option = {
    series: [
        {
            type: 'funnel',
            left: '10%',      // 漏斗图左边距
            top: 60,           // 漏斗图上边距
            width: '80%',      // 漏斗图宽度
            height: '70%',     // 漏斗图高度
            min: 0,            // 数据最小值
            max: 100,          // 数据最大值
            minSize: '0%',     // 最小尺寸
            maxSize: '100%',   // 最大尺寸
            sort: 'descending', // 排序方式，'descending' 表示降序
            gap: 2,            // 漏斗图项之间的间隔
            label: {           // 数据标签
                show: true,
                position: 'inside'  // 标签位置，'inside' 表示标签在漏斗内部
            },
            labelLine: {       // 标签的连接线
                length: 10,
                lineStyle: {
                    width: 1,
                    type: 'solid'
                }
            },
            itemStyle: {       // 漏斗图项的样式
                borderColor: '#fff',
                borderWidth: 1
            },
            emphasis: {        // 高亮样式
                label: {
                    show: true,
                    fontSize: '20',
                    fontWeight: 'bold'
                }
            },
            data: [
                { value: 100, name: 'Step1' },
                { value: 80, name: 'Step2' },
                { value: 60, name: 'Step3' },
                { value: 40, name: 'Step4' },
                { value: 20, name: 'Step5' }
            ]
        }
    ]
};

// 使用刚指定的配置项和数据显示图表。
myChart.setOption(option);