71uJo1Jj-oL._AC_UF1000,。Terrain Analysis (Elevation, Slope, or Direction) – Plex-Earth。Skyline TerraExplorer 6.1 - Terrain Analysis Tools - YouTube。。41598_2025_88385_Fig11_HTML.png。GISと関連技術を用いた地形分析の唯一の参考書。Title:Terrain Analysis-Principles and ApplicationsEditors: John P. Wilson, John C. GallantPublisher: John Wiley & Sons,inc.