proj4.defs("EPSG:4392","+proj=cass +lat_0=3.71097222222222 +lon_0=102.436177777778 +x_0=0 +y_0=0 +ellps=evrst48 +towgs84=-11,851,5,0,0,0,0 +units=m +no_defs +type=crs");