Axis in Vue Heatmap chart component
5 Apr 202324 minutes to read
HeatMap consists of two axes namely, X-axis and Y-axis that displays the row headers and column headers to plot the data points respectively. You can define the type, format, and other customizing options for both axes in the HeatMap.
Types
There are three different axis types available in the HeatMap, which defines the data type of the axis labels. You can define the axis type by using the valueType property in the HeatMap.
Category axis
Category axis type is used to represent the string values in axis labels.
<template>
<div id="app">
<ejs-heatmap id="heatmap" :xAxis='xAxis' :yAxis='yAxis' :dataSource='dataSource'></ejs-heatmap>
</div>
</template>
<script>
import Vue from 'vue';
import { HeatMapPlugin, Tooltip, Legend } from '@syncfusion/ej2-vue-heatmap';
Vue.use(HeatMapPlugin);
export default {
data: function() {
return {
dataSource: [
[73, 39, 26, 39, 94, 0],
[93, 58, 53, 38, 26, 68],
[99, 28, 22, 4, 66, 90],
[14, 26, 97, 69, 69, 3],
[7, 46, 47, 47, 88, 6],
[41, 55, 73, 23, 3, 79],
[56, 69, 21, 86, 3, 33],
[45, 7, 53, 81, 95, 79],
[60, 77, 74, 68, 88, 51],
[25, 25, 10, 12, 78, 14],
[25, 56, 55, 58, 12, 82],
[74, 33, 88, 23, 86, 59]
],
xAxis: {
valueType:"Category",
labels: ['Nancy', 'Andrew','Janet', 'Margaret', 'Steven',
'Michael', 'Robert', 'Laura', 'Anne', 'Paul', 'Karin', 'Mario'],
},
yAxis: {
valueType:"Category",
labels: ['Mon', 'Tues', 'Wed', 'Thurs', 'Fri', 'Sat'],
}
}
},
provide:{
heatmap:[Tooltip, Legend]
}
}
</script>
<style>
@import '../node_modules/@syncfusion/ej2-vue-heatmap/styles/material.css';
</style>Numeric axis
Numeric axis type is used to represent the numeric values in axis labels.
<template>
<div id="app">
<ejs-heatmap id="heatmap" :xAxis='xAxis' :yAxis='yAxis' :dataSource='dataSource'></ejs-heatmap>
</div>
</template>
<script>
import Vue from 'vue';
import { HeatMapPlugin, Tooltip, Legend } from '@syncfusion/ej2-vue-heatmap';
Vue.use(HeatMapPlugin);
export default {
data: function() {
return {
dataSource: [
[73, 39, 26, 39, 94, 0],
[93, 58, 53, 38, 26, 68],
[99, 28, 22, 4, 66, 90],
[14, 26, 97, 69, 69, 3],
[7, 46, 47, 47, 88, 6],
[41, 55, 73, 23, 3, 79],
[56, 69, 21, 86, 3, 33],
[45, 7, 53, 81, 95, 79],
[60, 77, 74, 68, 88, 51],
[25, 25, 10, 12, 78, 14],
[25, 56, 55, 58, 12, 82],
[74, 33, 88, 23, 86, 59]
],
xAxis: {
valueType:"Numeric",
minimum: 0,
maximum: 11
},
yAxis: {
valueType:"Numeric",
minimum: 0,
maximum: 5
}
}
},
provide:{
heatmap:[Tooltip, Legend]
}
}
</script>
<style>
@import 'https://ej2.syncfusion.com/vue/documentation/node_modules/@syncfusion/ej2-vue-heatmap/styles/material.css';
</style>Date-time axis
Date-time axis type is used to represent the date-time values in axis labels with a specific format. In date-time axis, you can define the start and end date/time using the minimum and maximum properties.
