visualMap: [

                    {

                        top: 20,

                        left: 0,

                        right: null,

                        // 设置文本为红色

                        textStyle: {

                            color: 'yellow'

                        },

                        selectedMode: false,

                        dimension: 3,

                        categories: ['已建', '在建', '拟建'],

                        inRange: {

                            color: ['#62f962', 'yellow', 'red']

                        },

                        outOfRange: {

                            color: 'orange',

                        }

                    }

            ],