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使用esy-osm-pbf中的纬度和经度值在Python中获取给定半径处的设施列表

的方法如下:

  1. 导入必要的库和模块:
代码语言:txt
复制
import osmium
import math
  1. 创建自定义的处理器类,继承自osmium.SimpleHandler:
代码语言:txt
复制
class FacilityHandler(osmium.SimpleHandler):
    def __init__(self, center_lat, center_lon, radius):
        super(FacilityHandler, self).__init__()
        self.facilities = []
        self.center_lat = center_lat
        self.center_lon = center_lon
        self.radius = radius
    
    def way(self, w):
        for tag in w.tags:
            if tag.k == "amenity":
                lat = w.center().lat
                lon = w.center().lon
                distance = self.calculate_distance(lat, lon)
                
                if distance <= self.radius:
                    facility_info = {
                        "name": tag.v,
                        "lat": lat,
                        "lon": lon,
                        "distance": distance
                    }
                    self.facilities.append(facility_info)
                    break
    
    def calculate_distance(self, lat, lon):
        lat1 = math.radians(self.center_lat)
        lon1 = math.radians(self.center_lon)
        lat2 = math.radians(lat)
        lon2 = math.radians(lon)
        
        radius = 6371  # approximate radius of the Earth in kilometers
        
        dlat = lat2 - lat1
        dlon = lon2 - lon1
        
        a = math.sin(dlat/2) * math.sin(dlat/2) + math.cos(lat1) * math.cos(lat2) * math.sin(dlon/2) * math.sin(dlon/2)
        c = 2 * math.atan2(math.sqrt(a), math.sqrt(1-a))
        
        distance = radius * c
        return distance
  1. 定义函数来执行处理操作,并返回设施列表:
代码语言:txt
复制
def get_facilities(center_lat, center_lon, radius, pbf_file_path):
    facility_handler = FacilityHandler(center_lat, center_lon, radius)
    
    # 创建Osmium Reader并使用处理器处理PBF文件
    reader = osmium.io.Reader(pbf_file_path)
    osmium.apply(reader, facility_handler)
    reader.close()
    
    return facility_handler.facilities
  1. 调用函数并打印设施列表:
代码语言:txt
复制
center_lat = 40.7128
center_lon = -74.0060
radius = 10  # 单位:千米
pbf_file_path = "path/to/pbf/file.pbf"

facilities = get_facilities(center_lat, center_lon, radius, pbf_file_path)

for facility in facilities:
    print(facility)

注意:这里的代码示例假设你已经安装了 esy-osm-pbf 和相关的库,并且已经下载了 OpenStreetMap 的 PBF 数据文件。另外,你还需要根据实际情况修改代码中的经纬度、半径和 PBF 文件路径。

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