<template>
<div id="app">
<ejs-heatmap id="heatmap" :titleSettings='titleSettings' :xAxis='xAxis' :yAxis='yAxis' :legendSettings='legendSettings' :cellSettings='cellSettings' :dataSource='dataSource'></ejs-heatmap>
</div>
</template>
<script>
import Vue from 'vue';
import { HeatMapPlugin, Tooltip, Legend } from '@syncfusion/ej2-vue-heatmap';
Vue.use(HeatMapPlugin);
export default {
data: function() {
return {
dataSource: [
[36371, 25675, 28292, 33399, 35980, 38585, 39351, 39964, 36543, 30529, 33298, 36985],
[34702, 27618, 31063, 34525, 36772, 35410, 38750, 39467, 35390, 34196, 35302, 35703],
[34522, 31324, 32128, 34231, 36817, 34381, 37180, 38255, 32776, 32645, 31539, 32981],
[32213, 28755, 29517, 31214, 33747, 33507, 35763, 36837, 32910, 33437, 30659, 31965],
[31282, 28663, 32952, 33941, 34506, 36875, 38836, 35497, 34285, 34094, 32256, 33699],
[31714, 29405, 33745, 32838, 33461, 35034, 36122, 37943, 34128, 30624, 32398, 33522],
[32064, 28387, 33751, 32537, 34034, 35977, 37196, 38301, 33627, 34115, 31072, 33939],
[32417, 27868, 30807, 33386, 35284, 36126, 39753, 40978, 35777, 35277, 31281, 35411],
[32494, 29848, 34385, 35804, 37943, 38722, 41315, 41335, 37177, 37443, 32457, 37304],
[34378, 29576, 30547, 35664, 36622, 38145, 40347, 41868, 38252, 36505, 29576, 36450],
[35219, 31670, 32589, 34927, 36998, 39825, 41126, 42002, 37021, 36583, 32408, 37108]
],
titleSettings: {
text: 'Monthly Flight Traffic at JFK Airport',
textStyle: {
size: '15px',
fontWeight: '500',
fontStyle: 'Normal',
fontFamily: 'Segoe UI'
}
},
xAxis: {
valueType:"DateTime",
minimum: new Date(2007,0,1),
maximum: new Date(2017,0,1),
intervalType:"Years",
labelFormat:"yyyy",
labelRotation: 45,
labelIntersectAction: 'None'
},
yAxis: {
labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May',
'Jun', 'July', 'Aug', 'Sept', 'Oct', 'Nov', 'Dec']
},
legendSettings: {
visible: false,
},
cellSettings: {
showLabel: false,
border: {
width: 0,
},
format: '{value} flights'
}
}
},
provide:{
heatmap:[Tooltip, Legend]
}
}
</script>
<style>
@import 'https://ej2.syncfusion.com/vue/documentation/node_modules/@syncfusion/ej2-vue-heatmap/styles/material.css';
</style>Inversed axis
HeatMap supports inversing the axis origin for both axes, where the axis labels are placed in an inversed manner. You can enable axis inversing by enabling the isInversed property.
<template>
<div id="app">
<ejs-heatmap id="heatmap" :titleSettings='titleSettings' :xAxis='xAxis' :yAxis='yAxis' :legendSettings='legendSettings' :cellSettings='cellSettings' :dataSource='dataSource'></ejs-heatmap>
</div>
</template>
<script>
import Vue from 'vue';
import { HeatMapPlugin, Tooltip, Legend } from '@syncfusion/ej2-vue-heatmap';
Vue.use(HeatMapPlugin);
export default {
data: function() {
return {
dataSource: [
[36371, 25675, 28292, 33399, 35980, 38585, 39351, 39964, 36543, 30529, 33298, 36985],
[34702, 27618, 31063, 34525, 36772, 35410, 38750, 39467, 35390, 34196, 35302, 35703],
[34522, 31324, 32128, 34231, 36817, 34381, 37180, 38255, 32776, 32645, 31539, 32981],
[32213, 28755, 29517, 31214, 33747, 33507, 35763, 36837, 32910, 33437, 30659, 31965],
[31282, 28663, 32952, 33941, 34506, 36875, 38836, 35497, 34285, 34094, 32256, 33699],
[31714, 29405, 33745, 32838, 33461, 35034, 36122, 37943, 34128, 30624, 32398, 33522],
[32064, 28387, 33751, 32537, 34034, 35977, 37196, 38301, 33627, 34115, 31072, 33939],
[32417, 27868, 30807, 33386, 35284, 36126, 39753, 40978, 35777, 35277, 31281, 35411],
[32494, 29848, 34385, 35804, 37943, 38722, 41315, 41335, 37177, 37443, 32457, 37304],
[34378, 29576, 30547, 35664, 36622, 38145, 40347, 41868, 38252, 36505, 29576, 36450],
[35219, 31670, 32589, 34927, 36998, 39825, 41126, 42002, 37021, 36583, 32408, 37108]
],
titleSettings: {
text: 'Monthly Flight Traffic at JFK Airport',
textStyle: {
size: '15px',
fontWeight: '500',
fontStyle: 'Normal',
fontFamily: 'Segoe UI'
}
},
xAxis: {
valueType:"DateTime",
minimum: new Date(2007,0,1),
maximum: new Date(2017,0,1),
intervalType:"Years",
labelFormat:"yyyy",
labelRotation: 45,
labelIntersectAction: 'None',
isInversed:true
},
yAxis: {
labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May',
'Jun', 'July', 'Aug', 'Sept', 'Oct', 'Nov', 'Dec']
},
legendSettings: {
visible: false,
},
cellSettings: {
showLabel: false,
border: {
width: 0,
},
format: '{value} flights'
}
}
},
provide:{
heatmap:[Tooltip, Legend]
}
}
</script>
<style>
@import 'https://ej2.syncfusion.com/vue/documentation/node_modules/@syncfusion/ej2-vue-heatmap/styles/material.css';
</style>Opposed axis
In HeatMap, you can place the axis label in an opposite position of its default axis label position by using the opposedPosition property.
