Create nemeton_layers object — nemeton

Creates a catalog of spatial layers (rasters and vectors) with lazy loading.

Usage

nemeton_layers(rasters = NULL, vectors = NULL, validate = TRUE)

Arguments

rasters: Named list of paths to raster files (GeoTIFF, etc.)
vectors: Named list of paths to vector files (GeoPackage, shapefile, etc.)
validate: Logical. Validate file existence? Default TRUE.

Value

An object of class nemeton_layers

Details

Layers are not loaded into memory until first use (lazy loading). This allows creating a catalog of large rasters without memory overhead.

Examples

if (FALSE) { # \dontrun{
layers <- nemeton_layers(
  rasters = list(
    ndvi = "data/sentinel2_ndvi.tif",
    dem = "data/ign_mnt_25m.tif"
  ),
  vectors = list(
    rivers = "data/bdtopo_hydro.gpkg",
    roads = "data/routes.shp"
  )
)

summary(layers)
} # }