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Selection
Documentation
This demo illustrates the use of the pointClick callback function to implement selection in the Chart widget. The selectionMode of the series is set to «allArgumentPoints», which means that when a user selects a point, other points with the same argument also become selected.
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<template>
<DxChart
id="chart"
:data-source="exportData"
:rotated="true"
title="Economy - Export Change"
@point-click="onPointClick"
@legend-click="onLegendClick"
>
<DxCommonSeriesSettings
argument-field="country"
type="bar"
hover-mode="allArgumentPoints"
selection-mode="allArgumentPoints"
>
<DxLabel :visible="true">
<DxFormat
:precision="1"
type="percent"
/>
</DxLabel>
</DxCommonSeriesSettings>
<DxSeries
value-field="year2007"
name="2007 - 2008"
/>
<DxSeries
value-field="year2008"
name="2008 - 2009"
/>
<DxValueAxis>
<DxLabel>
<DxFormat
:precision="1"
type="percent"
/>
</DxLabel>
</DxValueAxis>
<DxLegend
vertical-alignment="bottom"
horizontal-alignment="center"
/>
<DxExport :enabled="true"/>
</DxChart>
</template>
<script>
import DxChart, {
DxCommonSeriesSettings,
DxSeries,
DxLabel,
DxFormat,
DxValueAxis,
DxLegend,
DxExport
} from 'devextreme-vue/chart';
import { exportData } from './data.js';
export default {
components: {
DxChart,
DxCommonSeriesSettings,
DxSeries,
DxLabel,
DxFormat,
DxValueAxis,
DxLegend,
DxExport
},
data() {
return {
exportData
};
},
methods: {
onPointClick({ target: point }) {
point.select();
},
onLegendClick({ target: series }) {
if(series.isVisible()) {
series.hide();
} else {
series.show();
}
}
}
};
</script>
<style>
#chart {
height: 440px;
}
</style>
import { createApp } from 'vue';
import App from './App.vue';
createApp(App).mount('#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/20.2.4/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.4/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">
</div>
</div>
</body>
</html>
export const exportData = [{
country: 'China',
year2007: 0.1732,
year2008: -0.1588
}, {
country: 'Germany',
year2007: 0.0964,
year2008: -0.2231
}, {
country: 'United States',
year2007: 0.1187,
year2008: -0.1878
}, {
country: 'Japan',
year2007: 0.1081,
year2008: -0.2614
}, {
country: 'France',
year2007: 0.1014,
year2008: -0.2222
}, {
country: 'Netherlands',
year2007: 0.1355,
year2008: -0.2015
}];
System.config({
transpiler: 'plugin-babel',
meta: {
'*.vue': {
loader: 'vue-loader'
},
},
paths: {
'npm:': 'https://unpkg.com/'
},
map: {
'vue': 'npm:vue@3.0.0/dist/vue.esm-browser.js',
'vue-loader': 'npm:dx-systemjs-vue-browser@1.0.15/index.js',
'mitt': 'npm:mitt/dist/mitt.umd.js',
'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.25.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@20.2.4',
'devextreme-vue': 'npm:devextreme-vue@20.2.4',
'jszip': 'npm:jszip@3.5.0/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@0.9.7/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.0.5/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@2.0.8/dist/dx-gantt.js',
'preact': 'npm:preact@10.5.7/dist/preact.js',
'preact/hooks': 'npm:preact@10.5.7/hooks/dist/hooks.js',
'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js',
'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js'
},
packages: {
'devextreme-vue': {
main: 'index.js'
},
'devextreme': {
defaultExtension: 'js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js'
}
},
babelOptions: {
sourceMaps: false,
stage0: true
}
});