giscoR (version 0.3.1)

gisco_get_units: Get geospatial units data from GISCO API

Description

Download individual shapefiles of units. Unlike gisco_get_countries(), gisco_get_nuts() or gisco_get_urban_audit(), that downloads a full dataset and applies filters, gisco_get_units() downloads a single shapefile for each unit.

Usage

gisco_get_units(
  id_giscoR = "nuts",
  unit = "ES4",
  mode = "sf",
  year = "2016",
  epsg = "4326",
  cache = TRUE,
  update_cache = FALSE,
  cache_dir = NULL,
  verbose = FALSE,
  resolution = "20",
  spatialtype = "RG"
)

Arguments

id_giscoR

Select the unit type to be downloaded. Accepted values are "nuts", "countries" or "urban_audit".

unit

Unit ID to be downloaded. See Details.

mode

Controls the output of the function. Possible values are "sf" or "df". See Value and Details.

year

Release year of the file. One of "2001", "2006", "2010", "2013", "2016" or "2020".

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 .geojson 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 geospatial data. One of

• "60": 1:60million

• "20": 1:20million

• "10": 1:10million

• "03": 1:3million

• "01": 1:1million

spatialtype

Type of geometry to be returned: "RG", for POLYGON and "LB" for POINT.

Value

A sf object on mode = "sf" or a dataframe on mode = "df".

About caching

You can set your cache_dir with gisco_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.

For a complete list of files available check gisco_db.

Details

The function can return a dataframe on mode = "df" or a sf object on mode = "sf".

In order to see the available unit ids with the required combination of spatialtype, year, first run the function on "df" mode. Once that you get the data frame you can select the required ids on the unit parameter.

On mode = "df" the only relevant parameters are spatialtype, year.

See Also

gisco_get_countries()

Other political: gisco_bulk_download(), gisco_get_coastallines(), gisco_get_countries(), gisco_get_lau(), gisco_get_nuts(), gisco_get_postalcodes(), gisco_get_urban_audit()

Examples

# NOT RUN {
cities <- gisco_get_units(
  id_giscoR = "urban_audit",
  mode = "df",
  year = "2020"
)
VAL <- cities[grep("Valencia", cities$URAU_NAME), ]
#   Order from big to small
VAL <- VAL[order(as.double(VAL$AREA_SQM), decreasing = TRUE), ]

VAL.sf <- gisco_get_units(
  id_giscoR = "urban_audit",
  year = "2020",
  unit = VAL$URAU_CODE
)
# Provincia
Provincia <-
  gisco_get_units(
    id_giscoR = "nuts",
    unit = c("ES523"),
    resolution = "01"
  )

# Reorder
VAL.sf$URAU_CATG <- factor(VAL.sf$URAU_CATG, levels = c("F", "K", "C"))

# Plot
library(ggplot2)

ggplot(Provincia) +
  geom_sf(fill = "gray1") +
  geom_sf(data = VAL.sf, aes(fill = URAU_CATG)) +
  scale_fill_viridis_d() +
  labs(
    title = "Valencia",
    subtitle = "Urban Audit",
    fill = "Urban Audit\ncategory"
  )
# }