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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<template>
<div>
<dx-chart
id="chart"
:customize-point="customizePoint"
:class="isFirstLevel ? 'pointer-on-bars' : ''"
:data-source="dataSource"
title="The Most Populated Countries by Continents"
@point-click="onPointClick"
>
<dx-series type="bar"/>
<dx-value-axis :show-zero="false"/>
<dx-legend :visible="false"/>
</dx-chart>
<dx-button
:visible="!isFirstLevel"
class="button-container"
text="Back"
icon="chevronleft"
@click="onButtonClick"
/>
</div>
</template>
<script>
import {
DxChart,
DxSeries,
DxValueAxis,
DxLegend,
} from 'devextreme-vue/chart';
import { DxButton } from 'devextreme-vue/button';
import service from './data.js';
const colors = ['#6babac', '#e55253'];
export default {
components: {
DxChart,
DxSeries,
DxValueAxis,
DxLegend,
DxButton
},
data() {
return {
isFirstLevel: true,
dataSource: service.filterData(''),
};
},
methods: {
customizePoint() {
return {
color: colors[Number(this.isFirstLevel)],
hoverStyle: !this.isFirstLevel ? {
hatching: 'none'
} : {}
};
},
onPointClick(e) {
if (this.isFirstLevel) {
this.isFirstLevel = false;
this.dataSource = service.filterData(e.target.originalArgument);
}
},
onButtonClick() {
if (!this.isFirstLevel) {
this.isFirstLevel = true;
this.dataSource = service.filterData('');
}
}
}
};
</script>
<style>
#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;
}
</style>
import Vue from 'vue';
import App from './App.vue';
new Vue({
el: '#app',
components: { App },
template: '<App/>'
});
<!DOCTYPE html>
<html>
<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" />
<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://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script type="text/javascript" src="config.js"></script>
<script type="text/javascript">
System.import('./index.js');
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app">
<span v-if="false">Loading...</span>
</div>
</div>
</body>
</html>
const 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' }
];
export default {
filterData(name) {
return data.filter(function(item) {
return item.parentID === name;
});
}
};
System.config({
transpiler: 'plugin-babel',
paths: {
'npm:': 'https://unpkg.com/'
},
map: {
vue: 'npm:vue@2.6.3/dist/vue.esm.browser.js',
'vue-loader': 'npm:systemjs-vue-browser@latest/index.js',
'devextreme': 'npm:devextreme@19.1',
'devextreme-vue': 'npm:devextreme-vue@19.1',
jszip: 'npm:jszip@3.1.3/dist/jszip.min.js',
'quill': 'npm:quill@1.3.6/dist/quill.js',
'devexpress-diagram': 'npm:devexpress-diagram',
'plugin-babel': 'npm:systemjs-plugin-babel@0/plugin-babel.js',
'systemjs-babel-build': 'npm:systemjs-plugin-babel@0/systemjs-babel-browser.js'
},
meta: {
'*.vue': {
loader: 'vue-loader'
}
},
packages: {
'devextreme-vue': {
main: 'index.js'
},
'devextreme': {
defaultExtension: 'js'
}
},
babelOptions: {
sourceMaps: false,
stage0: true
}
});