<template>
<div id="app">
<ejs-heatmap id="heatmap" :titleSettings='titleSettings' :xAxis='xAxis' :yAxis='yAxis' :legendSettings='legendSettings' :cellSettings='cellSettings' :dataSource='dataSource'></ejs-heatmap>
</div>
</template>
<script>
import Vue from 'vue';
import { HeatMapPlugin, Tooltip, Legend } from '@syncfusion/ej2-vue-heatmap';
Vue.use(HeatMapPlugin);
export default {
data: function() {
return {
dataSource: [
[36371, 25675, 28292, 33399, 35980, 38585, 39351, 39964, 36543, 30529, 33298, 36985],
[34702, 27618, 31063, 34525, 36772, 35410, 38750, 39467, 35390, 34196, 35302, 35703],
[34522, 31324, 32128, 34231, 36817, 34381, 37180, 38255, 32776, 32645, 31539, 32981],
[32213, 28755, 29517, 31214, 33747, 33507, 35763, 36837, 32910, 33437, 30659, 31965],
[31282, 28663, 32952, 33941, 34506, 36875, 38836, 35497, 34285, 34094, 32256, 33699],
[31714, 29405, 33745, 32838, 33461, 35034, 36122, 37943, 34128, 30624, 32398, 33522],
[32064, 28387, 33751, 32537, 34034, 35977, 37196, 38301, 33627, 34115, 31072, 33939],
[32417, 27868, 30807, 33386, 35284, 36126, 39753, 40978, 35777, 35277, 31281, 35411],
[32494, 29848, 34385, 35804, 37943, 38722, 41315, 41335, 37177, 37443, 32457, 37304],
[34378, 29576, 30547, 35664, 36622, 38145, 40347, 41868, 38252, 36505, 29576, 36450],
[35219, 31670, 32589, 34927, 36998, 39825, 41126, 42002, 37021, 36583, 32408, 37108]
],
titleSettings: {
text: 'Monthly Flight Traffic at JFK Airport',
textStyle: {
size: '15px',
fontWeight: '500',
fontStyle: 'Normal',
fontFamily: 'Segoe UI'
}
},
xAxis: {
valueType:"DateTime",
minimum: new Date(2007,0,1),
maximum: new Date(2017,0,1),
intervalType:"Years",
labelFormat:"yyyy",
labelRotation: 45,
labelIntersectAction: 'None',
opposedPosition:true
},
yAxis: {
labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May',
'Jun', 'July', 'Aug', 'Sept', 'Oct', 'Nov', 'Dec']
},
legendSettings: {
visible: false,
},
cellSettings: {
showLabel: false,
border: {
width: 0,
},
format: '{value} flights'
}
}
},
provide:{
heatmap:[Tooltip, Legend]
}
}
</script>
<style>
@import 'https://ej2.syncfusion.com/vue/documentation/node_modules/@syncfusion/ej2-vue-heatmap/styles/material.css';
</style>Label formatting
HeatMap supports formatting the axis labels by using the labelFormat property. Using this property, you can customize the axis label by global string format (‘P’, ‘C’, etc) or customized format like ‘{value}°C’.
