品牌影响力分析echarts 柱状配置项内容和展示

      option = {
    backgroundColor: '#fff',
    title: {
        text: '品牌影响力分析'
    },
    grid: {
        top: '15%',
        right: '10%',
        left: '10%',
        bottom: '12%'
    },
    xAxis: [{
        type: 'category',
        color: '#59588D',
        data: ['2019Q1', '2019Q2', '2019Q3', '2019Q4'],
        axisLabel: {
            margin: 20,
            color: '#999',
            interval:0,  
            rotate:340, 
            textStyle: {
                fontSize: 18
            },
        },
        axisLine: {
            lineStyle: {
                color: 'rgba(107,107,107,0.37)',
            }
        },
        axisTick: {
            show: false
        },
        splitLine: {
            show: false
        }
    }],
    yAxis: [
        {
        axisLabel: {
            formatter: '{value}%',
            color: '#999',
            textStyle: {
                fontSize: 18
            },
        },
        axisLine: {
            show: true,
            lineStyle: {
                color: 'rgba(107,107,107,0.37)',
            }
        },
        axisTick: {
            show: false
        },
        splitLine: {
           show: false
        }
    }],
    series: [
        {
        type: 'bar',
        data: [40, 80, 20,18],
        barWidth: '50px',
        itemStyle: {
            normal: {
                color: function(params){//展示正值的柱子，负数设为透明
                    let colorArr = params.value > 0?['#FF9A22', '#FFD56E']:['rgba(0,0,0,0)', 'rgba(0,0,0,0)']
                    return new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
                        offset: 0,
                        color: colorArr[0] // 0% 处的颜色
                    }, {
                        offset: 1,
                        color:  colorArr[1]// 100% 处的颜色
                    }], false)
                },
                // barBorderRadius: [30,30,0,0]
            },
        },
        label: {
            normal: {
                show: true,
                fontSize: 18,
                fontWeight: 'bold',
                color: '#333',
                position: 'top',
            }
        }
    }
]
};