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Load Massif Demo Spatial Layers

Source: R/data-massif_demo_layers.R
massif_demo_layers.Rd

Convenience function to load all spatial layers associated with the massif_demo_units dataset.

Usage

massif_demo_layers()

Value

A nemeton_layers object containing:

rasters

  • biomass: Aboveground biomass (Mg/ha)

  • dem: Digital Elevation Model (m)

  • landcover: Land cover classification (6 classes)

  • species_richness: Number of species per pixel

vectors

  • roads: Road network (Départementale, Forestière, Chemin)

  • water: Water courses (Ruisseau, Rivière, Torrent)

Details

All layers are in Lambert-93 projection (EPSG:2154) and cover the same extent as massif_demo_units.

The returned object can be used directly with nemeton_compute to calculate biophysical indicators.

File Locations

The function loads files from the package installation directory: - Rasters: inst/extdata/massif_demo_*.tif - Vectors: inst/extdata/massif_demo_*.gpkg

See also

massif_demo_units, nemeton_layers, nemeton_compute

Examples

# Load demo parcels and layers
data(massif_demo_units)
layers <- massif_demo_layers()
#> ℹ Loading Massif Demo spatial layers...
#> ℹ Created layer catalog: 4 rasters, 2 vectors
#> ✔ Loaded 4 raster layers and 2 vector layers

# Inspect layers
print(layers)
#> 
#> ── nemeton_layers object ───────
#> 
#> ── Rasters (4) ──
#> 
#> • biomass : massif_demo_biomass.tif [not loaded] 
#> • dem : massif_demo_dem.tif [not loaded] 
#> • landcover : massif_demo_landcover.tif [not loaded] 
#> • species_richness : massif_demo_species_richness.tif [not loaded] 
#> 
#> ── Vectors (2) ──
#> 
#> • roads : massif_demo_roads.gpkg [not loaded] 
#> • water : massif_demo_water.gpkg [not loaded] 
#> 

if (FALSE) { # \dontrun{
# Compute all indicators
results <- nemeton_compute(
  massif_demo_units,
  layers,
  indicators = "all",
  preprocess = TRUE
)

# Carbon indicator only
carbon <- nemeton_compute(
  massif_demo_units,
  layers,
  indicators = "carbon",
  preprocess = TRUE
)

# Water regulation (using DEM and water courses)
water <- nemeton_compute(
  massif_demo_units,
  layers,
  indicators = "water",
  preprocess = TRUE
)

# Fragmentation (using land cover)
fragmentation <- nemeton_compute(
  massif_demo_units,
  layers,
  indicators = "fragmentation",
  forest_values = c(1, 2, 3), # Forest classes
  preprocess = TRUE
)
} # }