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WFS INSPIRE: Download buildings

Source: R/wfs_bu.R
catr_wfs_get_buildings.Rd

Get the spatial data of buildings. The WFS Service allows to perform two types of queries:

  • By bounding box: Implemented on catr_wfs_get_buildings_bbox(). Extract objects included on the bounding box provided. See Details.

  • By cadastral reference: Implemented on catr_wfs_get_buildings_rc(). Extract objects of specific cadastral references.

Usage

catr_wfs_get_buildings_bbox(x, what = "building", srs, verbose = FALSE)

catr_wfs_get_buildings_rc(rc, what = "building", srs = NULL, verbose = FALSE)

Arguments

x

See Details. It could be:

  • A numeric vector of length 4 with the coordinates that defines the bounding box: c(xmin, ymin, xmax, ymax)

  • A sf/sfc object, as provided by the sf package.

what

Information to load. It could be:

  • "building" for buildings.

  • "buildingpart" for parts of a building.

  • "other" for others elements, as swimming pools, etc.

srs

SRS/CRS to use on the query. To check the admitted values check catr_srs_values, specifically the wfs_service column. See Details.

verbose

Logical, displays information. Useful for debugging, default is FALSE.

rc

The cadastral reference to be extracted.

Value

A sf object.

Details

When x is a numeric vector, make sure that the srs matches the coordinate values. Additionally, when the srs correspond to a geographic reference system (4326, 4258), the function queries the bounding box on EPSG:3857 - Web Mercator, to overcome a potential bug on the API side. The result is provided always in the SRS provided in srs.

When x is a sf object, the value srs is ignored. The query is performed using EPSG:3857 (Web Mercator) and the spatial object is projected back to the SRS of the initial object.

API Limits

The API service is limited to a bounding box of 4km2 and a maximum of 5.000 elements.

References

API Documentation.

INSPIRE Services for Cadastral Cartography.

See also

sf::st_bbox()

INSPIRE API functions: catr_atom_get_address(), catr_atom_get_address_db_all(), catr_atom_get_buildings(), catr_atom_get_buildings_db_all(), catr_atom_get_parcels(), catr_atom_get_parcels_db_all(), catr_wfs_get_address_bbox(), catr_wfs_get_parcels_bbox(), catr_wms_get_layer()

Other INSPIRE WFS services: catr_srs_values, catr_wfs_get_address_bbox(), catr_wfs_get_parcels_bbox()

Other buildings: catr_atom_get_buildings(), catr_atom_get_buildings_db_all()

Other spatial: catr_atom_get_address(), catr_atom_get_buildings(), catr_atom_get_parcels(), catr_wfs_get_address_bbox(), catr_wfs_get_parcels_bbox(), catr_wms_get_layer()

Examples

# \donttest{
# Using bbox
building <- catr_wfs_get_buildings_bbox(
  c(
    376550,
    4545424,
    376600,
    4545474
  ),
  srs = 25830
)
library(ggplot2)
ggplot(building) +
  geom_sf() +
  labs(title = "Search using bbox")


# Using rc
rc <- catr_wfs_get_buildings_rc("6656601UL7465N")
library(ggplot2)
ggplot(rc) +
  geom_sf() +
  labs(title = "Search using rc")

# }