Scale Breaks
Documentation
Scale breaks allow breaking off parts of the axis to improve the readability of a chart with high amplitude values. This example demonstrates auto-calculated scale breaks. You can change the number of breaks, their style or disabled them.
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window.onload = function() {
var lineStyleValue = ko.observable(lineStyles[0]),
breaksCountValue = ko.observable(breaksCount[2]),
autoBreaksEnabledValue = ko.observable(true),
viewModel = {
chartOptions: {
dataSource: dataSource,
series: {
type: "bar",
valueField: "mass",
argumentField: "name"
},
valueAxis: {
visible: true,
autoBreaksEnabled: autoBreaksEnabledValue,
maxAutoBreakCount: breaksCountValue,
breakStyle: {
line: lineStyleValue
}
},
title: "Relative Masses of the Heaviest\n Solar System Objects",
legend: {
visible: false
},
tooltip: {
enabled: true
}
},
breaksCheckBoxOptions: {
text: "Enable Breaks",
value: autoBreaksEnabledValue
},
maxCountSelectBoxOptions: {
items: breaksCount,
value: breaksCountValue,
width: 60
},
lineStyleSelectBoxOptions: {
items: lineStyles,
value: lineStyleValue,
width: 120
}
};
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.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/18.2.7/css/dx.common.css" />
<link rel="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/18.2.7/css/dx.light.css" />
<script src="https://cdn3.devexpress.com/jslib/18.2.7/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" data-bind="dxChart: chartOptions"></div>
<div class="options">
<div class="caption">Options</div>
<div class="option">
<div class="checkbox" data-bind="dxCheckBox: breaksCheckBoxOptions"></div>
</div>
<div class="option center">
<span>Max Count</span>
<div data-bind="dxSelectBox: maxCountSelectBoxOptions"></div>
</div>
<div class="option right">
<span>Style</span>
<div data-bind="dxSelectBox: lineStyleSelectBoxOptions"></div>
</div>
</div>
</div>
</body>
</html>
#chart {
height: 440px;
}
.options {
padding: 20px;
background-color: rgba(191, 191, 191, 0.15);
margin-top: 20px;
}
.caption {
font-size: 18px;
font-weight: 500;
}
.option {
display: inline-block;
margin-right: 70px;
margin-top: 5px;
}
.option > span {
margin: 0 10px 0 0;
}
.checkbox{
margin-top: -4px;
}
.option > .dx-widget {
display: inline-block;
vertical-align: middle;
}
var dataSource = [{
name: "Jupiter",
mass: 318,
}, {
name: "Saturn",
mass: 95,
}, {
name: "Uranus",
mass: 14.6,
}, {
name: "Neptune",
mass: 17.2,
}, {
name: "Earth",
mass: 1,
}, {
name: "Venus",
mass: 0.82,
}, {
name: "Mars",
mass: 0.11,
}, {
name: "Mercury",
mass: 0.06,
}];
var lineStyles = ["waved", "straight"];
var breaksCount = [1, 2, 3, 4];