Tooltip is used to provide the details of the heatmap cell, and this can be displayed, while hovering the cursor over the cell or performing tap action in touch devices.
You can enable the tooltip by setting the showTooltip property to true and injecting the Tooltip module into the services.
import * as React from "react";
import * as ReactDOM from 'react-dom';
import { HeatMapComponent, Inject, Legend, Tooltip } from '@syncfusion/ej2-react-heatmap';
class App extends React.Component {
constructor() {
super(...arguments);
this.heatmapData = [
[0.72, 0.71, 0.71, 0.67, 0.72, 0.53, 0.53, 0.56, 0.58, 0.56],
[2.28, 2.29, 2.09, 1.84, 1.64, 1.49, 1.49, 1.39, 1.32, 1.23],
[2.02, 2.17, 2.30, 2.39, 2.36, 2.52, 2.62, 2.57, 2.57, 2.74],
[3.21, 3.26, 3.45, 3.47, 3.42, 3.34, 3.14, 2.83, 2.64, 2.61],
[3.22, 3.13, 3.04, 2.95, 2.69, 2.49, 2.27, 2.18, 2.06, 1.87],
[3.30, 3.39, 3.40, 3.48, 3.60, 3.67, 3.73, 3.79, 3.79, 4.07],
[5.80, 5.74, 5.64, 5.44, 5.18, 5.08, 5.07, 5.00, 5.35, 5.47],
[6.91, 7.40, 8.13, 8.80, 9.04, 9.24, 9.43, 9.35, 9.49, 9.69]
];
}
render() {
return (<HeatMapComponent id='heatmap' titleSettings={{
text: 'Crude Oil Production of Non-OPEC Countries (in Million barrels per day)',
textStyle: {
size: '15px',
fontWeight: '500',
fontStyle: 'Normal',
fontFamily: 'Segoe UI'
}
}} xAxis={{
labels: ['Canada', 'China', 'Egypt', 'Mexico', 'Norway', 'Russia', 'UK', 'USA']
}} yAxis={{
labels: ['2000', '2001', '2002', '2003', '2004', '2005', '2006', '2007', '2008', '2009', '2010'],
}} cellSettings={{
showLabel: false,
}} showTooltip={true} dataSource={this.heatmapData}>
<Inject services={[Legend, Tooltip]}/>
</HeatMapComponent>);
}
}
ReactDOM.render(<App />, document.getElementById('heatmap'));import * as React from "react";
import * as ReactDOM from 'react-dom';
import { HeatMapComponent, Inject, Legend, Tooltip } from '@syncfusion/ej2-react-heatmap';
class App extends React.Component {
private heatmapData: any [] = [
[0.72, 0.71, 0.71, 0.67, 0.72, 0.53, 0.53, 0.56, 0.58, 0.56],
[2.28, 2.29, 2.09, 1.84, 1.64, 1.49, 1.49, 1.39, 1.32, 1.23],
[2.02, 2.17, 2.30, 2.39, 2.36, 2.52, 2.62, 2.57, 2.57, 2.74],
[3.21, 3.26, 3.45, 3.47, 3.42, 3.34, 3.14, 2.83, 2.64, 2.61],
[3.22, 3.13, 3.04, 2.95, 2.69, 2.49, 2.27, 2.18, 2.06, 1.87],
[3.30, 3.39, 3.40, 3.48, 3.60, 3.67, 3.73, 3.79, 3.79, 4.07],
[5.80, 5.74, 5.64, 5.44, 5.18, 5.08, 5.07, 5.00, 5.35, 5.47],
[6.91, 7.40, 8.13, 8.80, 9.04, 9.24, 9.43, 9.35, 9.49, 9.69]
];
render() {
return ( <HeatMapComponent id='heatmap'
titleSettings = { {
text: 'Crude Oil Production of Non-OPEC Countries (in Million barrels per day)',
textStyle: {
size: '15px',
fontWeight: '500',
fontStyle: 'Normal',
fontFamily: 'Segoe UI'
}
} }
xAxis = { {
labels: ['Canada', 'China', 'Egypt', 'Mexico', 'Norway', 'Russia', 'UK', 'USA']
} }
yAxis = { {
labels: ['2000', '2001', '2002', '2003', '2004', '2005', '2006', '2007', '2008', '2009', '2010'],
} }
cellSettings = { {
showLabel: false,
} }
showTooltip = { true }
dataSource={this.heatmapData}>
<Inject services={[Legend, Tooltip]} />
</HeatMapComponent> );
}
}
ReactDOM.render(<App />, document.getElementById('heatmap'));In heatmap, you can customize the tooltip using the tooltipRender client side event.
