python实现Rtree

简单记录R树的构建，R树可以用来做空间距离检索，相对比较高效。

class PmPoi:
    """
    POI基础数据结构
    """
    src_header = ''  # 源数据的表头

    def __init__(self):
        self.id = ''
        self.name_chn = ''
        self.addr_chn = ''
        self.alias = set()
        self.x = .0
        self.y = .0
        self.aoi_guid = ''
        self.building_guid = ''
        self.poi_type = ''
        self.freq = 1
        self.body = ''
        self.suffix = ''

    def __repr__(self):
        return "PmPoi[%s, %s, %s, %s, %f, %f]" % (self.id, self.aoi_guid, self.name_chn, self.addr_chn, self.x, self.y)
    #实例化    
    @staticmethod
    def build_from_record(record):
        pm_poi = PmPoi()
        try:
            pm_poi.id = record.get('group_id')
            pm_poi.name_chn = record.get('name')