windfarmGA (version 5.0.0)

terrain_model: Get terrainhic rasters

Description

Calculate the SpatRasters needed for the terrain model.

Usage

terrain_model(
  terrain = TRUE,
  area,
  ccl,
  ccl_roughness,
  plot = FALSE,
  verbose = FALSE
)

Value

A list of SpatRasters

Arguments

terrain

Terrain model (elevation + land cover). TRUE downloads a DEM via elevatr. Pass a DEM raster to skip the download. Per-cell values are computed once and stored in the result as terrainModel for plot_result() / random_search().

area

Site polygon (sf, SpatialPolygons, or coordinate matrix). Must be projected in metres.

ccl

Path to a Corine Land Cover raster when terrain is on.

ccl_roughness

Path to the CLC legend CSV (Rauhigkeit_z column).

plot

Plot the elevation and roughness rasters

verbose

Print a line per generation.

Examples

if (FALSE) {
library(sf)
area <- sf::st_as_sf(sf::st_sfc(
  sf::st_polygon(list(cbind(
    c(4651704, 4651704, 4654475, 4654475, 4651704),
    c(2692925, 2694746, 2694746, 2692925, 2692925)
  ))),
  crs = 3035
))
Polygon_wgs84 <- sf::st_transform(area, st_crs(4326))
srtm <- elevatr::get_elev_raster(locations = Polygon_wgs84, z = 11)
res <- terrain_model(srtm, area)
}