Raster GIS External tools

Option with submenu on the Raster GIS menu. 

Many of these might not work with arc second DEMs.

• Whitebox
  • Whitebox slope map (Horn)
  • Whitebox Aspect map
  • Whitebox curvature
    • Profile
    • Tangential
    • Minimal
    • Maximal
    • Mean
    • Gaussian
  • Whitebox fill holes
  • Whitebox multiscale roughness
  • Whitebox Pennock Landform Classification (Pennock,D.J., Zebarth,B.J., and De Jong,E., 1987. Landform Classification and Soil Distribution in Hummocky Terrain, Saskatchewan, Canada. Geoderma, 40: 297-315.) on Calculate menu, Ridges/valleys
  • Whitebox Geomorphons
  • Whitebox average normal vector angular deviation
  • Whitebox circular variance of aspect
• GRASS.  These use version 78 of GRASS, which is still what is is OSGEO4W.  Version 82 cannot be easily substituted.
  • Grass Slope (Horn)
  • Grass aspect (Horn)
  • Grass Profile curvature
  • Grass Tangential curvature
  • Add-ons you have to add to GRASS.  There is an option to get these on the File menu with a DEM map open, only with the GIS full version.  Alternatively load them directly in the GRASS GUI. 
    • TPI
    • TRI
    • GRASS  r.roughness.vector; relatively slow
• GDAL
  • GDAL slope and aspect maps (2 methods available each; problems with geographic DEMs)
  • GDAL hillshade (problems with geographic DEMs)
  • GDAL TRI (Wilson, bathymetric)
  • GDAL TRI (Riley, terrestrial)
  • GDAL TPI
  • GDAL roughness  (not the same as the MICRODEM roughness; Roughness is the largest inter-cell difference of a central pixel and its surrounding cell, as defined in Wilson et al (2007, Marine Geodesy 30:3-35).)
  • Contours shapefile:  this will be in the temp directory; save elsewhere before closing the program if you want. 
• SAGA
  • SAGA TRI map
  • SAGA TPI map
  • SAGA VRM map (vector ruggedness)
• Line detection (Hough transform)
• Raster to vector
• RVT grid creation

There are also image analysis external tools

last revised  8/10/2022