坐标距离

火星坐标系互转

坐标互转方法

TransBigData包提供了GCJ02,BD09,BD09mc,WGS94坐标系互转。

transbigdata.gcj02tobd09(lng, lat)

transbigdata.bd09togcj02(bd_lon, bd_lat)

transbigdata.wgs84togcj02(lng, lat)

transbigdata.gcj02towgs84(lng, lat)

transbigdata.wgs84tobd09(lon, lat)

transbigdata.bd09towgs84(lon, lat)

transbigdata.bd09mctobd09(lon, lat)

坐标互转，基于numpy列运算:

data['Lng'],data['Lat'] = tbd.wgs84tobd09(data['Lng'],data['Lat'])
data['Lng'],data['Lat'] = tbd.wgs84togcj02(data['Lng'],data['Lat'])
data['Lng'],data['Lat'] = tbd.gcj02tobd09(data['Lng'],data['Lat'])
data['Lng'],data['Lat'] = tbd.gcj02towgs84(data['Lng'],data['Lat'])
data['Lng'],data['Lat'] = tbd.bd09togcj02(data['Lng'],data['Lat'])
data['Lng'],data['Lat'] = tbd.bd09towgs84(data['Lng'],data['Lat'])
data['Lng'],data['Lat'] = tbd.bd09mctobd09(data['Lng'],data['Lat'])

对地理要素转换坐标

transbigdata.transform_shape(gdf, method)

输入地理要素的GeoDataFrame，对整体做坐标转换

输入

gdfGeoDataFrame

地理要素

methodfunction

坐标转换函数

输出

gdfGeoDataFrame

转换后结果

#读取线要素
import geopandas as gpd
Centerline = gpd.read_file(r'test_lines.json')
Centerline.plot()

#整体进行坐标转换
import transbigdata as tbd
Centerline_transformed = tbd.transform_shape(Centerline,tbd.bd09towgs84)
Centerline_transformed.plot()

经纬度计算距离

transbigdata.getdistance(lon1, lat1, lon2, lat2)

按经度1，纬度1，经度2，纬度2 （十进制度数）顺序输入起终点经纬度，为DataFrame的列，获取距离（米），基于numpy列运算:

data['distance'] = tbd.getdistance(data['Lng1'],data['Lat1'], data['Lng2'],data['Lat2'])