Customize Points and Labels
Documentation
This demo shows how you can customize individual points and labels in the Chart.
Feel free to share demo-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
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<template>
<dx-chart
id="chart"
:customize-point="customizePoint"
:customize-label="customizeLabel"
:data-source="dataSource"
title="Daily Temperature in May"
>
<dx-series
argument-field="day"
value-field="value"
type="bar"
color="#e7d19a"
/>
<dx-value-axis :max-value-margin="0.01">
<dx-visual-range :start-value="40"/>
<dx-label :customize-text="customizeText"/>
<dx-constant-line
:width="2"
:value="lowAverage"
color="#8c8cff"
dash-style="dash"
>
<dx-label text="Low Average"/>
</dx-constant-line>
<dx-constant-line
:width="2"
:value="highAverage"
color="#ff7c7c"
dash-style="dash"
>
<dx-label text="High Average"/>
</dx-constant-line>
</dx-value-axis>
<dx-legend :visible="false"/>
<dx-export :enabled="true"/>
</dx-chart>
</template>
<script>
import {
DxChart,
DxSeries,
DxValueAxis,
DxVisualRange,
DxLabel,
DxConstantLine,
DxLegend,
DxExport
} from 'devextreme-vue/chart';
import { temperaturesData } from './data.js';
export default {
components: {
DxChart,
DxSeries,
DxValueAxis,
DxVisualRange,
DxLabel,
DxConstantLine,
DxLegend,
DxExport
},
data() {
return {
highAverage: 77,
lowAverage: 58,
dataSource: temperaturesData
};
},
methods: {
customizePoint(arg) {
if (arg.value > this.highAverage) {
return { color: '#ff7c7c', hoverStyle: { color: '#ff7c7c' } };
} else if (arg.value < this.lowAverage) {
return { color: '#8c8cff', hoverStyle: { color: '#8c8cff' } };
}
},
customizeLabel(arg) {
if (arg.value > this.highAverage) {
return {
visible: true,
backgroundColor: '#ff7c7c',
customizeText: function(e) {
return `${e.valueText }°F`;
}
};
}
},
customizeText(arg) {
return `${arg.valueText }°F`;
}
}
};
</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 temperaturesData = [{
day: '1',
value: 57
}, {
day: '2',
value: 58
}, {
day: '3',
value: 57
}, {
day: '4',
value: 59
}, {
day: '5',
value: 63
}, {
day: '6',
value: 63
}, {
day: '7',
value: 63
}, {
day: '8',
value: 64
}, {
day: '9',
value: 64
}, {
day: '10',
value: 64
}, {
day: '11',
value: 69
}, {
day: '12',
value: 72
}, {
day: '13',
value: 75
}, {
day: '14',
value: 78
}, {
day: '15',
value: 76
}, {
day: '16',
value: 70
}, {
day: '17',
value: 65
}, {
day: '18',
value: 65
}, {
day: '19',
value: 68
}, {
day: '20',
value: 70
}, {
day: '21',
value: 73
}, {
day: '22',
value: 73
}, {
day: '23',
value: 75
}, {
day: '24',
value: 78
}, {
day: '25',
value: 76
}, {
day: '26',
value: 76
}, {
day: '27',
value: 80
}, {
day: '28',
value: 76
}, {
day: '29',
value: 75
}, {
day: '30',
value: 75
}, {
day: '31',
value: 74
}];
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
}
});