<template>
<div id="app">
<ejs-heatmap id="heatmap" :xAxis='xAxis' :yAxis='yAxis' :legendSettings='legendSettings' :dataSource='dataSource'></ejs-heatmap>
</div>
</template>
<script>
import Vue from 'vue';
import { HeatMapPlugin, Tooltip, Legend } from '@syncfusion/ej2-vue-heatmap';
Vue.use(HeatMapPlugin);
export default {
data: function() {
return {
dataSource: [
[73, 39, 26, 39, 94, 0],
[93, 58, 53, 38, 26, 68],
[99, 28, 22, 4, 66, 90],
[14, 26, 97, 69, 69, 3],
[7, 46, 47, 47, 88, 6],
[41, 55, 73, 23, 3, 79],
[56, 69, 21, 86, 3, 33],
[45, 7, 53, 81, 95, 79],
[60, 77, 74, 68, 88, 51],
[25, 25, 10, 12, 78, 14],
[25, 56, 55, 58, 12, 82],
[74, 33, 88, 23, 86, 59]
],
xAxis: {
valueType:"DateTime",
minimum: new Date(2007,0,1),
intervalType:"Years",
labelFormat:"yyyy"
},
yAxis: {
valueType:"Numeric",
labelFormat:"${value}"
},
legendSettings: {
visible: false,
}
}
},
provide:{
heatmap:[Tooltip, Legend]
}
}
</script>
<style>
@import 'https://ej2.syncfusion.com/vue/documentation/node_modules/@syncfusion/ej2-vue-heatmap/styles/material.css';
</style>Axis intervals
In HeatMap, you can define an interval between the axis labels using the interval property. In date-time axis, you can change the interval mode by using the intervalType property. The date-time axis supports the following interval types:
- Years
- Months
- Days
- Hours
- Minutes
<template>
<div id="app">
<ejs-heatmap id="heatmap" :titleSettings='titleSettings' :xAxis='xAxis' :yAxis='yAxis' :legendSettings='legendSettings' :cellSettings='cellSettings' :dataSource='dataSource'></ejs-heatmap>
</div>
</template>
<script>
import Vue from 'vue';
import { HeatMapPlugin, Tooltip, Legend } from '@syncfusion/ej2-vue-heatmap';
Vue.use(HeatMapPlugin);
export default {
data: function() {
return {
dataSource: [
[36371, 25675, 28292, 33399, 35980, 38585, 39351, 39964, 36543, 30529, 33298, 36985],
[34702, 27618, 31063, 34525, 36772, 35410, 38750, 39467, 35390, 34196, 35302, 35703],
[34522, 31324, 32128, 34231, 36817, 34381, 37180, 38255, 32776, 32645, 31539, 32981],
[32213, 28755, 29517, 31214, 33747, 33507, 35763, 36837, 32910, 33437, 30659, 31965],
[31282, 28663, 32952, 33941, 34506, 36875, 38836, 35497, 34285, 34094, 32256, 33699],
[31714, 29405, 33745, 32838, 33461, 35034, 36122, 37943, 34128, 30624, 32398, 33522],
[32064, 28387, 33751, 32537, 34034, 35977, 37196, 38301, 33627, 34115, 31072, 33939],
[32417, 27868, 30807, 33386, 35284, 36126, 39753, 40978, 35777, 35277, 31281, 35411],
[32494, 29848, 34385, 35804, 37943, 38722, 41315, 41335, 37177, 37443, 32457, 37304],
[34378, 29576, 30547, 35664, 36622, 38145, 40347, 41868, 38252, 36505, 29576, 36450],
[35219, 31670, 32589, 34927, 36998, 39825, 41126, 42002, 37021, 36583, 32408, 37108]
],
titleSettings: {
text: 'Monthly Flight Traffic at JFK Airport',
textStyle: {
size: '15px',
fontWeight: '500',
fontStyle: 'Normal',
fontFamily: 'Segoe UI'
}
},
xAxis: {
valueType:"DateTime",
minimum: new Date(2007,0,1),
maximum: new Date(2017,0,1),
intervalType:"Years",
interval:2,
labelFormat:"yyyy"
},
yAxis: {
labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May',
'Jun', 'July', 'Aug', 'Sept', 'Oct', 'Nov', 'Dec']
},
legendSettings: {
visible: false,
},
cellSettings: {
showLabel: false,
border: {
width: 0,
},
format: '{value} flights'
}
}
},
provide:{
heatmap:[Tooltip, Legend]
}
}
</script>
<style>
@import 'https://ej2.syncfusion.com/vue/documentation/node_modules/@syncfusion/ej2-vue-heatmap/styles/material.css';
</style>Axis label increment
Axis label increment in the HeatMap is used to display the axis labels with regular interval values in numeric and date-time axes. The labels will be displayed with tick gaps when you set the label interval. But, to achieve the same behavior without tick gaps, use the label increment. You can set the axis label increment using the increment property and the default value of this property is 1.
