Transform an Overpass query to return the result in a csv format

Transform an Overpass query to return the result in a csv format

Usage

opq_csv(q, fields, header = TRUE)

Arguments

q

A opq string or an object of class overpass_query constructed with opq or alternative opq builders (+ add_osm_feature/s).

fields

a character vector with the field names.

header

if FALSE, do not ask for column names.

Value

The overpass_query or string with the prefix changed to return a csv.

Details

The output format csv, ask for results in csv. See CSV output mode for details. To get the data, use osmdata_data_frame.

Note

csv queries that reach the timeout will return a 0 row data.frame without any warning. Increase timeout in q if you don't see the expected result.

See also

Other queries: add_osm_feature(), add_osm_features(), bbox_to_string(), getbb(), opq(), opq_around(), opq_enclosing(), opq_osm_id(), opq_string(), overpass_status()

Examples

if (FALSE) { # \dontrun{
q <- getbb ("Catalan Countries", format_out = "osm_type_id") %>%
    opq (out = "tags center", osm_type = "relation", timeout = 100) %>%
    add_osm_feature ("admin_level", "7") %>%
    add_osm_feature ("boundary", "administrative") %>%
    opq_csv (fields = c("name", "::type", "::id", "::lat", "::lon"))
comarques <- osmdata_data_frame (q) # without timeout parameter, 0 rows

qid<- opq_osm_id (
    type = "relation",
    id = c ("341530", "1809102", "1664395", "343124"),
    out = "tags"
) %>%
    opq_csv (fields = c ("name", "name:ca"))
cities <- osmdata_data_frame (qid)
} # }