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Charts

Dynamic Series from the DataSource

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In this example, data for series is provided in a peculiar manner. Each object in the data source represents a point in a single series. To define series in this case, use the seriesTemplate object where you need to specify the data field providing series names and custom settings for a given series. Settings common to all series must be set within the commonSeriesSettings object. Providing data in this manner is useful when the number of points within a single series changes over time.

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window.onload = function() { var viewModel = { chartOptions: { palette: "violet", dataSource: dataSource, commonSeriesSettings: { argumentField: "country", valueField: "oil", type: "bar" }, seriesTemplate: { nameField: "year", customizeSeries: function(valueFromNameField) { return valueFromNameField === 2009 ? { type: "line", label: { visible: true }, color: "#ff3f7a" } : {}; } }, title: { text: "Oil Production", subtitle: { text: "(in millions tonnes)" } }, "export": { enabled: true }, legend: { verticalAlignment: "bottom", horizontalAlignment: "center" } } }; 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/3.1.0/jquery.min.js"></script> <script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery-3.1.0.min.js"%3E%3C/script%3E'))</script> <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.0/knockout-min.js"></script> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/17.2.4/css/dx.spa.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/17.2.4/css/dx.common.css" /> <link rel="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/17.2.4/css/dx.light.css" /> <script src="https://cdn3.devexpress.com/jslib/17.2.4/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; width: 100%; }
var dataSource = [{ year: 1970, country: "Saudi Arabia", oil: 192.2 }, { year: 1970, country: "USA", oil: 533.5 }, { year: 1970, country: "Iran", oil: 192.6 }, { year: 1970, country: "Mexico", oil: 24.2 }, { year: 1980, country: "Saudi Arabia", oil: 509.8 }, { year: 1980, country: "USA", oil: 480.2 }, { year: 1980, country: "Iran", oil: 74.3 }, { year: 1980, country: "Mexico", oil: 107.2 }, { year: 1990, country: "Saudi Arabia", oil: 342.6 }, { year: 1990, country: "USA", oil: 416.6 }, { year: 1990, country: "Iran", oil: 162.8 }, { year: 1990, country: "Mexico", oil: 146.3 }, { year: 1990, country: "Russia", oil: 515.9 }, { year: 2000, country: "Saudi Arabia", oil: 456.3 }, { year: 2000, country: "USA", oil: 352.6 }, { year: 2000, country: "Iran", oil: 191.3 }, { year: 2000, country: "Mexico", oil: 171.2 }, { year: 2000, country: "Russia", oil: 323.3 }, { year: 2008, country: "Saudi Arabia", oil: 515.3 }, { year: 2008, country: "USA", oil: 304.9 }, { year: 2008, country: "Iran", oil: 209.9 }, { year: 2008, country: "Mexico", oil: 157.7 }, { year: 2008, country: "Russia", oil: 488.5 }, { year: 2009, country: "Saudi Arabia", oil: 459.5 }, { year: 2009, country: "USA", oil: 325.3 }, { year: 2009, country: "Iran", oil: 202.4 }, { year: 2009, country: "Mexico", oil: 147.5 }, { year: 2009, country: "Russia", oil: 494.2 } ];