# Miscellaneous Functions for Working with 'stars' Rasters

## Documentation for package ‘starsExtra’ version 0.2.8

- DESCRIPTION file.
- User guides, package vignettes and other documentation.
- Package NEWS.

## Help Pages

aspect | Calculate topographic aspect from a DEM
carmel | Digital Elevation Model of Mount Carmel
CI | Calculate the Convergence Index (CI) from a slope raster
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