jonaszhang

@ethan0911 I meet the same problem with you. I used the data from [ftp://topex.ucsd.edu/pub/srtm15_plus/ ](ftp://topex.ucsd.edu/pub/srtm15_plus/) provided by @michaelchin and created the terrain tiles using the script at[http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0150883]( http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0150883)  ....