Function reference

Data Retrieval Functions

get_tiles()

A user-friendly way to get USGS National Map data tiles for an area

hit_national_map_api()

Hit the USGS 3DEP API and retrieve an elevation heightmap

Data Manipulation Functions

merge_rasters()

Merge multiple raster files into a single raster

georeference_overlay()

Georeference image overlays based on a reference raster

Visualization Functions

geom_spatial_rgb() stat_spatial_rgb()

Plot RGB rasters in ggplot2

raster_to_raw_tiles()

Crop a raster and convert the output tiles into new formats.

make_manifest() transform_elevation() transform_overlay()

Transform rasters and write manifest file for import into Unity

make_unity()

Initialize terrain inside of a Unity project.

vector_to_overlay()

Turn spatial vector data into an image overlay

combine_overlays()

Combine multiple image overlays into a single file

Utility Functions

add_bbox_buffer() set_bbox_side_length()

Add a uniform buffer around a bounding box for geographic coordinates