Function reference • starsExtra

All functions
`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
`dist_to_nearest()`	Calculate raster of distances to nearest feature
`extract2()`	Extract raster values by lines or polygons
`flowlength()`	Calculate flow length
`focal2()`	Apply a focal filter on a raster
`focal2r()`	Apply a focal filter on a raster (R)
`footprints()`	Footprints
`golan`	Digital Elevation Model of Golan Heights
`landsat`	RGB image of Mount Carmel
`layer_to_matrix()`	Get `stars` layer values as matrix
`layer_to_vector()`	Get `stars` layer values as vector
`make_grid()`	Make 'stars' grid from 'sf' layer
`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
`mode_value()`	Mode
`normalize_2d()`	Normalize a 2D 'stars' object
`normalize_3d()`	Normalize a 3D 'stars' object
`rgb_to_greyscale()`	Convert RGB to greyscale
`slope()`	Calculate topographic slope from a DEM
`trim2()`	Remove empty outer rows and columns
`w_azimuth()`	Create matrix with azimuths to center
`w_circle()`	Create matrix with circular weight pattern

Reference