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  • Python——将高德坐标(GCJ02)转换为GPS(WGS84)坐标

     1 # 官方API: http://lbs.amap.com/api/webservice/guide/api/convert
     2 # 坐标体系说明:http://lbs.amap.com/faq/top/coordinate/3
     3 # GCJ02->WGS84 Java版本:http://www.cnblogs.com/xinghuangroup/p/5787306.html
     4 # 验证坐标转换正确性的地址:http://www.gpsspg.com/maps.htm
     5 # 以下内容为原创,转载请注明出处。
     6 import xlrd
     7 import xlwt
     8 import math
     9 from xlutils.copy import copy
    10 workbook = xlrd.open_workbook("E:/090000440305.xls")
    11 sheet = workbook.sheet_by_index(0)
    12 locations = sheet.col_values(6)
    13 def GCJ2WGS(location):
    14 # location格式如下:locations[1] = "113.923745,22.530824"
    15     lon = float(location[0:location.find(",")])
    16     lat = float(location[location.find(",") + 1:len(location)])
    17     a = 6378245.0 # 克拉索夫斯基椭球参数长半轴a
    18     ee = 0.00669342162296594323 #克拉索夫斯基椭球参数第一偏心率平方
    19     PI = 3.14159265358979324 # 圆周率
    20     # 以下为转换公式 
    21     x = lon - 105.0
    22     y = lat - 35.0
    23     # 经度
    24     dLon = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * math.sqrt(abs(x));
    25     dLon += (20.0 * math.sin(6.0 * x * PI) + 20.0 * math.sin(2.0 * x * PI)) * 2.0 / 3.0;
    26     dLon += (20.0 * math.sin(x * PI) + 40.0 * math.sin(x / 3.0 * PI)) * 2.0 / 3.0;
    27     dLon += (150.0 * math.sin(x / 12.0 * PI) + 300.0 * math.sin(x / 30.0 * PI)) * 2.0 / 3.0;
    28     #纬度
    29     dLat = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * math.sqrt(abs(x));
    30     dLat += (20.0 * math.sin(6.0 * x * PI) + 20.0 * math.sin(2.0 * x * PI)) * 2.0 / 3.0;
    31     dLat += (20.0 * math.sin(y * PI) + 40.0 * math.sin(y / 3.0 * PI)) * 2.0 / 3.0;
    32     dLat += (160.0 * math.sin(y / 12.0 * PI) + 320 * math.sin(y * PI / 30.0)) * 2.0 / 3.0;
    33     radLat = lat / 180.0 * PI
    34     magic = math.sin(radLat)
    35     magic = 1 - ee * magic * magic
    36     sqrtMagic = math.sqrt(magic)
    37     dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * PI);
    38     dLon = (dLon * 180.0) / (a / sqrtMagic * math.cos(radLat) * PI);
    39     wgsLon = lon - dLon
    40     wgsLat = lat - dLat
    41     return wgsLon,wgsLat
    42 wgsWorkbook = copy(workbook) # CMD下:pip install xlutils,该库可以通过复制一个工作簿实现对已有内容的excel文件的写入。
    43 wgsSheet = wgsWorkbook.get_sheet(0) # 接上。方式为:复制原工作簿,获取工作表,在新表下写入,保存时名称可以与源文件一致。
    44 wgsSheet.write(0,sheet.ncols,"wgsLocation")
    45 for i in range(1,sheet.nrows):     
    46     wgsSheet.write(i,sheet.ncols,str(GCJ2WGS(locations[i])).replace("(","").replace(")","")) # 在新的一列写入转换后的坐标
    47 wgsWorkbook.save("E:/090000440305.xls")
    48 print("Done!")
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  • 原文地址:https://www.cnblogs.com/shadrach/p/7640717.html
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