<template>
<div id="app">
<ejs-heatmap id="heatmap" :xAxis='xAxis' :yAxis='yAxis' :dataSource='dataSource'></ejs-heatmap>
</div>
</template>
<script>
import Vue from 'vue';
import { HeatMapPlugin, Tooltip, Legend } from '@syncfusion/ej2-vue-heatmap';
Vue.use(HeatMapPlugin);
export default {
data: function() {
return {
dataSource: [
[73, 39, 26, 39, 94, 0],
[93, 58, 53, 38, 26, 68],
[99, 28, 22, 4, 66, 90],
[14, 26, 97, 69, 69, 3],
[7, 46, 47, 47, 88, 6],
[41, 55, 73, 23, 3, 79],
[56, 69, 21, 86, 3, 33],
[45, 7, 53, 81, 95, 79],
[60, 77, 74, 68, 88, 51],
[25, 25, 10, 12, 78, 14],
[25, 56, 55, 58, 12, 82],
[74, 33, 88, 23, 86, 59]
],
xAxis: {
valueType:"Numeric",
minimum: 0,
increment:2
},
yAxis:{
valueType:"Numeric",
minimum: 0,
increment:3
},
}
},
provide:{
heatmap:[Tooltip, Legend]
}
}
</script>
<style>
@import 'https://ej2.syncfusion.com/vue/documentation/node_modules/@syncfusion/ej2-vue-heatmap/styles/material.css';
</style>Limiting labels in date-time axis
You can display the axis labels at specific time intervals along with the date-time axis using the showLabelOn property. This property supports the following types:
- None: Displays the axis labels based on the
intervalTypeandintervalproperty of the axis. This type is default value of theshowLabelOnproperty. - Years: Displays the axis labels on every year between given date-time range.
- Months: Displays the axis labels on every month between given date-time range.
- Days: Displays the axis labels on every day between given date-time range.
- Minutes: Displays the axis labels on every minute between given date-time range.
<template>
<div id="app">
<ejs-heatmap
id="heatmap"
:titleSettings="titleSettings"
:xAxis="xAxis"
:yAxis="yAxis"
:legendSettings="legendSettings"
:cellSettings="cellSettings"
height="280px"
:paletteSettings="paletteSettings"
:dataSource="dataSource"
:tooltipRender="tooltipRender"
></ejs-heatmap>
</div>
</template>
<script>
import Vue from "vue";
import { HeatMapPlugin, Tooltip, Legend } from "@syncfusion/ej2-vue-heatmap";
import { Internationalization } from "@syncfusion/ej2-base";
Vue.use(HeatMapPlugin);
export default {
data: function() {
return {
dataSource: [
[null, null, null, null, 16, 48, 0],
[0, 15, 0, 24, 0, 39, 0],
[0, 18, 37, 0, 0, 50, 0],
[0, 10, 0, 0, 44, 5, 0],
[0, 36, 0, 45, 20, 18, 0],
[0, 28, 1, 42, 0, 10, 0],
[0, 16, 32, 0, 1, 25, 0],
[0, 31, 2, 9, 24, 0, 0],
[0, 8, 47, 0, 0, 35, 0],
[0, 31, 0, 0, 0, 40, 0],
[0, 8, 0, 27, 0, 35, 0],
[0, 12, 9, 45, 0, 8, 0],
[0, 0, 13, 0, 22, 10, 0],
[0, 16, 32, 0, 1, 25, 0],
[0, 31, 2, 9, 24, 0, 0],
[0, 8, 47, 27, 0, 35, 0],
[0, 28, 14, 10, 0, 0, 0],
[0, 36, 0, 45, 20, 18, 0],
[0, 28, 1, 42, 0, 10, 0],
[0, 31, 0, 24, 0, 40, 0],
[0, 8, 47, 27, 0, 35, 0],
