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Python programming skills: How to obtain POI points within the geographical fence based on Baidu Map API
Length: 1500 words
1. Introduction
With the development of mobile Internet, Geographical location information plays an important role in many application scenarios. Baidu Map API provides powerful functions that allow us to obtain nearby POI points according to specific needs. This article will introduce how to use Baidu Map API to obtain POI points within the geofence range, and implement it through Python programming.
2. Preparation
Before starting programming, we need to apply for our own Baidu Map API key. The specific steps are as follows:
3. Coding implementation
import requests import json
def get_poi_within_fence(api_key, fence, query): # 定义API请求的URL url = "http://api.map.baidu.com/place/v2/search" # 发送API请求 response = requests.get(url, params={ "query": query, # 关键字查询 "bounds": fence, # 地理围栏范围 "output": "json", # 返回JSON格式数据 "ak": api_key # 百度地图API密钥 }) # 解析API返回的JSON数据 result = json.loads(response.text) # 获取POI点列表 poi_list = result['results'] return poi_list
In the above code, we obtain POI points within the geofence range by defining a function named get_poi_within_fence
. The function accepts three parameters: api_key
is our Baidu Map API key, fence
is the range of the geofence, and query
is the keyword query.
if __name__ == "__main__": api_key = "your_api_key" # 替换为自己的百度地图API密钥 fence = "39.915,116.404,39.975,116.414" # 地理围栏范围 query = "餐厅" # 关键字查询 poi_list = get_poi_within_fence(api_key, fence, query) for poi in poi_list: print(poi['name'], poi['location'])
In the above code, we first replace api_key
with our own Baidu Map API key, then specify the geofence range and keyword query, and finally Loop through the results and print the name and location of the POI point.
4. Summary
Through the above steps, it becomes very simple to use Baidu Map API in Python to obtain POI points within the geofence range. We only need to define a function and pass in relevant parameters to obtain the POI point information we need. Through this method, we can fully utilize the functions of Baidu Map API in application development and improve the user experience.
5. References
[1] Official documentation of Baidu Map Open Platform. http://lbsyun.baidu.com/
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