Learning Objectives Spatial Operations on Rasters
- subsetting with Raster data -terra package
- clipping raster 1 falls within extent of second raster
- masking - logical raster w/ T/F values subsets the other raster
- map algebra - operations that modify or summarize raster cell values with reference to surrounding cells, zones or stat functions that apply to every cell
- Four Sub classes of map algebra
- Local (per cell)
- Focal (neighborhood operations)
- Zonal (surrounding pixel grid - can be irregular size/shape)
- Global (one or several entire rasters)
- Equate the map algebra operations to their vector processing counterparts
- Merging Rasters