#gsj #maptiles #nishiokanagatsu2015 #dem #dempng

gsj

Implementation of Geological Survey of Japan algorithms

2 stable releases

1.0.1 Sep 12, 2020
1.0.0 Sep 8, 2020

#5 in #japan

25 downloads per month
Used in gsi

MIT license

280KB
84 lines

GSJ

Implementation of "Nishioka-Nagatu-2015 method" of "Geological Survey of Japan" (GSJ).

Features

  • Altitude Tile; (ja: 標高タイル)
    • Nishioka-Nagatsu-2015 method (ja: 西岡-長津-2015年法)
      • Decoder
      • Encoder

Examples or Tests

Reference

See also

License

GSI files in tests/ dir

These files are GSI's DEM tile. It's for only to use unit tests, no need essentially.

  1. tests/gsi-dem-z8-x229-y94.png; from https://cyberjapandata.gsi.go.jp/xyz/dem_png/8/229/94.png
  2. tests/gsi-dem-z8-x229-y94.txt; from https://cyberjapandata.gsi.go.jp/xyz/dem/8/229/94.txt

Author

Dependencies

~6MB
~73K SLoC