ETOPO1 (*.flt)

ETOPO1 is a 1 arc-minute global relief model (with longnitude and latitude dimensions of 21600 by 10800 grid cells respectively) of the Earth’s surface that integrates land topography and ocean bathymetry.


  • Cadcorp SIS Desktop
  • Cadcorp SIS Desktop Express
  • Cadcorp SIS ActiveX Modeller
  • Cadcorp SIS ActiveX Manager
  • Cadcorp SIS ActiveX Viewer
  • Cadcorp GeognoSIS