Add multiple features to an Overpass query
Alternative version of add_osm_feature for creating single queries with multiple features. Key-value matching may be controlled by using the filter symbols described in https://wiki.openstreetmap.org/wiki/Overpass_API/Overpass_QL#By_tag_.28has-kv.29.
add_osm_features(opq, features, bbox = NULL)
opq |
An |
features |
Character vector of key-value pairs with keys and values enclosed in escape-formatted quotations (see examples). |
bbox |
optional bounding box for the feature query; must be set if no opq query bbox has been set |
opq object
add_osm_feature vs add_osm_features
Features defined within an add_osm_features call are combined with a logical OR.
Chained calls to either add_osm_feature or add_osm_features() combines
features from these calls in a logical AND; this is analagous to chaining
dplyr::filter() on a data frame.
add_osm_features() with only one feature is logically equivalent to
add_osm_feature().
Other queries:
add_osm_feature(),
bbox_to_string(),
getbb(),
opq_around(),
opq_enclosing(),
opq_osm_id(),
opq_string(),
opq(),
overpass_status()
## Not run:
q <- opq ("portsmouth usa") %>%
add_osm_features (features = c (
"\"amenity\"=\"restaurant\"",
"\"amenity\"=\"pub\""
))
# This extracts in a single query the same result as the following:
q1 <- opq ("portsmouth usa") %>%
add_osm_feature (
key = "amenity",
value = "restaurant"
)
q2 <- opq ("portsmouth usa") %>%
add_osm_feature (key = "amenity", value = "pub")
c (osmdata_sf (q1), osmdata_sf (q2)) # all restaurants OR pubs
## End(Not run)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.