echarts使用dataset数据集创建单轴散点图

dataset创建单轴散点图

由于使用echarts作图时,我很喜欢用dataset作为数据源,但是官方案例中,有没有给出相关示例,于是,在翻阅官方文档相关案例之后,结合官方文档使用dataset的示例,成功使用dataset绘制单轴散点图!

配置项

//配置项 const option = {     title:[],     dataset:[         {             //使用 dimensions:["week","hours","count"], 方式时,             //transform识别不到!                      source:[//原始数据集                 ["week","hours","count"],                 [0, 0, 5], [0, 1, 1], [0, 2, 0], [0, 3, 0],                  [0, 4, 0], [0, 5, 0], [0, 6, 0], [0, 7, 0],                  [0, 8, 0], [0, 9, 0], [0, 10, 0], [0, 11, 2],                  [0, 12, 4], [0, 13, 1], [0, 14, 1], [0, 15, 3],                  [0, 16, 4], [0, 17, 6], [0, 18, 4], [0, 19, 4],                  [0, 20, 3], [0, 21, 3], [0, 22, 2], [0, 23, 5],                  [1, 0, 7], [1, 1, 0], [1, 2, 0], [1, 3, 0],                  [1, 4, 0], [1, 5, 0], [1, 6, 0], [1, 7, 0],                  [1, 8, 0], [1, 9, 0], [1, 10, 5], [1, 11, 2],                  [1, 12, 2], [1, 13, 6], [1, 14, 9], [1, 15, 11],                  [1, 16, 6], [1, 17, 7], [1, 18, 8], [1, 19, 12],                  [1, 20, 5], [1, 21, 5], [1, 22, 7], [1, 23, 2],                  [2, 0, 1], [2, 1, 1], [2, 2, 0], [2, 3, 0],                  [2, 4, 0], [2, 5, 0], [2, 6, 0], [2, 7, 0],                  [2, 8, 0], [2, 9, 0], [2, 10, 3], [2, 11, 2],                  [2, 12, 1], [2, 13, 9], [2, 14, 8], [2, 15, 10],                  [2, 16, 6], [2, 17, 5], [2, 18, 5], [2, 19, 5],                  [2, 20, 7], [2, 21, 4], [2, 22, 2], [2, 23, 4],                  [3, 0, 7], [3, 1, 3], [3, 2, 0], [3, 3, 0],                  [3, 4, 0], [3, 5, 0], [3, 6, 0], [3, 7, 0],                  [3, 8, 1], [3, 9, 0], [3, 10, 5], [3, 11, 4],                  [3, 12, 7], [3, 13, 14], [3, 14, 13], [3, 15, 12],                  [3, 16, 9], [3, 17, 5], [3, 18, 5], [3, 19, 10],                  [3, 20, 6], [3, 21, 4], [3, 22, 4], [3, 23, 1],                  [4, 0, 1], [4, 1, 3], [4, 2, 0], [4, 3, 0],                  [4, 4, 0], [4, 5, 1], [4, 6, 0], [4, 7, 0],                  [4, 8, 0], [4, 9, 2], [4, 10, 4], [4, 11, 4],                  [4, 12, 2], [4, 13, 4], [4, 14, 4], [4, 15, 14],                  [4, 16, 12], [4, 17, 1], [4, 18, 8], [4, 19, 5],                  [4, 20, 3], [4, 21, 7], [4, 22, 3], [4, 23, 0],                  [5, 0, 2], [5, 1, 1], [5, 2, 0], [5, 3, 3],                  [5, 4, 0], [5, 5, 0], [5, 6, 0], [5, 7, 0],                  [5, 8, 2], [5, 9, 0], [5, 10, 4], [5, 11, 1],                  [5, 12, 5], [5, 13, 10], [5, 14, 5], [5, 15, 7],                  [5, 16, 11], [5, 17, 6], [5, 18, 0], [5, 19, 5],                  [5, 20, 3], [5, 21, 4], [5, 22, 2], [5, 23, 0],                  [6, 0, 1], [6, 1, 0], [6, 2, 0], [6, 3, 0],                  [6, 4, 0], [6, 5, 0], [6, 6, 0], [6, 7, 0],                  [6, 8, 0], [6, 9, 0], [6, 10, 1], [6, 11, 0],                  [6, 12, 2], [6, 13, 1], [6, 14, 3], [6, 15, 4],                  [6, 16, 0], [6, 17, 0], [6, 18, 0], [6, 19, 0],                  [6, 20, 1], [6, 21, 2], [6, 22, 2], [6, 23, 6]             ]         },     ],   tooltip: {     formatter:param=>{         return `             week:${week[param.value[0]]}             <br/>hour:${hours[param.value[1]]}             <br />count:${param.value[2]}         `     },          position: 'bottom'   },   singleAxis: [],//单轴配置   series: [] }  //24小时数组 const hours = [     '12a', '1a', '2a', '3a', '4a', '5a', '6a',     '7a', '8a', '9a', '10a', '11a',     '12p', '1p', '2p', '3p', '4p', '5p',     '6p', '7p', '8p', '9p', '10p', '11p' ];  //星期数组 const week = ['Saturday', 'Friday', 'Thursday',     'Wednesday', 'Tuesday', 'Monday', 'Sunday']   for(let index = 0 ; index <7;index++){     option.title.push(         {             top: ((index + 0.5) * 100) / 7 + '%',//标题显示位置             text: week[index]//标题         }     )     //通过transform从dataset.source中获取目标数据     option.dataset.push(         {             transform: {                 type: 'filter',//使用transform过滤器                 //条件:week维度值=index的值                 config: { dimension: 'week', value: index },             }         },     );     option.singleAxis.push(         {             left: 150,             boundaryGap: false,              //使用24小时数组为刻度             type: 'category',             data: hours,              top: (index * 100) / 7 + 5 + '%',             height: 100 / 7 - 10 + '%',             axisLabel: {                 interval: 2,             }         }     );     option.series.push(         {             datasetIndex: index + 1,//使用对应转换好的数据源             singleAxisIndex: index,             coordinateSystem: 'singleAxis',             type: 'scatter',             encode: {                 //数据的第2列和第三列为展示数据                 //transform数据源["hour","count"]无法识别                 single:[1,2]             },             symbolSize: function (dataItem) {                 return dataItem[2] * 4;             }         }     ) }  

效果图

echarts使用dataset数据集创建单轴散点图

官方案例请移步:https://echarts.apache.org/examples/zh/editor.html?c=scatter-single-axis
官方案例效果图:
echarts使用dataset数据集创建单轴散点图

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