| 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 | 
| 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 | 
| 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 | 
| k05ck2 | basic kernels | 
| k1c | basic kernels | 
| k1ck2 | basic kernels | 
| k2c | basic kernels | 
| k2ck2 | basic kernels | 
| k4c | basic kernels | 
| k6c | basic kernels | 
| k8c | basic kernels | 
| KernelCircular | Build a circular moving window | 
| KernelRectangular | Build a rectangular kernel of size X x Y | 
| Madscan | Calculate MAD basic indexes | 
| Meanscan | Calculate less robust geostatistical indexes (mean of absolute differences raised to an exponent) | 
| RRI | RRI: Radial Roughness index | 
| RRI.numeric | RRI: Radial Roughness index | 
| RRI.SpatRaster | RRI: Radial Roughness index | 
| RRIK3 | RRIK3: Radial Roughness index with differences of order 3 | 
| RRIK3.numeric | RRIK3: Radial Roughness index with differences of order 3 | 
| RRIK3.SpatRaster | RRIK3: Radial Roughness index with differences of order 3 | 
| RRIMax | RRIMax: Maximum Radial Roughness index | 
| RRIMax.numeric | RRIMax: Maximum Radial Roughness index | 
| RRIMax.SpatRaster | RRIMax: Maximum Radial Roughness index | 
| RRIMin | RRIMin: Minimum Radial Roughness index | 
| RRIMin.numeric | RRIMin: Minimum Radial Roughness index | 
| RRIMin.SpatRaster | RRIMin: Minimum Radial Roughness index | 
| Trik2 | Improved TRI (with differences of order 2), reducing/removing slope dependence. | 
| Trik2.numeric | Improved TRI (with differences of order 2), reducing/removing slope dependence. | 
| Trik2.SpatRaster | Improved TRI (with differences of order 2), reducing/removing slope dependence. |