CI                      Calculate the Convergence Index (CI) from a
                        slope raster
aspect                  Calculate topographic aspect from a DEM
carmel                  Digital Elevation Model of Mount Carmel
dem                     Small Digital Elevation Model
detrend                 Detrend a Digital Elevation Model
flowlength              Calculate flow length
focal2                  Apply a focal filter on a raster
golan                   Digital Elevation Model of Mount Carmel
layer_to_matrix         Get 'stars' layer values as matrix
layer_to_vector         Get 'stars' layer values as vector
matrix_extend           Extend matrix
matrix_get_neighbors    Get neighboring cell values for given matrix
                        cell
matrix_to_stars         Convert 'matrix' to 'stars'
matrix_trim             Trim matrix
slope                   Calculate topographic slope from a DEM
trim                    Remove empty outer rows and columns
w_azimuth               Create matrix with azimuths to center
w_circle                Create matrix with circular weight pattern