[0, 36, 0, 45, 20, 18, 0],
[0, 28, 1, 42, 0, 10, 0],
[0, 31, 0, 24, 0, 40, 0],
[0, 16, 32, 0, 1, 25, 0],
[0, 31, 2, 9, 24, 0, 0],
[0, 8, 47, 27, 0, 35, 0],
[0, 10, 0, 36, 23, 19, 0],
[0, 18, 37, 23, 0, 50, 0],
[0, 28, 14, 10, 0, 0, 0],
[0, 18, 37, 23, 0, 50, 0],
[0, 18, 37, 23, 0, 50, 0],
[0, 28, 14, 10, 0, 0, 0],
[0, 31, 2, 9, 24, 0, 0],
[0, 8, 47, 27, 0, 35, 0],
[0, 10, 2, 0, 44, 5, 0],
[0, 36, 0, 45, 20, 18, 0],
[0, 28, 1, 42, 0, 10, 0],
[0, 31, 0, 24, 0, 40, 1],
[0, 16, 32, 0, 1, 25, 0],
[0, 31, 2, 9, 24, 0, 0],
[0, 8, 47, 27, 0, 35, 0],
[0, 10, 2, 0, 44, 5, 0],
[0, 12, 9, 45, 0, 8, 0],
[0, 0, 13, 35, 22, 10, 0],
[0, 28, 14, 10, 0, 0, 0],
[0, 36, 0, 45, 20, 18, 2],
[0, 28, 1, 42, 0, 10, 0],
[0, 31, 0, 24, 0, 40, 1],
[0, 8, 47, 27, 0, 35, 0],
[0, 10, 2, 0, 44, 5, 0],
[0, 31, 2, 9, 24, 0, 1],
[0, 8, 47, 27, 0, 35, 40],
[0, 10, 2, 0, 44, 5, null]
],
titleSettings: {
text: "Annual Summary of User Activities in GitLab",
textStyle: {
size: "15px",
fontWeight: "500",
fontStyle: "Normal",
fontFamily: "Segoe UI"
}
},
xAxis: {
opposedPosition: true,
valueType: "DateTime",
minimum: new Date(2017, 6, 23),
maximum: new Date(2018, 6, 30),
intervalType: "Days",
showLabelOn: "Months",
labelFormat: "MMM",
increment: 7
},
yAxis: {
labels: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
isInversed: true
},
cellSettings: {
showLabel: false,
border: {
color: "white"
}
},
paletteSettings: {
palette: [
{ value: 0, color: "rgb(238,238,238)", label: "no contributions" },
{
value: 1,
color: "rgb(172, 213, 242)",
label: "1-15 contributions"
},
{
value: 16,
color: "rgb(127, 168, 201)",
label: "16-31 contributions"
},
{
value: 32,
color: "rgb(82, 123, 160)",
label: "31-49 contributions"
},
{ value: 50, color: "rgb(37, 78, 119)", label: "50+ contributions" }
],
type: "Fixed",
emptyPointColor: "white"
},
showTooltip: true,
legendSettings: {
position: "Bottom",
width: "20%",
alignment: "Near",
showLabel: true,
labelDisplayType: "None",
enableSmartLegend: true
},
tooltipRender: function(args) {
let intl = new Internationalization();
let format = intl.getDateFormat({ format: "EEE MMM dd, yyyy" });
let newDate = new Date(args.xValue);
let date = new Date(newDate.getTime());
let axisLabel = args.heatmap.axisCollections[1].axisLabels;
let index = axisLabel.indexOf(args.yLabel);
date.setDate(date.getDate() + index);
let value = format(date);
args.content = [
(args.value === 0 ? "No" : args.value) +
" " +
"contributions" +
"<br>" +
value
];
}
};
},
provide: {
heatmap: [Tooltip, Legend]
}
};
</script>Multilevel Labels
Multilevel labels are used to classify a group of axis labels as a single category, which is then displayed with a label. By using multiLevelLabels, you can add multiple levels on top of the axis labels.
