proj4.defs("EPSG:3375","+proj=omerc +no_uoff +lat_0=4 +lonc=102.25 +alpha=323.025796466667 +gamma=323.130102361111 +k=0.99984 +x_0=804671 +y_0=0 +ellps=GRS80 +units=m +no_defs +type=crs");