heatMap 实现网格echarts category配置项内容和展示

      
// 根据值来确定显示的颜色
var checkColor = (val)=>{
    if (val<10) {
        return 'red';
    }
    
    if (val<100) {
         return 'blue';
    }
     
    if (val<1000) {
         return 'green';
    }
    
    return 'yellow';
}

// X轴 值        
var xAxisData = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30];

// Y轴 值
var yAxisData = [0,1,2];

// 网格 值
var seriesData = [];
data1 = xAxisData.map((item)=>{
    const val = (Math.random()*1000).toFixed();
     return {
        value:[item, yAxisData[0], val],
        itemStyle:{
            color:checkColor(val)
        }
    } 
   
});

data2 = xAxisData.map((item)=>{
    let val = (Math.random()*100).toFixed();
     return {
        value:[item, yAxisData[1], val],
        itemStyle:{
            color:checkColor(val)
        }
    } 
    
});

data3 = xAxisData.map((item)=>{
    let val = (Math.random()*10).toFixed()
     return {
        value:[item, yAxisData[2], val],
        itemStyle:{
            color:checkColor(val)
        }
    } 
    
});

seriesData = seriesData.concat(data1).concat(data2).concat(data3)

option = {
    title: {
        text: 'heatMap 实现网格'
    },
    tooltip: {
        position: 'top'
    },
    animation: false,
    grid: {
        height: '10%',
        y: '10%'
    },
    xAxis: {
        show: false,
        type: 'category',
        data: xAxisData,
        splitArea: {
            show: false
        }
    },
    yAxis: {
        show: false,
        type: 'category',
        data: yAxisData,
        splitArea: {
            show: false
        }
    },
    series: [{
        name: 'Card',
        type: 'heatmap',
        data: seriesData
    }]
};