1.地址轉高德座標代碼:request_coord.py
import json
import requests
import coord_trans
"""
根據地址查詢地點
"""
def request_get(url, param, header):
fails = 0
while True:
try:
if fails >= 20:
break
ret = requests.get(url=url, params=param, headers=header, timeout=10)
if ret.status_code == 200:
text = json.loads(ret.text)
else:
continue
except:
fails += 1
print('網絡連接出現問題, 正在嘗試再次請求: ', fails)
else:
break
return text
def request_coords(address):
post_url = "https://restapi.amap.com/v3/place/text"
request_param = {"s": "rsv3",
"children": "",
"key": "8325164e247e15eea68b59e89200988b",
"page": 1,
"offset": 10,
"city": 110000,
"language": "zh_cn",
"platform": "JS",
"logversion": 2.0,
"sdkversion": 1.3,
"appname": "https://lbs.amap.com/console/show/picker",
"csid": "7598AB3B-4BE6-4719-951B-9EDBE6331000",
"keywords": address}
header = {"Accept": "*/*",
"Accept-Encoding": "gzip, deflate, sdch, br",
"Accept-Language": "zh-CN,zh;q=0.8",
"Connection": "keep-alive",
"Cookie": "key=8325164e247e15eea68b59e89200988b; guid=f631-e4a9-c4a0-275d; UM_distinctid=16e68043e7113e-0b9c86ad90cb11-4d045769-1fa400-16e68043e728d",
"Host": "restapi.amap.com",
"Referer": "https://lbs.amap.com/console/show/picker",
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 SE 2.X MetaSr 1.0"}
a = request_get(post_url, request_param, header)
pois = a["pois"]
print(pois[0]["location"])
accurate_coord = str(pois[0]["location"]).split(",")
# 將高德座標轉爲WGS84座標
wgs84_coord = coord_trans.gcj02_to_wgs84(float(accurate_coord[0]), float(accurate_coord[1]))
return wgs84_coord
request_coords("北京市朝陽區奧林匹克森林公園")
2.座標系統轉換代碼:coord_trans.py
"""
座標轉換
"""
import math
x_pi = 3.14159265358979324 * 3000.0 / 180.0
pi = 3.1415926535897932384626 # π
a = 6378245.0 # 長半軸
ee = 0.00669342162296594323 # 偏心率平方
coordinate = []
lng = []
lat = []
converted_lng = []
converted_lat = []
# 火星座標系(GCJ-02)轉百度座標系(BD-09)
# 谷歌、高德——>百度
def gcj02_to_bd09(lng, lat):
z = math.sqrt(lng * lng + lat * lat) + 0.00002 * math.sin(lat * x_pi)
theta = math.atan2(lat, lng) + 0.000003 * math.cos(lng * x_pi)
bd_lng = z * math.cos(theta) + 0.0065
bd_lat = z * math.sin(theta) + 0.006
return [bd_lng, bd_lat]
# 百度座標系(BD-09)轉火星座標系(GCJ-02)
# 百度——>谷歌、高德
def bd09_to_gcj02(bd_lon, bd_lat):
x = bd_lon - 0.0065
y = bd_lat - 0.006
z = math.sqrt(x * x + y * y) - 0.00002 * math.sin(y * x_pi)
theta = math.atan2(y, x) - 0.000003 * math.cos(x * x_pi)
gg_lng = z * math.cos(theta)
gg_lat = z * math.sin(theta)
return [gg_lng, gg_lat]
# WGS84轉GCJ02(火星座標系)
def wgs84_to_gcj02(lng, lat):
# 判斷是否在國內
if out_of_china(lng, lat):
return [lng, lat]
dlat = _transformlat(lng - 105.0, lat - 35.0)
dlng = _transformlng(lng - 105.0, lat - 35.0)
radlat = lat / 180.0 * pi
magic = math.sin(radlat)
magic = 1 - ee * magic * magic
sqrtmagic = math.sqrt(magic)
dlat = (dlat * 180.0) / ((a * (1 - ee)) / (magic * sqrtmagic) * pi)
dlng = (dlng * 180.0) / (a / sqrtmagic * math.cos(radlat) * pi)
mglat = lat + dlat
mglng = lng + dlng
return [mglng, mglat]
# GCJ02(火星座標系)轉GPS84
def gcj02_to_wgs84(lng, lat):
if out_of_china(lng, lat):
return [lng, lat]
dlat = _transformlat(lng - 105.0, lat - 35.0)
dlng = _transformlng(lng - 105.0, lat - 35.0)
radlat = lat / 180.0 * pi
magic = math.sin(radlat)
magic = 1 - ee * magic * magic
sqrtmagic = math.sqrt(magic)
dlat = (dlat * 180.0) / ((a * (1 - ee)) / (magic * sqrtmagic) * pi)
dlng = (dlng * 180.0) / (a / sqrtmagic * math.cos(radlat) * pi)
mglat = lat + dlat
mglng = lng + dlng
return [lng * 2 - mglng, lat * 2 - mglat]
# 百度座標系轉84座標
def bd09_to_wgs84(bd_lon, bd_lat):
lon, lat = bd09_to_gcj02(bd_lon, bd_lat)
return gcj02_to_wgs84(lon, lat)
# 84座標轉百度座標
def wgs84_to_bd09(lon, lat):
lon, lat = wgs84_to_gcj02(lon, lat)
return gcj02_to_bd09(lon, lat)
def _transformlat(lng, lat):
ret = -100.0 + 2.0 * lng + 3.0 * lat + 0.2 * lat * lat + \
0.1 * lng * lat + 0.2 * math.sqrt(math.fabs(lng))
ret += (20.0 * math.sin(6.0 * lng * pi) + 20.0 *
math.sin(2.0 * lng * pi)) * 2.0 / 3.0
ret += (20.0 * math.sin(lat * pi) + 40.0 *
math.sin(lat / 3.0 * pi)) * 2.0 / 3.0
ret += (160.0 * math.sin(lat / 12.0 * pi) + 320 *
math.sin(lat * pi / 30.0)) * 2.0 / 3.0
return ret
def _transformlng(lng, lat):
ret = 300.0 + lng + 2.0 * lat + 0.1 * lng * lng + \
0.1 * lng * lat + 0.1 * math.sqrt(math.fabs(lng))
ret += (20.0 * math.sin(6.0 * lng * pi) + 20.0 *
math.sin(2.0 * lng * pi)) * 2.0 / 3.0
ret += (20.0 * math.sin(lng * pi) + 40.0 *
math.sin(lng / 3.0 * pi)) * 2.0 / 3.0
ret += (150.0 * math.sin(lng / 12.0 * pi) + 300.0 *
math.sin(lng / 30.0 * pi)) * 2.0 / 3.0
return ret
# 判斷是否在國內，不在國內不做偏移
def out_of_china(lng, lat):
return not (lng > 73.66 and lng < 135.05 and lat > 3.86 and lat < 53.55)
