Get metadata and links to available digital elevation models

Usage

DEM_request(x)

Arguments

x: an sf, sfc or SpatVector object with one or more features (requests are based on the bounding boxes of the provided features)

Value

a data frame with metadata and links to the digital elevation models (different formats of digital terrain model, digital surface model and point clouds)

Details

The server can return a maximum of 2000 records in a single query. If your area of interest exceeds this limit, you can generate a grid of smaller polygons (sf::st_make_grid()) or a regular grid of points (sf::st_sample()).

Note

The type of the avgElevErr attribute is not returned correctly. Currently it is returned as an integer, while it should be floating point. This is an upstream issue in Geoportal.

Examples

if (FALSE) { # \dontrun{
library(sf)
polygon_path = system.file("datasets/search_area.gpkg", package = "rgugik")
polygon = read_sf(polygon_path)
req_df = DEM_request(polygon)

# simple filtering by attributes
req_df = req_df[req_df$year > 2018, ]
req_df = req_df[req_df$product == "PointCloud" & req_df$format == "LAS", ]
} # }