import * as React from "react";
import * as ReactDOM from 'react-dom';
import { HeatMapComponent, Inject, Legend, Tooltip } from '@syncfusion/ej2-react-heatmap';
class App extends React.Component {
constructor() {
super(...arguments);
this.heatmapData = [
[0.72, 0.71, 0.71, 0.67, 0.72, 0.53, 0.53, 0.56, 0.58, 0.56],
[2.28, 2.29, 2.09, 1.84, 1.64, 1.49, 1.49, 1.39, 1.32, 1.23],
[2.02, 2.17, 2.3, 2.39, 2.36, 2.52, 2.62, 2.57, 2.57, 2.74],
[3.21, 3.26, 3.45, 3.47, 3.42, 3.34, 3.14, 2.83, 2.64, 2.61],
[3.22, 3.13, 3.04, 2.95, 2.69, 2.49, 2.27, 2.18, 2.06, 1.87],
[3.3, 3.39, 3.4, 3.48, 3.6, 3.67, 3.73, 3.79, 3.79, 4.07],
[5.8, 5.74, 5.64, 5.44, 5.18, 5.08, 5.07, 5.0, 5.35, 5.47],
[6.91, 7.4, 8.13, 8.8, 9.04, 9.24, 9.43, 9.35, 9.49, 9.69]
];
}
render() {
return (<HeatMapComponent id="heatmap" titleSettings={{
text: 'Crude Oil Production of Non-OPEC Countries (in Million barrels per day)',
textStyle: {
size: '15px',
fontWeight: '500',
fontStyle: 'Normal',
fontFamily: 'Segoe UI'
}
}} xAxis={{
labels: ['Canada', 'China', 'Egypt', 'Mexico', 'Norway', 'Russia', 'UK', 'USA']
}} yAxis={{
labels: [
'2000',
'2001',
'2002',
'2003',
'2004',
'2005',
'2006',
'2007',
'2008',
'2009',
'2010'
]
}} cellSettings={{
showLabel: false
}} showTooltip={true} tooltipRender={this.tooltipTemplate} dataSource={this.heatmapData}>
<Inject services={[Legend, Tooltip]}/>
</HeatMapComponent>);
}
tooltipTemplate(args) {
args.content = [
'In ' +
args.yLabel +
', the ' +
args.xLabel +
' produced ' +
args.value +
' million barrels per day'
];
}
}
ReactDOM.render(<App />, document.getElementById('heatmap'));import * as React from "react";
import * as ReactDOM from 'react-dom';
import { HeatMapComponent, Inject, Legend, Tooltip } from '@syncfusion/ej2-react-heatmap';
class App extends React.Component {
heatmapData: any[] = [
[0.72, 0.71, 0.71, 0.67, 0.72, 0.53, 0.53, 0.56, 0.58, 0.56],
[2.28, 2.29, 2.09, 1.84, 1.64, 1.49, 1.49, 1.39, 1.32, 1.23],
[2.02, 2.17, 2.3, 2.39, 2.36, 2.52, 2.62, 2.57, 2.57, 2.74],
[3.21, 3.26, 3.45, 3.47, 3.42, 3.34, 3.14, 2.83, 2.64, 2.61],
[3.22, 3.13, 3.04, 2.95, 2.69, 2.49, 2.27, 2.18, 2.06, 1.87],
[3.3, 3.39, 3.4, 3.48, 3.6, 3.67, 3.73, 3.79, 3.79, 4.07],
[5.8, 5.74, 5.64, 5.44, 5.18, 5.08, 5.07, 5.0, 5.35, 5.47],
[6.91, 7.4, 8.13, 8.8, 9.04, 9.24, 9.43, 9.35, 9.49, 9.69]
];
render() {
return (
<HeatMapComponent
id="heatmap"
titleSettings={{
text: 'Crude Oil Production of Non-OPEC Countries (in Million barrels per day)',
textStyle: {
size: '15px',
fontWeight: '500',
fontStyle: 'Normal',
fontFamily: 'Segoe UI'
}
}}
xAxis={{
labels: ['Canada', 'China', 'Egypt', 'Mexico', 'Norway', 'Russia', 'UK', 'USA']
}}
yAxis={{
labels: [
'2000',
'2001',
'2002',
'2003',
'2004',
'2005',
'2006',
'2007',
'2008',
'2009',
'2010'
]
}}
cellSettings={{
showLabel: false
}}
showTooltip={true}
tooltipRender={this.tooltipTemplate as any}
dataSource={this.heatmapData}
>
<Inject services={[Legend, Tooltip]} />
</HeatMapComponent>
);
}
tooltipTemplate(args: ITooltipEventArgs): void {
args.content = [
'In ' +
args.yLabel +
', the ' +
args.xLabel +
' produced ' +
args.value +
' million barrels per day'
];
}
}
ReactDOM.render(<App />, document.getElementById('heatmap'));The fill and border properties are used to customize the background color and border of the Tooltip respectively. The textStyle property in the Tooltip is used to customize the font of the tooltip text.
