I have couple of questions

  • how to obtain digital elevation data in ascii format
  • how to covert the above data obtained from usgs website or any other (in format like tif etc) into ascii format for free. arcgis is commonly recommended but its not free software.
  • can we obtain the above data of earlier time and the recent time differently for the purpose of comparision of topography change after any geological event.
  • Similar questions and discussions