osm_multipolygons | R Documentation |
osm_multipolygons
from an osmdata objectid
must be of an osm_points
, osm_lines
, or
osm_polygons
object. osm_multipolygons
returns any multipolygon
object(s) which contain the object specified by id
.
osm_multipolygons(dat, id)
dat |
An object of class osmdata |
id |
OSM identification of one or more objects for which multipolygons are to be extracted |
An sf Simple Features Collection of multipolygons
Other search:
osm_lines()
,
osm_multilines()
,
osm_points()
,
osm_polygons()
## Not run: # find all multipolygons which contain the single polygon called # "Chiswick Eyot" (which is an island). dat <- opq ("London UK") %>% add_osm_feature (key = "name", value = "Thames", exact = FALSE) %>% osmdata_sf () index <- which (dat$osm_multipolygons$name == "Chiswick Eyot") id <- rownames (dat$osm_polygons [id, ]) osm_multipolygons (dat, id) # That multipolygon is the Thames itself, but note that nrow (dat$osm_multipolygons) # = 14 multipolygon objects nrow (osm_multipolygons (dat, id)) # = 1 - the main Thames multipolygon ## End(Not run)
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.