import * as React from "react";
import * as ReactDOM from 'react-dom';
import { HeatMapComponent, Inject, Legend, Tooltip } from '@syncfusion/ej2-react-heatmap';
class App extends React.Component {
constructor() {
super(...arguments);
this.heatmapData = [
[0.72, 0.71, 0.71, 0.67, 0.72, 0.53, 0.53, 0.56, 0.58, 0.56],
[2.28, 2.29, 2.09, 1.84, 1.64, 1.49, 1.49, 1.39, 1.32, 1.23],
[2.02, 2.17, 2.3, 2.39, 2.36, 2.52, 2.62, 2.57, 2.57, 2.74],
[3.21, 3.26, 3.45, 3.47, 3.42, 3.34, 3.14, 2.83, 2.64, 2.61],
[3.22, 3.13, 3.04, 2.95, 2.69, 2.49, 2.27, 2.18, 2.06, 1.87],
[3.3, 3.39, 3.4, 3.48, 3.6, 3.67, 3.73, 3.79, 3.79, 4.07],
[5.8, 5.74, 5.64, 5.44, 5.18, 5.08, 5.07, 5.0, 5.35, 5.47],
[6.91, 7.4, 8.13, 8.8, 9.04, 9.24, 9.43, 9.35, 9.49, 9.69]
];
}
render() {
return (<HeatMapComponent id="heatmap" titleSettings={{
text: 'Crude Oil Production of Non-OPEC Countries (in Million barrels per day)',
textStyle: {
size: '15px',
fontWeight: '500',
fontStyle: 'Normal',
fontFamily: 'Segoe UI'
}
}} xAxis={{
labels: ['Canada', 'China', 'Egypt', 'Mexico', 'Norway', 'Russia', 'UK', 'USA']
}} yAxis={{
labels: [
'2000',
'2001',
'2002',
'2003',
'2004',
'2005',
'2006',
'2007',
'2008',
'2009',
'2010'
]
}} paletteSettings={{
palette: [{ color: '#F0ADCE' }, { color: '#19307B' }]
}} cellSettings={{
showLabel: false
}} tooltipSettings={{
fill: '#696295',
textStyle: {
color: '#FFFFFF',
size: '12px'
},
border: {
width: 2,
color: '#F0C27B'
}
}} showTooltip={true} tooltipRender={this.tooltipTemplate} dataSource={this.heatmapData}>
<Inject services={[Legend, Tooltip]}/>
</HeatMapComponent>);
}
tooltipTemplate(args) {
args.content = [
'In ' +
args.yLabel +
', the ' +
args.xLabel +
' produced ' +
args.value +
' million barrels per day'
];
}
}
ReactDOM.render(<App />, document.getElementById('heatmap'));import * as React from "react";
import * as ReactDOM from 'react-dom';
import { HeatMapComponent, Inject, Legend, Tooltip } from '@syncfusion/ej2-react-heatmap';
class App extends React.Component {
heatmapData: any[] = [
[0.72, 0.71, 0.71, 0.67, 0.72, 0.53, 0.53, 0.56, 0.58, 0.56],
[2.28, 2.29, 2.09, 1.84, 1.64, 1.49, 1.49, 1.39, 1.32, 1.23],
[2.02, 2.17, 2.3, 2.39, 2.36, 2.52, 2.62, 2.57, 2.57, 2.74],
[3.21, 3.26, 3.45, 3.47, 3.42, 3.34, 3.14, 2.83, 2.64, 2.61],
[3.22, 3.13, 3.04, 2.95, 2.69, 2.49, 2.27, 2.18, 2.06, 1.87],
[3.3, 3.39, 3.4, 3.48, 3.6, 3.67, 3.73, 3.79, 3.79, 4.07],
[5.8, 5.74, 5.64, 5.44, 5.18, 5.08, 5.07, 5.0, 5.35, 5.47],
[6.91, 7.4, 8.13, 8.8, 9.04, 9.24, 9.43, 9.35, 9.49, 9.69]
];
render() {
return (
<HeatMapComponent
id="heatmap"
titleSettings={{
text: 'Crude Oil Production of Non-OPEC Countries (in Million barrels per day)',
textStyle: {
size: '15px',
fontWeight: '500',
fontStyle: 'Normal',
fontFamily: 'Segoe UI'
}
}}
xAxis={{
labels: ['Canada', 'China', 'Egypt', 'Mexico', 'Norway', 'Russia', 'UK', 'USA']
}}
yAxis={{
labels: [
'2000',
'2001',
'2002',
'2003',
'2004',
'2005',
'2006',
'2007',
'2008',
'2009',
'2010'
]
}}
paletteSettings={{
palette: [{ color: '#F0ADCE' }, { color: '#19307B' }]
}}
cellSettings={{
showLabel: false
}}
tooltipSettings={{
fill: '#696295',
textStyle: {
color: '#FFFFFF',
size: '12px'
},
border: {
width: 2,
color: '#F0C27B'
}
}}
showTooltip={true}
tooltipRender={this.tooltipTemplate as any}
dataSource={this.heatmapData}
>
<Inject services={[Legend, Tooltip]} />
</HeatMapComponent>
);
}
tooltipTemplate(args: ITooltipEventArgs): void {
args.content = [
'In ' +
args.yLabel +
', the ' +
args.xLabel +
' produced ' +
args.value +
' million barrels per day'
];
}
}
ReactDOM.render(<App />, document.getElementById('heatmap'));Note: To use tooltip feature, we need to inject Tooltip module into the services.