echarts柱图渐变色样式

var option = {
    tooltip: {},
    grid:{
    },
    legend: {
        data:[\'威胁值\'],
        right:\'10%\',
        top:\'5%\',
        textStyle:{
            color:\'#fff\',
        }
    },
    xAxis: {
        data: [\"swc-sdhgq\",\"swc-sdh1q\",\"swc-sdh2gq\",\"swc-sdhg3\",\"swc-sdhg4\",\"swc-sdhg4\",\"swc-sdhg6\",\"swc-sdhg7\",\"swc-sdhg8\",\"swc-sdhgq\",\"swc-sd8\",\"swc-sdhg9\",\"swc-sdhgq\",\"swc-sdh1q\",\"swc-sdh2gq\",\"swc-sdhg3\",\"swc-sdhg4\",\"swc-sdhg4\",\"swc-sdhg6\",\"swc-sdhg7\"],       //横坐标
        axisTick:{
            show:false,
        },
        axisLabel:{
            interval: 0,
            rotate:25,
            textStyle: {
                color:\'#fff\',
            }
        },
        axisLine: {
            lineStyle: {
                type: \'solid\',
                color:\'#fff\',
                width:\'1  \',                                                //坐标线的宽度
                fontSize:14,
            }
        },
    },
    yAxis: {
        splitLine: {
            show: true,
            lineStyle:{
                color: \'#40A1EA\',                                         //网格横线颜色
                width: 1,
                type: \'solid\'
            }
        },
        axisLabel: {
            textStyle: {
                color: \'#fff\',                                             //坐标值得具体的颜色
            }
        },
        axisLine: {
            show:false,
        },
    },
    series: [{
        name: \'威胁值\',
        type: \'bar\',
        barWidth:10,
        data: [90,89,86, 80, 76, 74,78,69,69, 69, 67,65,64,52,49,43,34,32,25,13],        //数据
        itemStyle: {
            normal: {
                color: new echarts.graphic.LinearGradient(
                    0, 0, 0, 1,
                    [
                        {offset: 0, color: \'#06B5D7\'},                   //柱图渐变色
                        {offset: 0.5, color: \'#44C0C1\'},                 //柱图渐变色
                        {offset: 1, color: \'#71C8B1\'},                   //柱图渐变色
                    ]
                )
            },
            emphasis: {
                color: new echarts.graphic.LinearGradient(
                    0, 0, 0, 1,
                    [
                        {offset: 0, color: \'#71C8B1\'},                  //柱图高亮渐变色
                        {offset: 0.7, color: \'#44C0C1\'},                //柱图高亮渐变色
                        {offset: 1, color: \'#06B5D7\'}                   //柱图高亮渐变色
                    ]
                )
            }
        },
    }]
};

结果如下图：