View source: R/esp_get_roads.R
esp_get_roads | R Documentation |
sf
LINESTRING
of the roads of SpainLoads a sf
LINESTRING
object representing the main roads of
Spain.
esp_get_roads(
year = Sys.Date(),
epsg = "4258",
cache = TRUE,
update_cache = FALSE,
cache_dir = NULL,
verbose = FALSE,
moveCAN = TRUE
)
year |
Release year. See Details for years available. |
epsg |
projection of the map: 4-digit EPSG code. One of:
|
cache |
A logical whether to do caching. Default is |
update_cache |
A logical whether to update cache. Default is |
cache_dir |
A path to a cache directory. See About caching. |
verbose |
Logical, displays information. Useful for debugging,
default is |
moveCAN |
A logical |
year
could be passed as a single year ("YYYY" format, as end of year) or
as a specific date ("YYYY-MM-DD" format).
A sf
LINESTRING
object.
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.
While moveCAN
is useful for visualization, it would alter the actual
geographic position of the Canary Islands. When using the output for
spatial analysis or using tiles (e.g. with esp_getTiles()
or
addProviderEspTiles()
) this option should be set to FALSE
in order to
get the actual coordinates, instead of the modified ones. See also
esp_move_can()
for displacing stand-alone sf
objects.
IGN data via a custom CDN (see https://github.com/rOpenSpain/mapSpain/tree/sianedata).
Other infrastructure:
esp_get_railway()
country <- esp_get_country()
Roads <- esp_get_roads()
library(ggplot2)
ggplot(country) +
geom_sf(fill = "grey90") +
geom_sf(data = Roads, aes(color = tipo), show.legend = "line") +
scale_color_manual(
values = c("#003399", "#003399", "#ff0000", "#ffff00")
) +
guides(color = guide_legend(direction = "vertical")) +
theme_minimal() +
labs(color = "Road type") +
theme(legend.position = "bottom")
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