CalcMeans               Calculate the mean of absolute values raised to
                        an exponent found in a search window
CalcMedians             Calculate the median of absolute values found
                        in a search window for each raster in a list
KernelCircular          Build a circular moving window
KernelRectangular       Build a rectangular kernel of size X x Y
Madscan                 Calculate MAD basic indices
MadscanL                Calculate MAD basic indices (version for large
                        files)
Meanscan                Calculate less robust geostatistical indices
                        (mean of absolute differences raised to an
                        exponent)
RRI                     RRI: Radial Roughness index
RRIK3                   RRIK3: Radial Roughness index with differences
                        of order 3
RRIMax                  RRIMax: Maximum Radial Roughness index
RRIMin                  RRIMin: Minimum Radial Roughness index
RRIcore                 RRIcore: RRI using only the four inner second
                        order directional differences of the RRI kernel
RRIk4                   RRIk4: Radial Roughness index with fourth order
                        differences
TRIbi                   TRIbi: TRI with bilinear interpolation along
                        diagonals
Trik2                   Improved TRI (with differences of order 2),
                        reducing/removing slope dependence (for testing
                        purposes)
Trik2.SpatRaster        Improved TRI (with differences of order 2),
                        reducing/removing slope dependence (for testing
                        purposes).
Trik2.numeric           Improved TRI (with differences of order 2),
                        reducing/removing slope dependence (for testing
                        purposes)
anisoDir                Calculate the direction of maximum continuity
                        considering 4 directions
anisoDirL               Calculate the direction of maximum continuity
                        considering 4 directions
anisoR                  Calculate the index of anisotropy considering
                        the spatial variability along 4 directions
anisoRL                 Calculate the index of anisotropy considering
                        the spatial variability along 4 directions
circularDispersionGV    Compute circular variance of aspect (i.e. of
                        the gradient vector)
circularDispersionNV    Compute circular variance of normal vectors to
                        surface
circularEigenNV         Compute circular variance of normal vectors to
                        surface
iqrST                   iqrST: interquartile range in a moving window
k05ck2                  basic kernels
k1c                     basic kernels
k1ck2                   basic kernels
k1ck4                   basic kernels
k2c                     basic kernels
k2ck2                   basic kernels
k4c                     basic kernels
k6c                     basic kernels
k8c                     basic kernels
stdST                   stdST: standard deviation in a moving window