To divide and group the axis labels, you can use multiLevelLabels property. The starting and ending indexes of the axis labels can be set using the start and end properties in the categories. The text property can be used to specify a name for the grouped axis labels.
The multilevel labels can be customized by using the following properties.
- overflow - It is used to trim or wrap the multilevel labels when the label overflows the intended space. NOTE: This property is only for x-axis.
- alignment - It is used to place and align the multilevel labels.
- maximumTextWidth - It is used to set the maximum width of the text. When the text length exceeds the maximum text width, the overflow action will be performed.
- textStyle - It is used to customize the font style of the multilevel labels.
- border - It is used to customize the border of the multilevel labels displayed in the x-axis and y-axis.
<template>
<div id="app">
<ejs-heatmap id="heatmap" :xAxis='xAxis' :yAxis='yAxis' :dataSource='dataSource'
:titleSettings='titleSettings' :paletteSettings='paletteSettings' :legendSettings='legendSettings'></ejs-heatmap>
</div>
</template>
<script>
import Vue from 'vue';
import { HeatMapPlugin, Tooltip, Legend } from '@syncfusion/ej2-vue-heatmap';
Vue.use(HeatMapPlugin);
export default {
data: function() {
return {
dataSource:[
[52, 65, 67, 45, 37, 52,32, 76, 60, 64, 82, 91],
[68, 52, 63, 51, 30, 51,51, 81, 70, 60, 88, 80],
[60, 50, 42, 53, 66, 70,41, 69, 76, 74, 86, 97],
[66, 64, 46, 40, 47, 41, 45, 76, 83, 69, 92,84],
[65, 42, 58, 32, 36, 44,49, 79, 83, 69, 83, 93],
[54, 46, 61, 46, 40, 39,41, 69, 61, 84, 84, 87],
[48, 46, 61, 47, 49, 41,41, 67, 78, 83, 98, 87],
[69, 52, 41, 44, 41, 52,46, 71, 63, 84, 83, 91],
[50, 59, 44, 43, 27, 42,26, 64, 76, 65, 81, 86],
[47, 49, 66, 53, 50, 34,31, 79, 78, 79, 89, 95],
[61, 40, 62, 26, 34, 54,56, 74, 83, 78, 95, 98]
],
titleSettings: {
text: 'Product wise Monthly sales revenue for a e-commerce website',
textStyle: {
size: '15px',
fontWeight: '500',
fontStyle: 'Normal',
fontFamily: 'Segoe UI'
}
},
xAxis: {
labels: ['Laptop', 'Mobile', 'Gaming', 'Cosmetics', 'Fragnance', 'Watches', 'Handbags', 'Apparels', 'Kitchenware', 'Furniture', 'Home Decor'],
border: { type: 'Rectangle', width:1, color: '#a19d9d' },
multiLevelLabels: [
{
overflow:'Trim',
alignment: 'Near',
textStyle: {
color: 'black',
fontWeight: 'Bold'
},
border: { type: 'Rectangle', color: '#a19d9d' },
categories: [
{ start: 0, end: 2, text: 'Electronics', },
{ start: 3, end: 4, text: 'Beauty and personal care', maximumTextWidth: 50},
{ start: 5, end: 7, text: 'Fashion', },
{ start: 8, end: 10, text: 'Household', }
]
}
]
},
yAxis:{
labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
multiLevelLabels: [
{
border: { type: 'Brace', color: '#a19d9d' },
categories: [
{ start: 0, end: 2, text: 'Q1' },
{ start: 3, end: 5, text: 'Q2' },
{ start: 6, end: 8, text: 'Q3' },
{ start: 9, end: 11, text: 'Q4' }
]
},
{
border: { type: 'Brace', color: '#a19d9d' },
categories: [
{ start: 0, end: 5, text: 'First Half Yearly' },
{
start: 6,
end: 11,
text: 'Second Half Yearly'
}
]
},
{
border: { type: 'Brace', color: '#a19d9d' }
categories: [
{ start: 0, end: 11, text: 'Yearly' }
]
}
]
},
legendSettings: {
visible: false
},
paletteSettings: {
palette: [{ color: '#F0C27B' },
{ color: '#4B1248' }
],
}
}
},
provide:{
heatmap:[Tooltip, Legend]
}
}
</script>
<style>
@import '../node_modules/@syncfusion/ej2-vue-heatmap/styles/material.css';
</style>