[JavaScript知识库]vue中使用词云图

在vue中, 查找到有两种方法来实现词云图, 分别是echarts 和 highcharts
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Echarts:

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注意,wordcloud对应的echarts版本有要求:
echarts-wordcloud@2 is for echarts@5 echarts-wordcloud@1 is for echarts@4

需要下载echartsjs 和 wordcloud, 全局注册引用echarts

	npm install echarts@5
	npm install echarts-wordcloud@2

<div class="cloud-wrap">
    <div ref="cloudEl" class="cloud-box"></div>
</div>
<style>
.cloud-wrap {
    width: 100%;
    height: 100%;
}
 .cloud-box {
     width: 100%;
     height: 100%;
 }
</style>
<script>
import wordcloud from 'echarts-wordcloud';
export default {
	data() {
		return {
			words:[{
				id:1,
				content:'name'
			}],
			bgImg:'base64格式, 底色为白色', 
		}
	},
	mounted() {
      this.drawCloud(this.$refs.cloudEl, this.words);
  	},
  	methods:{
	  	drawCloud(wrapEl, data) {
	        // let maskImage = new Image(); //可以根据图片形状生成有形状的词云图
	        // maskImage.src= this.bgImg;
	        let list = this.wordCloudData.map((item) => ({
	            name: item.content,
	            value: item.id
	        }))
	        if(list.length == 0){
	            list = [{name:'无',value:50}]
	        }
	        let myChart = echarts.init(wrapEl);
	        let option = 
	        {
	            tooltip: {
	                show: true,
	            },
	            // backgroundColor:'#fff', // 画布背景色
	            series: [
	            {
	                name: "热词",
	                type: "wordCloud",
	                // maskImage: maskImage, // 图片形状
	                keepAspect: false,
	                sizeRange: [10, 40], //画布范围，如果设置太大会出现少词（溢出屏幕）
	                rotationRange: [0, 0], //数据翻转范围
	                // shape: "circle",
	                // drawOutOfBound: true, // 超出画布的词汇是否隐藏
	                drawOutOfBound: false,
	                color:"#fff",
	                left: "center",
	                top: "center",
	                right: null,
	                bottom: null,
	                // width: "100%",
	                height: "100%",
	                gridSize: 8,
	                textPadding: 10,
	                autoSize: {
	                    enable: true,
	                    minSize: 6,
	                },
	                textStyle: {
	                    normal: {
	                        fontFamily: 'sans-serif',
	                        fontWeight: 'bold',
	                        color:"#333", // 字体颜色
	                        // color: function () { // 字体颜色
	                        //     return 'rgb(' + [
	                        //         Math.round(Math.random() * 160),
	                        //         Math.round(Math.random() * 160),
	                        //         Math.round(Math.random() * 160)
	                        //     ].join(',') + ')';
	                        // },
	                    },
	                    emphasis: {
	                        // focus: 'self',
	                        textStyle:{
	                            shadowBlur: 10,
	                            shadowColor: "#333",
	                        }
	                    },
	                },
	                data: list,
	            },
	            ],
	        };
	        // maskImage.onload = function() {
	            myChart.setOption(option, true)
	        // };
	    },
  	}
}
</script>

无遮罩层的词云图↑

有遮罩层的词云图↑

**

Highcharts

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下载包

npm install highcharts@7.2.1

<div class="cloud-wrap">
    <div id="container" style="width: 100%;height: 100%;"></div>
</div>
<style>
	// 同上
</style>
<script>
import Highcharts from 'highcharts'
export default {
	data() {
		return {
			words:[{
				id:1,
				content:'name'
			}],
		}
	},
	mounted() {
      this.dealData();
  	},
  	methods:{
	    dealData(){
	        let data = this.words.map((item,index) => ({
	            name: item.content,
	            value: item.id,
	            //weight: Math.floor(Math.random()*3+1)
	            //控制加粗,随机数取1~3, 若需要按照接口返回的顺序, 可不随机
	            weight: item.id*100 
	        }))
	        this.drawPic(data)
	    },
	    drawPic(data){
	        Highcharts.chart('container', {
	            //highcharts logo
	            credits: { enabled: false },
	            //导出
	            exporting: { enabled: false },
	            //提示关闭
	            tooltip: { enabled: false },
	            //颜色配置
	            colors:[
	                '#ffffff'
	                // ,'#00c0d7','#2594ce','#de4c85',
	                // '#ff7f46','#ffb310','#e25c52'
	            ],
	            //图形配置
	            chart: {
	                // spacingBottom: 15,
	                // spacingTop: 12,
	                spacingLeft: 5,
	                spacingRight: 5,
	                backgroundColor: "rgba(255, 255, 255,0)",
	            },
	
	            series: [{
	                type: "wordcloud",// 类型
	                data: data,
	                rotation: 90,//字体不旋转
	                maxFontSize: 40,//最大字体
	                minFontSize: 14,//最小字体
	                style: {
	                    fontFamily: "sans-serif",
	                    fontWeight: '500'
	                }
	            }],
	        });
	    },
  	}
}
</script>

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echarts 和 highcharts 都可以在vue中实现词云图. 但是如果使用echarts的话, 需要当前的echarts进行升级或降级才能实现字体多颜色, 而highcharts则不需要. 自定义形状highcharts暂时还没探究, 需要的可以自行查找, 以后有机会的话我也会看看.