주요 좌표계 활용 방법 (TM, UTM-K, KATEC)

0. 기본 - 위도경도 좌표계 (WGS84 - EPSG:4326)

 

1. TM좌표계 (ex: http://www.localdata.kr/, data.nsdi.go.kr/dataset)

+proj=tmerc +lat_0=38 +lon_0=127.5 +k=0.9996 +x_0=1000000 +y_0=2000000 +ellps=GRS80 +units=m +no_defs +type=crs

혹은

+proj=tmerc +lat_0=38 +lon_0=127.0028902777778 +k=1 +x_0=200000 +y_0=500000 +ellps=bessel +units=m +no_defs +towgs84=-115.80,474.99,674.11,1.16,-2.31,-1.63,6.43

2. UTM-K (EPSG:5178)

+proj=tmerc +lat_0=38 +lon_0=127.5 +k=0.9996 +x_0=1000000 +y_0=2000000 +ellps=bessel +units=m +no_defs +towgs84=-115.80,474.99,674.11,1.16,-2.31,-1.63,6.43

3. KATEC 카텍좌표계

+proj=tmerc +lat_0=38 +lon_0=128 +k=0.9999 +x_0=400000 +y_0=600000 +ellps=bessel +units=m +no_defs +towgs84=-115.80,474.99,674.11,1.16,-2.31,-1.63,6.43

 

QGIS 활용시 (버전 3.10 기준):

QGIS 좌표계 추가 메뉴

QGIS 좌표계 추가

Python 기준 (활용예시):

import geopandas as gpd
gdf = gpd.read_file("Z_NGII_N3A_G0010000/Z_NGII_N3A_G0010000.shp", encoding="euc-kr")
gdf.crs = "+proj=tmerc +lat_0=38 +lon_0=127.0028902777778 +k=1 +x_0=200000 +y_0=500000 +ellps=bessel +units=m +no_defs +towgs84=-115.80,474.99,674.11,1.16,-2.31,-1.63,6.43"
ngdf = gdf.to_crs("epsg:4326")