esp_get_hydrobasin: Get 'sf' 'POLYGON' of the drainage basin demarcations of...

In dieghernan/mapSpain: Administrative Boundaries of Spain

Get sf POLYGON of the drainage basin demarcations of Spain

Description

Loads a sf POLYGON object containing areas with the required hydrographic elements of Spain.

Usage

esp_get_hydrobasin(
  epsg = "4258",
  cache = TRUE,
  update_cache = FALSE,
  cache_dir = NULL,
  verbose = FALSE,
  resolution = "3",
  domain = "land"
)

Arguments

epsg	projection of the map: 4-digit EPSG code. One of: "4258": ETRS89. "4326": WGS84. "3035": ETRS89 / ETRS-LAEA. "3857": Pseudo-Mercator.
cache	A logical whether to do caching. Default is TRUE. See About caching.
update_cache	A logical whether to update cache. Default is FALSE. When set to TRUE it would force a fresh download of the source file.
cache_dir	A path to a cache directory. See About caching.
verbose	Logical, displays information. Useful for debugging, default is FALSE.
resolution	Resolution of the POLYGON. Values available are "3", "6.5" or "10".
domain	Possible values are "land", that includes only the ground part or the ground or "landsea", that includes both the ground and the related sea waters of the basin.

Details

Metadata available on https://github.com/rOpenSpain/mapSpain/tree/sianedata/.

Value

A sf POLYGON object.

About caching

You can set your cache_dir with esp_set_cache_dir().

Sometimes cached files may be corrupt. On that case, try re-downloading the data setting update_cache = TRUE.

If you experience any problem on download, try to download the corresponding .geojson file by any other method and save it on your cache_dir. Use the option verbose = TRUE for debugging the API query.

Source

IGN data via a custom CDN (see https://github.com/rOpenSpain/mapSpain/tree/sianedata).

See Also

Other natural: esp_get_hypsobath(), esp_get_rivers()

Examples

hydroland <- esp_get_hydrobasin(domain = "land")
hydrolandsea <- esp_get_hydrobasin(domain = "landsea")

library(ggplot2)


ggplot(hydroland) +
  geom_sf(data = hydrolandsea, fill = "skyblue4", alpha = .4) +
  geom_sf(fill = "skyblue", alpha = .5) +
  geom_sf_text(aes(label = rotulo),
    size = 3, check_overlap = TRUE,
    fontface = "bold",
    family = "serif"
  ) +
  coord_sf(
    xlim = c(-9.5, 4.5),
    ylim = c(35, 44)
  ) +
  theme_void()

dieghernan/mapSpain documentation built on Dec. 18, 2024, 12:26 p.m.