convert_gis_road_coords.py
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#!/usr/bin/env python3
"""
WGS84 → GCJ02（高德坐标系）坐标转换脚本
目标表: garden_gis_road
转换字段: starting_latitude/longitude, end_latitude/longitude, gis_polygon_coords
使用方法:
python3 convert_gis_road_coords.py
前提: pip install pymysql
"""
import pymysql
import math
import re
# ========== 数据库配置 ==========
DB_CONFIG = {
'host': '172.17.16.15',
'port': 3306,
'user': 'root',
'password': 'mysql2025!',
'database': 'urban_ops_agent',
'charset': 'utf8mb4',
}
# ========== WGS84 → GCJ02 算法 ==========
PI = math.pi
A = 6378245.0 # 长半轴
EE = 0.00669342162296594323 # 偏心率平方
def wgs84_to_gcj02(lng, lat):
"""WGS84 转 GCJ02（高德坐标系）"""
if lng < 72.004 or lng > 137.8347 or lat < 0.8293 or lat > 55.8271:
return lng, lat
x, y = lng - 105.0, lat - 35.0
dlat = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * math.sqrt(abs(x))
dlat += (20.0 * math.sin(6.0 * x * PI) + 20.0 * math.sin(2.0 * x * PI)) * 2.0 / 3.0
dlat += (20.0 * math.sin(y * PI) + 40.0 * math.sin(y / 3.0 * PI)) * 2.0 / 3.0
dlat += (160.0 * math.sin(y / 12.0 * PI) + 320.0 * math.sin(y * PI / 30.0)) * 2.0 / 3.0
dlng = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * math.sqrt(abs(x))
dlng += (20.0 * math.sin(6.0 * x * PI) + 20.0 * math.sin(2.0 * x * PI)) * 2.0 / 3.0
dlng += (20.0 * math.sin(x * PI) + 40.0 * math.sin(x / 3.0 * PI)) * 2.0 / 3.0
dlng += (150.0 * math.sin(x / 12.0 * PI) + 300.0 * math.sin(x / 30.0 * PI)) * 2.0 / 3.0
rad_lat = lat / 180.0 * PI
magic = math.sin(rad_lat)
magic = 1 - EE * magic * magic
sqrt_magic = math.sqrt(magic)
dlat = (dlat * 180.0) / ((A * (1 - EE)) / (magic * sqrt_magic) * PI)
dlng = (dlng * 180.0) / (A / sqrt_magic * math.cos(rad_lat) * PI)
return lng + dlng, lat + dlat
def transform_wkt(wkt):
"""转换 WKT 字符串中的所有坐标对（支持 POLYGON / MULTIPOLYGON）"""
if not wkt or not wkt.strip():
return wkt
def convert_pair(m):
nlng, nlat = wgs84_to_gcj02(float(m.group(1)), float(m.group(2)))
return f"{nlng:.6f} {nlat:.6f}"
return re.sub(r'(\d+\.?\d*)\s+(\d+\.?\d*)', convert_pair, wkt)
def main():
conn = pymysql.connect(**DB_CONFIG)
cur = conn.cursor()
# 1. 转换起点/终点坐标（如果有的话）
cur.execute(
"SELECT id, starting_latitude, starting_longitude, end_latitude, end_longitude "
"FROM garden_gis_road "
"WHERE (starting_latitude IS NOT NULL AND starting_latitude != '') "
" OR (end_latitude IS NOT NULL AND end_latitude != '')"
)
rows = cur.fetchall()
updated = 0
for row in rows:
id_, slat, slng, elat, elng = row
updates = []
params = []
if slat and slng and slat.strip():
try:
nlng, nlat = wgs84_to_gcj02(float(slng), float(slat))
updates.append('starting_longitude = %s')
updates.append('starting_latitude = %s')
params.append(str(round(nlng, 6)))
params.append(str(round(nlat, 6)))
except ValueError:
pass
if elat and elng and elat.strip():
try:
nlng, nlat = wgs84_to_gcj02(float(elng), float(elat))
updates.append('end_longitude = %s')
updates.append('end_latitude = %s')
params.append(str(round(nlng, 6)))
params.append(str(round(nlat, 6)))
except ValueError:
pass
if updates:
sql = 'UPDATE garden_gis_road SET ' + ', '.join(updates) + ' WHERE id = %s'
params.append(id_)
cur.execute(sql, params)
updated += 1
conn.commit()
print(f'起点/终点坐标: 转换 {updated} 条')
# 2. 转换围栏坐标
cur.execute(
"SELECT COUNT(*) FROM garden_gis_road "
"WHERE gis_polygon_coords IS NOT NULL AND gis_polygon_coords != ''"
)
total = cur.fetchone()[0]
print(f'围栏坐标记录: {total} 条')
batch_size = 500
updated = 0
for offset in range(0, total, batch_size):
cur.execute(
"SELECT id, gis_polygon_coords FROM garden_gis_road "
"WHERE gis_polygon_coords IS NOT NULL AND gis_polygon_coords != '' "
"LIMIT %s OFFSET %s",
(batch_size, offset)
)
for id_, wkt in cur.fetchall():
new_wkt = transform_wkt(wkt)
if new_wkt != wkt:
cur.execute(
"UPDATE garden_gis_road SET gis_polygon_coords = %s WHERE id = %s",
(new_wkt, id_)
)
updated += 1
conn.commit()
print(f' 进度: {min(offset + batch_size, total)}/{total}, 已更新: {updated}')
print(f'围栏坐标: 转换 {updated} 条')
# 3. 验证
cur.execute(
"SELECT COUNT(*) FROM garden_gis_road "
"WHERE gis_polygon_coords IS NOT NULL AND gis_polygon_coords != ''"
)
total = cur.fetchone()[0]
unconverted = 0
cur.execute(
"SELECT id, gis_polygon_coords FROM garden_gis_road "
"WHERE gis_polygon_coords IS NOT NULL AND gis_polygon_coords != ''"
)
for id_, wkt in cur.fetchall():
m = re.search(r'(\d+\.?\d*)\s+(\d+\.?\d*)', wkt)
if m:
wlng, wlat = float(m.group(1)), float(m.group(2))
nlng, nlat = wgs84_to_gcj02(wlng, wlat)
if abs(wlng - nlng) < 0.00001:
unconverted += 1
print(f'\n验证: {unconverted}/{total} 条未转换')
if unconverted == 0:
print('所有坐标已成功转换为 GCJ02（高德坐标系）')
cur.close()
conn.close()
if __name__ == '__main__':
main()