Echart在饼图中央添加文字，legend自定义文字

var carProfile =[
{name: "其他",value: 2
}
];
                myChart2.setOption({
                    legend: {
                        icon: "circle",
                        formatter: function (name) {
                            var target;
                            for (var j = 0; j < carProfile.length; j++) {
                                if (carProfile[j].name === name) {
                                    target = carProfile[j].value
                                }
                            }
                            var arr = [name + "(" + target + "辆)"];
                            return arr

                        }
                    },
                    series: [
                        {
                            
                            data: carProfile,
                            label: {
                                normal: {
                                    show: true,
                                    position:'center',
                                    formatter: '总类型\r\n' + carProfile.length + '种',
                                    textStyle: {
                                        fontSize: 20,
                                        color: '#d0d1d8'
                                    }
                                }
                            }
                        }
                    ]
                });