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    Charts

    Discrete Axis Zooming and Panning

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    Discrete data support is one of many strengths of the Chart component. In this example, you can zoom data in the Chart using another DevExtreme JavaScript UI component, the RangeSelector.

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    window.onload = function() { var viewModel = { chartOptions: { palette: "soft", title:"The Chemical Composition of the Earth Layers", valueAxis: { label:{ customizeText: function() { return this.valueText + "%"; } } }, dataSource: dataSource, series: series, commonSeriesSettings: { type: "bar", ignoreEmptyPoints: true }, legend: { border: { visible: true }, visible: true, verticalAlignment: "top", horizontalAlignment: "right", orientation:"horizontal" } }, rangeOptions: { size: { height: 120 }, margin: { left: 10 }, scale: { minorTickCount: 1 }, dataSource: dataSource, chart: { palette: "soft", commonSeriesSettings: { type: "bar", ignoreEmptyPoints: true }, series: series }, behavior: { callValueChanged: "onMoving" }, onValueChanged: function (e) { var zoomedChart = $("#chart-demo #zoomedChart").dxChart("instance"); zoomedChart.getArgumentAxis().visualRange(e.value); } } }; 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/20.2.7/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.7/css/dx.light.css" /> <script src="https://cdn3.devexpress.com/jslib/20.2.7/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="zoomedChart" data-bind="dxChart: chartOptions"></div> <div data-bind="dxRangeSelector: rangeOptions"></div> </div> </div> </body> </html>
    #zoomedChart { margin-bottom: 20px; }
    var series = [{ name: "Si", valueField: "Si" }, { name: "Fe", valueField: "Fe" }, { name: "Ni", valueField: "Ni" }, { name: "S", valueField: "S" }, { name: "O", valueField: "O" }, { name: "Mg", valueField: "Mg" }, { name: "Al", valueField: "Al" }, { name: "K", valueField: "K" }, { name: "Na", valueField: "Na" }]; var dataSource = [{ arg: "Inner Core", Si: 7.35, Fe: 79.39, Ni: 5.2, S: 2.3, O: 4.1 }, { arg: "Outer Core", Si: 7.33, Fe: 78.56, Ni: 5.2, S: 2.7, O: 4.2 }, { arg: "Lower Mantle", Si: 21.5, Fe: 5.8, O: 44.8, Mg: 22.8, Al: 2.2, Ca: 2.3, Na: 0.3, K: 0.03 }, { arg: "Upper Mantle", Si: 28.1, Mg: 23.2, Fe: 4.3, Al: 1.2, Ca: 2.2, O: 40.3, Na: 0.2 }, { arg: "Lower Crust", O: 46.6, Si: 27.7, Al: 8.1, Fe: 5, Ca: 3.6, Na: 2.8, K: 2.6, Mg: 1.5 }, { arg: "Upper Crust", O: 47, Si: 29.5, Al: 8.05, Fe: 4.66, Ca: 2.96, Na: 2.5, K: 2.5, Mg: 1.87 }];