Sites to raster

• Continuous data:

  Compute elevation map from sites using default parameters. The sites file has only one FP attribute - elevation:

   s.surf.rst mysites elev=dem
  

  Compute elevation and topographic parameters (slope, aspect and curvatures) from a multiattribute site file (7th attribute is elevation), using default parameters

  s.surf.rst chgreendtm elev=elrst20ft.def field=7 slo=slrst20ft.def asp=asprst20ft.def pcu=pcrst20ft.def tcu=tcrst20ft.def
  

  Lower tension and increase smoothing to reduce noise and extract larger features with curvature

  s.surf.rst -t chgreendtm elev=elrst20ft.t50 ten=50 field=7 smo=0.6 slo=slrst20ft.t50 asp=asprst20ft.t50 pcu=pcrst20ft.t50 tcu=tcrst20ft.t50
  

  Note - this is equivalent to running it without -t and tension=30

  Compare the results

  Elevation

  dem defaults dem smoothed dem topogrid

  Curvature

  a) RST defaults, b) RST smoothed, c) Topogrid

  a b c

  See Notes on spatial interpolation for equations and examples of how the function works

  See Notes on Topographic Analysis for examples of slope, aspect and curvature output.

  s.surf.idw
  

  or use R-STATS or GSTAT for geostatistical approaches

  
  

• Discrete data or dense continuous data (LIDAR):

  
   s.to.rast
  
  

r.to.sites


r.random