osmdata (version 0.3.0)

unique_osmdata: unique_osmdata

Description

Reduce the components of an osmdata object in 'sf' or 'sp' form (that is, obtained from osmdata_sf() or osmdata_sp() to only unique items of each type. That is, reduce $osm_points to only those points not present in other objects (lines, polygons, etc.); reduce $osm_lines to only those lines not present in multiline objects; and reduce $osm_polygons to only those polygons not present in multipolygon objects. This renders an osmdata object more directly compatible with typical output of sf.

Usage

unique_osmdata(dat)

Value

Equivalent object reduced to only unique objects of each type

Arguments

dat

An object of class osmdata_sf or osmdata_sp

See Also

Other transform: osm_elevation(), osm_poly2line(), trim_osmdata(), unname_osmdata_sf()

Examples

if (FALSE) {
query <- opq ("colchester uk") |>
    add_osm_feature (key = "highway")
# Then extract data from 'Overpass' API
dat <- osmdata_sf (query)
dat
# Then reduce to unique items of each type only:
dat <- unique_osmdata (dat)
dat
}
# And objects of each type (points, line, polygons, and so on) now have
# fewer members.