HeatMap

A lightweight calendar heatmap react component built on SVG, customizable version of GitHub's contribution graph.

View Demo View Github

Install

# Not dependent on uiw.
npm install @uiw/react-heat-map --save
Bash

Basic Usage

Basic usage example, Please pay warning to the time setting.

⚠️ Example: 2016-01-11 -> 2016/01/11, Support Safari

import ReactDOM from 'react-dom';
import HeatMap from '@uiw/react-heat-map';

const value = [
  { date: '2016/01/11', count: 2 },
  { date: '2016/01/12', count: 20 },
  { date: '2016/01/13', count: 10 },
  ...[...Array(17)].map((_, idx) => ({ date: `2016/02/${idx + 10}`, count: idx, content: '' })),
  { date: '2016/04/11', count: 2 },
  { date: '2016/05/01', count: 5 },
  { date: '2016/05/02', count: 5 },
  { date: '2016/05/04', count: 11 },
];

const Demo = () => {
  return (
    <div>
      <HeatMap value={value} startDate={new Date('2016/01/01')} />
    </div>
  )
};
ReactDOM.render(<Demo />, _mount_);
React JSX

Set Color

Set the theme color style.

import ReactDOM from 'react-dom';
import HeatMap from '@uiw/react-heat-map';

const value = [
  { date: '2016/01/11', count:2 },
  { date: '2016/04/12', count:2 },
  { date: '2016/05/01', count:5 },
  { date: '2016/05/02', count:5 },
  { date: '2016/05/03', count:1 },
  { date: '2016/05/04', count:11 },
  { date: '2016/05/08', count:32 },
];

const Demo = () => {
  return (
    <HeatMap
      value={value}
      width={600}
      style={{ color: '#ad001d' }}
      startDate={new Date('2016/01/01')}
      panelColors={{
        0: '#f4decd',
        2: '#e4b293',
        4: '#d48462',
        10: '#c2533a',
        20: '#ad001d',
        30: '#000',
      }}
    />
  )
};
ReactDOM.render(<Demo />, _mount_);
React JSX

Set Rect Style

Set the radius of the rect.

import ReactDOM from 'react-dom';
import HeatMap from '@uiw/react-heat-map';

const value = [
  { date: '2016/01/11', count:2 },
  ...[...Array(17)].map((_, idx) => ({ date: `2016/01/${idx + 10}`, count: idx })),
  ...[...Array(17)].map((_, idx) => ({ date: `2016/02/${idx + 10}`, count: idx })),
  { date: '2016/04/12', count:2 },
  { date: '2016/05/01', count:5 },
  { date: '2016/05/02', count:5 },
  { date: '2016/05/03', count:1 },
  { date: '2016/05/04', count:11 },
  { date: '2016/05/08', count:32 },
];

const Demo = () => {
  const [range, setRange] = useState(5)
  return (
    <div>
      <input type="range" min="0" max="5" step="0.1" value={range} onChange={(e) => setRange(e.target.value)} /> {range}
      <HeatMap
        value={value}
        width={600}
        startDate={new Date('2016/01/01')}
        legendRender={(props) => <rect {...props} y={props.y + 10} rx={range} />}
        rectProps={{
          rx: range
        }}
      />
    </div>
  )
};
ReactDOM.render(<Demo />, _mount_);
React JSX

Tooltip

A simple text popup tip.

import ReactDOM from 'react-dom';
import Tooltip from '@uiw/react-tooltip';
import HeatMap from '@uiw/react-heat-map';

const value = [
  { date: '2016/01/11', count:2 },
  ...[...Array(17)].map((_, idx) => ({ date: `2016/01/${idx + 10}`, count: idx, })),
  ...[...Array(17)].map((_, idx) => ({ date: `2016/02/${idx + 10}`, count: idx, })),
  { date: '2016/04/12', count:2 },
  { date: '2016/05/01', count:5 },
  { date: '2016/05/02', count:5 },
  { date: '2016/05/03', count:1 },
  { date: '2016/05/04', count:11 },
  { date: '2016/05/08', count:32 },
];

const Demo = () => {
  return (
    <HeatMap
      value={value}
      width={600}
      startDate={new Date('2016/01/01')}
      rectRender={(props, data) => {
        // if (!data.count) return <rect {...props} />;
        return (
          <Tooltip key={props.key} placement="top" content={`count: ${data.count || 0}`}>
            <rect {...props} />
          </Tooltip>
        );
      }}
    />
  )
};
ReactDOM.render(<Demo />, _mount_);
React JSX

