjs-plugin-babel/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel/systemjs-babel-browser.js' }, // packages tells the System loader how to load when no filename and/or no extension packages: { src: { defaultExtension: 'js' }, rxjs: { defaultExtension: 'js' }, "node_modules": { defaultExtension: 'js' }, wijmo: { defaultExtension: 'js', } } }); })(this);