Axis Origin & Position

By default the FlexChart places the X axis at the bottom of the plot area and the Y axis on the left. This keeps the axes outside the plot area and away from the data.

You can change this default behavior using two properties:

  • position: Specifies the position of the axis as None, Left, Top, Right, Bottom, or Auto.
  • origin: Specifies the value where the axis crosses its perpendicular axis. If speficied, origin takes precendence over position.

Learn about FlexChart | Axis Origin & Position Documentation | FlexChart API Reference

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import './styles.css'; import { isArray } from '@mescius/wijmo'; import { FlexChart, Palettes } from '@mescius/wijmo.chart'; import { getData } from './data'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // create the chart let theChart = new FlexChart('#theChart', { chartType: 'Scatter', axisY: { axisLine: true, majorGrid: false, origin: 0, majorUnit: 1, max: 1, min: -1, labels: false }, axisX: { origin: 0, min: -1, max: 1, majorUnit: 1, labels: false }, legend: { position: 'None' }, tooltip: { content: '' }, bindingX: 'x', itemsSource: getData(750), series: [ { name: 'data1', binding: 'y1' }, { name: 'data2', binding: 'y2' } ] }); theChart.palette = getRandomPalette(); } // function getRandomPalette() { let palettes = Object.keys(Palettes).filter(prop => isArray(Palettes[prop])); let rand = Math.floor(Math.random() * palettes.length); // return Palettes[palettes[rand]]; }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexChart Axis Origin & Position</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'); </script> </head> <body> <div class="container-fluid"> <div id="theChart"></div> </div> </body> </html>
// Generate random data source export function getData(num) { let data = [], cnt = 0; for (let i = 0; cnt < num; i++) { let x = 1 - 2 * Math.random(); let y = 1 - 2 * Math.random(); if (x * x + y * y <= 1) { data.push({ x: x, y1: y, y2: 0 - y }); cnt++; } } return data; }
.wj-flexchart { height: 600px; width: 600px; margin: 10px 0; } body { margin-bottom: 24pt; }
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