Geospatial filtering algorithms
Author Deltares
7 Stars
Updated Last
1 Year Ago
Started In
May 2019

CI Codecov


Geospatial operations, cost and filtering algorithms as used in for elevation rasters.


  • Terrain filters, such as Progressive Morphological Filters (PMF, SMF) and Skewness balancing
  • Geospatial cost (friction) operations that mimic PCRaster. These functions should however be more Julian, extensible and scale better.
  • Visualization, such as Perceptually Shaded Slope Map (PSSM)
  • Terrain analysis functions, such as slope, aspect, roughness, Topographic Position Index (TPI), Terrain Ruggedness Index (TRI), curvature and hillslope.


The package can be installed with the Julia package manager. From the Julia REPL, type ] to enter the Pkg REPL mode and run:

pkg> add GeoArrayOps