Step Area with Gaps
Documentation
This demo illustrates how the Chart widget treats points with null value.
www.nytimes.com
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<template>
<DxChart
id="chart"
:data-source="medalsInfo"
title="France Olympic Medals"
>
<DxSeries
value-field="gold"
name="Gold Medals"
color="#ffd700"
/>
<DxSeries
value-field="silver"
name="Silver Medals"
color="#c0c0c0"
/>
<DxCommonSeriesSettings
argument-field="year"
type="steparea"
>
<DxPoint :visible="true"/>
</DxCommonSeriesSettings>
<DxArgumentAxis>
<DxLabel format="decimal"/>
</DxArgumentAxis>
<DxLegend
vertical-alignment="bottom"
horizontal-alignment="center"
/>
<DxExport :enabled="true"/>
</DxChart>
</template>
<script>
import DxChart, {
DxArgumentAxis,
DxLabel,
DxLegend,
DxSeries,
DxCommonSeriesSettings,
DxExport,
DxPoint
} from 'devextreme-vue/chart';
import { medalsInfo } from './data.js';
export default {
components: {
DxChart,
DxArgumentAxis,
DxLabel,
DxLegend,
DxSeries,
DxCommonSeriesSettings,
DxExport,
DxPoint
},
data() {
return {
medalsInfo
};
}
};
</script>
<style>
#chart {
height: 440px;
width: 100%;
}
</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/20.2.3/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.3/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 medalsInfo = [{
year: 1904,
gold: null,
silver: null
}, {
year: 1908,
gold: 5,
silver: 5
}, {
year: 1912,
gold: 7,
silver: 4
}, {
year: 1916,
gold: null,
silver: null
}, {
year: 1920,
gold: 9,
silver: 19
}, {
year: 1924,
gold: 13,
silver: 15
}, {
year: 1928,
gold: 6,
silver: 10
}, {
year: 1932,
gold: 10,
silver: 5
}, {
year: 1936,
gold: 7,
silver: 6
}, {
year: 1940,
gold: null,
silver: null
}, {
year: 1944,
gold: null,
silver: null
}, {
year: 1948,
gold: 10,
silver: 6
}, {
year: 1952,
gold: 6,
silver: 6
}, {
year: 1956,
gold: 4,
silver: 4
}, {
year: 1960,
gold: null,
silver: 2
}, {
year: 1964,
gold: 1,
silver: 8
}, {
year: 1968,
gold: 7,
silver: 3
}, {
year: 1972,
gold: 2,
silver: 4
}, {
year: 1976,
gold: 2,
silver: 3
}, {
year: 1980,
gold: 6,
silver: 5
}, {
year: 1984,
gold: 5,
silver: 7
}, {
year: 1988,
gold: 6,
silver: 4
}, {
year: 1992,
gold: 8,
silver: 5
}, {
year: 1996,
gold: 15,
silver: 7
}, {
year: 2000,
gold: 13,
silver: 14
}, {
year: 2004,
gold: 11,
silver: 9
}, {
year: 2008,
gold: 7,
silver: 16
}];
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@20.2.3',
'devextreme-vue': 'npm:devextreme-vue@20.2.3',
'jszip': 'npm:jszip@3.5.0/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@0.9.5/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.0.0/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@2.0.0/dist/dx-gantt.js',
'preact': 'npm:preact@10.5.5/dist/preact.js',
'preact/hooks': 'npm:preact@10.5.5/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
}
});