版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/sinat_29675423/article/details/87434839
适用于爬取一个省、市、县、区等各个行政级别的行政区划数据,数据精确到乡镇区
级别。
以湖南省为例:
# -*- coding:utf-8 -*-
import arcpy
import urllib2
import sys
import json
import math
# 申请:高德API的开发者KEY
# 版本要求:ArcGis 10.2 Python 2.7
# 输入:输入省的名称 存储路径 文件名称
# 输出:该省的行政区划的shp 字段 city citycode district adcode
# 获取行政区划范围内的乡镇区划列表 并插入数据
def get_ad(name):
url = "http://restapi.amap.com/v3/config/district?extensions=base&subdistrict=3&key="+key+"&keywords="+name
# extensions说明:all只返回当前查询的district边界坐标点
# subdistrict说明:1表示下一级行政区(到市),2表示下两级行政区(到乡镇区县),3表示下三级行政区(到街道)
try:
req = urllib2.Request(url)
res_data = urllib2.urlopen(req)
res = res_data.read()
data = json.loads(res)
# 返回查询字段的行政区列表
city_list = data['districts'][0]['districts']
for city in city_list:
district_list = city['districts']
districts = {} # 存储district列表
for district in district_list:
districts[district['adcode'].encode('utf-8')] = district['name'].encode('utf-8')
# 添加数据
set_polyline(districts, city['name'].encode('utf-8'), city['citycode'].encode('utf-8'))
except urllib2.HTTPError, e:
if hasattr(e, "code"):
print e.code
if hasattr(e, "reason"):
print e.reason
def get_polyline(adcode):
url = "http://restapi.amap.com/v3/config/district?extensions=all&subdistrict=0&key=" + key
_url = url + "&keywords=" + adcode
try:
req = urllib2.Request(_url)
res_data = urllib2.urlopen(req)
res = res_data.read()
data = json.loads(res)
polyline = data['districts'][0]['polyline']
return polyline
except urllib2.HTTPError, e:
if hasattr(e, "code"):
print e.code
if hasattr(e, "reason"):
print e.reason
def prepare_shp():
fields_long = ['city', 'district']
fields_short = ['citycode', 'adcode']
length_long = 20
length_short = 10
sr = arcpy.SpatialReference(4326)
if arcpy.Exists(file):
arcpy.Delete_management(file)
polygon = arcpy.CreateFeatureclass_management(path, shp_name, 'POLYGON', '', '', '', sr)
print 'create:' + shp_name
for field in fields_long:
arcpy.AddField_management(polygon, field, 'TEXT', '', '', length_long)
print 'add filed:' + field
for field in fields_short:
arcpy.AddField_management(polygon, field, 'TEXT', '', '', length_short)
print 'add filed:' + field
def set_polyline(districts_map, city, citycode):
insert_cursor = arcpy.da.InsertCursor(file, ('SHAPE@', 'city', 'district', 'citycode', 'adcode'))
for adcode in districts_map.keys():
polyline = get_polyline(adcode)
array = arcpy.Array()
for j in polyline.split('|'):
arr = arcpy.Array()
for i in j.split(';'):
pt = arcpy.Point()
pt.X = gcj2wgs(i)[0]
pt.Y = gcj2wgs(i)[1]
arr.append(pt)
array.append(arr)
polygon = arcpy.Polygon(array)
insert_cursor.insertRow((polygon, city, districts_map[adcode], citycode, adcode))
print "data create:" + city
del insert_cursor
# 高德火星坐标系转化为WGS84地理坐标系
def gcj2wgs(loc):
lon = float(loc.split(',')[0])
lat = float(loc.split(',')[1])
a = 6378245.0 # 克拉索夫斯基椭球参数长半轴a
ee = 0.00669342162296594323 # 克拉索夫斯基椭球参数第一偏心率平方
PI = 3.14159265358979324 # 圆周率
# 以下为转换公式
x = lon - 105.0
y = lat - 35.0
# 经度
dLon = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * math.sqrt(abs(x))
dLon += (20.0 * math.sin(6.0 * x * PI) + 20.0 * math.sin(2.0 * x * PI)) * 2.0 / 3.0
dLon += (20.0 * math.sin(x * PI) + 40.0 * math.sin(x / 3.0 * PI)) * 2.0 / 3.0
dLon += (150.0 * math.sin(x / 12.0 * PI) + 300.0 * math.sin(x / 30.0 * PI)) * 2.0 / 3.0
# 纬度
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 * math.sin(y * PI / 30.0)) * 2.0 / 3.0
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);
dLon = (dLon * 180.0) / (a / sqrtMagic * math.cos(radLat) * PI);
wgsLon = lon - dLon
wgsLat = lat - dLat
return wgsLon, wgsLat
reload(sys)
sys.setdefaultencoding('utf-8')
key = "你的KEY"
search_name = "湖南省" # 输入要获取的行政区划名称
path = "C:/ArcgisData/data" //选择一个存储路径
shp_name = search_name + ".shp"
file = path + "/" + shp_name
prepare_shp()
get_ad(search_name)
print "create success"