Drill-Down Chart
Documentation
This demo shows a drill-down chart with two views. The start view displays a breakdown of population by continents. When you click a bar, the detailed view reveals most populated countries on the selected continent. Data for this view is provided by applying a filter to the original data.
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var DemoApp = angular.module('DemoApp', ['dx']);
DemoApp.controller('DemoController', function DemoController($scope, $element) {
$scope.dataSource = filterData("");
$scope.isFirstLevel = true;
$scope.chartOptions = {
bindingOptions: {
dataSource: "dataSource",
},
title: "The Most Populated Countries by Continents",
series: {
type: "bar"
},
legend: {
visible: false
},
valueAxis: {
showZero: false
},
onPointClick: function (e) {
if ($scope.isFirstLevel) {
$scope.isFirstLevel = false;
removePointerCursor($element);
$scope.dataSource = filterData(e.target.originalArgument);
}
},
customizePoint: function () {
var pointSettings = {
color: colors[Number($scope.isFirstLevel)]
};
if (!$scope.isFirstLevel) {
pointSettings.hoverStyle = {
hatching: "none"
};
}
return pointSettings;
}
};
$scope.buttonOptions = {
text: "Back",
icon: "chevronleft",
bindingOptions: {
visible: "!isFirstLevel"
},
onClick: function () {
if (!$scope.isFirstLevel) {
$scope.isFirstLevel = true;
addPointerCursor($element);
$scope.dataSource = filterData("");
}
}
};
addPointerCursor($element);
});
function filterData(name) {
return data.filter(function (item) {
return item.parentID === name;
});
}
function addPointerCursor(element) {
element.find("#chart").addClass("pointer-on-bars");
}
function removePointerCursor(element) {
element.find("#chart").removeClass("pointer-on-bars");
}
<!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/3.4.1/jquery.min.js"></script>
<script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</script>
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.1.5/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.1.5/css/dx.light.css" />
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.16/angular.min.js"></script>
<script>window.angular || document.write(decodeURIComponent('%3Cscript src="js/angular.min.js"%3E%3C\/script%3E'))</script>
<script src="https://cdn3.devexpress.com/jslib/19.1.5/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" ng-app="DemoApp" ng-controller="DemoController">
<div id="chart" dx-chart="chartOptions"></div>
<div class="button-container">
<div dx-button="buttonOptions"></div>
</div>
</div>
</body>
</html>
#chart {
height: 440px;
width: 100%;
}
#chart.pointer-on-bars .dxc-series rect {
cursor: pointer;
}
.button-container {
text-align: center;
height: 40px;
position: absolute;
top: 7px;
left: 0px;
}
var colors = ["#6babac", "#e55253"];
var data = [
{ arg: "Asia", val: 3007613498, parentID: "" },
{ arg: "North America", val: 493603615, parentID: "" },
{ arg: "Europe", val: 438575293, parentID: "" },
{ arg: "Africa", val: 381331438, parentID: "" },
{ arg: "South America", val: 331126555, parentID: "" },
{ arg: "Nigeria", val: 181562056, parentID: "Africa" },
{ arg: "Egypt", val: 88487396, parentID: "Africa" },
{ arg: "Congo", val: 77433744, parentID: "Africa" },
{ arg: "Morocco", val: 33848242, parentID: "Africa" },
{ arg: "China", val: 1380083000, parentID: "Asia" },
{ arg: "India", val: 1306687000, parentID: "Asia" },
{ arg: "Pakistan", val: 193885498, parentID: "Asia" },
{ arg: "Japan", val: 126958000, parentID: "Asia" },
{ arg: "Russia", val: 146804372, parentID: "Europe" },
{ arg: "Germany", val: 82175684, parentID: "Europe" },
{ arg: "Turkey", val: 79463663, parentID: "Europe" },
{ arg: "France", val: 66736000, parentID: "Europe" },
{ arg: "United Kingdom", val: 63395574, parentID: "Europe" },
{ arg: "United States", val: 325310275, parentID: "North America" },
{ arg: "Mexico", val: 121005815, parentID: "North America" },
{ arg: "Canada", val: 36048521, parentID: "North America" },
{ arg: "Cuba", val: 11239004, parentID: "North America" },
{ arg: "Brazil", val: 205737996, parentID: "South America" },
{ arg: "Colombia", val: 48400388, parentID: "South America" },
{ arg: "Venezuela", val: 30761000, parentID: "South America" },
{ arg: "Peru", val: 28220764, parentID: "South America" },
{ arg: "Chile", val: 18006407, parentID: "South America" }
];