echarts-wordcloud

Third-party Wordcloud extension based on wordcloud2.js for Apache ECharts.

Examples

Google Trends

ECharts Option Keywords

Install

<script src="echarts.min.js"></script>
<script src="echarts-wordcloud.min.js"></script>

Or

npm install echarts
npm install echarts-wordcloud

import * as echarts from 'echarts';
import 'echarts-wordcloud';

⚠️ NOTE:

echarts-wordcloud@2 is for echarts@5

echarts-wordcloud@1 is for echarts@4

Usage

var chart = echarts.init(document.getElementById('main'));

chart.setOption({
    ...
    series: [{
        type: 'wordCloud',

        // The shape of the "cloud" to draw. Can be any polar equation represented as a
        // callback function, or a keyword present. Available presents are circle (default),
        // cardioid (apple or heart shape curve, the most known polar equation), diamond (
        // alias of square), triangle-forward, triangle, (alias of triangle-upright, pentagon, and star.

        shape: 'circle',

        // Keep aspect ratio of maskImage or 1:1 for shapes
        // This option is supported since echarts-wordcloud@2.1.0
        keepAspect: false,

        // A silhouette image which the white area will be excluded from drawing texts.
        // The shape option will continue to apply as the shape of the cloud to grow.

        maskImage: maskImage,

        // Folllowing left/top/width/height/right/bottom are used for positioning the word cloud
        // Default to be put in the center and has 75% x 80% size.

        left: 'center',
        top: 'center',
        width: '70%',
        height: '80%',
        right: null,
        bottom: null,

        // Text size range which the value in data will be mapped to.
        // Default to have minimum 12px and maximum 60px size.

        sizeRange: [12, 60],

        // Text rotation range and step in degree. Text will be rotated randomly in range [-90, 90] by rotationStep 45

        rotationRange: [-90, 90],
        rotationStep: 45,

        // size of the grid in pixels for marking the availability of the canvas
        // the larger the grid size, the bigger the gap between words.

        gridSize: 8,

        // set to true to allow word to be drawn partly outside of the canvas.
        // Allow word bigger than the size of the canvas to be drawn
        // This option is supported since echarts-wordcloud@2.1.0
        drawOutOfBound: false,

        // if the font size is too large for the text to be displayed,
        // whether to shrink the text. If it is set to false, the text will
        // not be rendered. If it is set to true, the text will be shrinked.
        // This option is supported since echarts-wordcloud@2.1.0
        shrinkToFit: false,

        // If perform layout animation.
        // NOTE disable it will lead to UI blocking when there is lots of words.
        layoutAnimation: true,

        // Global text style
        textStyle: {
            fontFamily: 'sans-serif',
            fontWeight: 'bold',
            // Color can be a callback function or a color string
            color: function () {
                // Random color
                return 'rgb(' + [
                    Math.round(Math.random() * 160),
                    Math.round(Math.random() * 160),
                    Math.round(Math.random() * 160)
                ].join(',') + ')';
            }
        },
        emphasis: {
            focus: 'self',

            textStyle: {
                textShadowBlur: 10,
                textShadowColor: '#333'
            }
        },

        // Data is an array. Each array item must have name and value property.
        data: [{
            name: 'Farrah Abraham',
            value: 366,
            // Style of single text
            textStyle: {
            }
        }]
    }]
});

Changelog

2.1.0

• [chore] Update Apache ECharts version
• [chore] Sync with the latest wordcloud2.js and use prettier to format the code
• [feature] Add keepAspect option to keep aspect ratio of maskImage or 1:1 for shapes
• [feature] Add drawOutOfBound option to allow words to be drawn partly outside of the canvas
• [feature] Add shrinkToFit option to shrink the text if the font size is too large for the text to be displayed

Notice

The Apache Software Foundation Apache ECharts, ECharts, Apache, the Apache feather, and the Apache ECharts project logo are either registered trademarks or trademarks of the Apache Software Foundation.