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>
<dx-chart
id="chart"
:data-source="medalsInfo"
title="France Olympic Medals"
>
<dx-series
value-field="gold"
name="Gold Medals"
color="#ffd700"
/>
<dx-series
value-field="silver"
name="Silver Medals"
color="#c0c0c0"
/>
<dx-common-series-settings
argument-field="year"
type="steparea"
>
<dx-point :visible="true"/>
</dx-common-series-settings>
<dx-argument-axis>
<dx-label format="decimal"/>
</dx-argument-axis>
<dx-legend
vertical-alignment="bottom"
horizontal-alignment="center"
/>
<dx-export :enabled="true"/>
</dx-chart>
</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
},
computed: {
medalsInfo() {
return medalsInfo;
}
}
};
</script>
<style>
#chart {
height: 440px;
width: 100%;
}
</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>
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',
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
}
});