怎么用python连接高德地图API,爬取达州市各区县镇的地理位置信息和各道路之间距离信息,具体代码怎么弄
时间: 2024-09-18 12:14:48 浏览: 65
在Python中,你可以利用高德地图开放平台提供的`geocoding`服务获取地理位置信息,以及通过`distance` API 来计算两个地点之间的距离。首先,你需要注册并申请到高德地图的开发者账号,并获取到对应的API密钥。
以下是一个简单的步骤示例:
1. 安装所需库:
```
pip install requests
```
2. 导入需要的模块:
```python
import requests
import json
```
3. 设置你的API密钥和查询地址:
```python
YOUR_API_KEY = "your_gaode_map_api_key"
districts = ["达川区", "通川区", "宣汉县", ...] # 需要查询的具体行政区划名列表
```
4. 定义函数来获取地理位置信息:
```python
def get_location(api_key, address):
url = f"https://restapi.amap.com/v3/geocode/regeo?key={api_key}&location={address}"
response = requests.get(url)
if response.status_code == 200:
data = json.loads(response.text)
return data["regeocode"]["result"]["location"]
else:
print(f"Error fetching location for {address}: {response.status_code}")
return None
```
5. 计算两地之间的距离:
```python
def calculate_distance(api_key, start, end):
url = f"https://restapi.amap.com/v3/direction/dist?key={api_key}&start={start}&destination={end}"
response = requests.get(url)
if response.status_code == 200:
data = json.loads(response.text)
distance = data["route"][0]["distance"]
return distance
else:
print(f"Error calculating distance between {start} and {end}: {response.status_code}")
return None
```
6. 主程序部分,遍历行政区划,获取位置和计算距离:
```python
for district in districts:
location = get_location(YOUR_API_KEY, district)
if location:
print(f"{district}: {location['lng']}, {location['lat']}")
nearby_district = "相邻行政区划名称"
dist = calculate_distance(YOUR_API_KEY, location["lng"], location["lat"])
if dist is not None:
print(f"Distance to {nearby_district}: {dist} 米")
```
请注意,实际运行此代码之前,确保你已经替换 `YOUR_API_KEY` 为你的实际API密钥,且遵守高德地图的服务条款和使用限制。
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