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Line Charts

Point Image

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This demo shows that the Chart can display custom images instead of standard point symbols.

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window.onload = function () { const viewModel = { chartOptions: { dataSource, commonSeriesSettings: { argumentField: 'year', valueField: 'place', type: 'spline', point: { visible: false, }, }, export: { enabled: true, formats: ['PNG', 'PDF', 'JPEG', 'GIF', 'SVG'], }, customizePoint() { if (this.value === 1) { return { image: { url: '../../../../images/Charts/PointImage/icon-medal-gold.png', width: 20, height: 20 }, visible: true }; } if (this.value === 2) { return { image: { url: '../../../../images/Charts/PointImage/icon-medal-silver.png', width: 20, height: 20 }, visible: true }; } if (this.value === 3) { return { image: { url: '../../../../images/Charts/PointImage/icon-medal-bronse.png', width: 20, height: 20 }, visible: true }; } return null; }, series: { color: '#888888', }, title: { text: 'Canadian Men’s National Ice Hockey Team\n at the World Championships', }, legend: { visible: false, }, argumentAxis: { grid: { visible: true, }, label: { format: { type: 'decimal', }, }, allowDecimals: false, axisDivisionFactor: 60, }, valueAxis: { grid: { visible: false, }, inverted: true, label: { customizeText() { if (this.valueText === '1') { return `${this.valueText}st place`; } if (this.valueText === '2') { return `${this.valueText}nd place`; } if (this.valueText === '3') { return `${this.valueText}rd place`; } return `${this.valueText}th place`; }, }, }, }, }; ko.applyBindings(viewModel, document.getElementById('chart-demo')); };
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <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" /> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</script> <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.2/knockout-min.js"></script> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.2.3/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.2.3/css/dx.light.css" /> <script src="https://cdn3.devexpress.com/jslib/21.2.3/js/dx.all.js"></script> <script src="data.js"></script> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="index.js"></script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="chart-demo"> <div id="chart" data-bind="dxChart: chartOptions"></div> </div> </div> </body> </html>
#chart { height: 440px; }
const dataSource = [{ year: 1977, place: 4, }, { year: 1978, place: 3, }, { year: 1979, place: 4, }, { year: 1981, place: 4, }, { year: 1982, place: 3, }, { year: 1983, place: 3, }, { year: 1985, place: 2, }, { year: 1986, place: 3, }, { year: 1987, place: 4, }, { year: 1989, place: 2, }, { year: 1990, place: 4, }, { year: 1991, place: 2, }, { year: 1992, place: 8, }, { year: 1993, place: 4, }, { year: 1994, place: 1, }, { year: 1995, place: 3, }, { year: 1996, place: 2, }, { year: 1997, place: 1, }, { year: 1998, place: 6, }, { year: 1999, place: 4, }, { year: 2000, place: 4, }, { year: 2001, place: 5, }, { year: 2002, place: 6, }, { year: 2003, place: 1, }, { year: 2004, place: 1, }, { year: 2005, place: 2, }, { year: 2006, place: 4, }, { year: 2007, place: 1, }, { year: 2008, place: 2, }, { year: 2009, place: 2, }, { year: 2010, place: 7, }, { year: 2011, place: 5, }, { year: 2012, place: 5, }, { year: 2013, place: 5, }];