GIS variable extraction and collation
Currently functions to extract:
- Trail features from OpenStreetMap (OSM)
- Elevation at sites (including standalone download of 25m CDED raster)
- Distance to water
- Distance to trails
- Distance to roads
- Distance to linear features
- Terrain ruggedness (Vector Ruggedness Measure: VRM)
To-Do:
- NDVI
- EVI?