Show/Hide Legend

import ReactDOM from 'react-dom';
import HeatMap from '@uiw/react-heat-map';

const value = [
  { date: '2016/01/11', count:2 },
  ...[...Array(17)].map((_, idx) => ({ date: `2016/01/${idx + 10}`, count: idx })),
  ...[...Array(17)].map((_, idx) => ({ date: `2016/02/${idx + 10}`, count: idx })),
  { date: '2016/04/12', count:2 },
  { date: '2016/05/01', count:5 },
  { date: '2016/05/02', count:5 },
  { date: '2016/05/03', count:1 },
  { date: '2016/05/04', count:11 },
  { date: '2016/05/08', count:32 },
];

const Demo = () => {
  const [size, setSize] = useState(0)
  return (
    <div>
      <label style={{ userSelect: 'none' }}>
        <input
          type="checkbox"
          checked={size === 0}
          onChange={(e) => setSize(e.target.checked ? 0 : 12)}
        />
        {size === 0 ? ' Hide' : ' Show'} Legend
      </label>
      <HeatMap
        width={600}
        value={value}
        legendCellSize={size}
        startDate={new Date('2016/01/01')}
      />
    </div>
  )
};
ReactDOM.render(<Demo />, _mount_);
React JSX

Selected Rect

import ReactDOM from 'react-dom';
import HeatMap from '@uiw/react-heat-map';

const value = [
  { date: '2016/01/11', count:2 },
  ...[...Array(17)].map((_, idx) => ({ date: `2016/01/${idx + 10}`, count: idx })),
  ...[...Array(17)].map((_, idx) => ({ date: `2016/02/${idx + 10}`, count: idx })),
  { date: '2016/04/12', count:2 },
  { date: '2016/05/01', count:5 },
  { date: '2016/05/02', count:5 },
  { date: '2016/05/03', count:1 },
  { date: '2016/05/04', count:11 },
  { date: '2016/05/08', count:32 },
];

const Demo = () => {
  const [selected, setSelected] = useState('')
  return (
    <div>
      <HeatMap
        width={600}
        value={value}
        startDate={new Date('2016/01/01')}
        rectRender={(props, data) => {
          if (selected !== '') {
            props.opacity = data.date === selected ? 1 : 0.45
          }
          return (
            <rect {...props} onClick={() => {
              setSelected(data.date === selected ? '' : data.date);
            }} />
          );
        }}
      />
    </div>
  )
};
ReactDOM.render(<Demo />, _mount_);
React JSX

Props

Property Description Type Default
value Data to be displayed, required Array []
rectSize Grid size number 11
legendCellSize Size of the legend cells, in pixel. Value equal to 0 hide legend. number 11
startDate Start date Date new Date()
endDate End date Date -
space Interval between grid sizes number 2
rectProps Grid node attribute settings React.SVGProps<SVGRectElement> 2
weekLables Week display string[] ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat']
monthLables Month display string[] ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
panelColors Backgroud color of active colors Record<number, string> { 0: '#EBEDF0', 8: '#7BC96F', 4: '#C6E48B', 12: '#239A3B', 32: '#196127' }
rectRender Single day block re-render <E = SVGRectElement>(data: E & { key: number }, valueItem: HeatMapValue & { date: string, column: number, row: number, index: number }) => React.ReactElement -
legendRender Single legend block re-render (props: React.SVGProps<SVGRectElement>) => React.ReactNode -

Development

development

Runs the project in development mode.

# Step 1, run first, listen to the component compile and output the .js file
# listen for compilation output type .d.ts file
npm run watch
# Step 2, development mode, listen to compile preview website instance
npm run start
Bash

production

Builds the app for production to the build folder.

npm run build
Bash

The build is minified and the filenames include the hashes.
Your app is ready to be deployed!