s2: s2_bounds_cap – R documentation

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s2_bounds_cap

Compute feature-wise and aggregate bounds

Description

s2_bounds_rect() returns a bounding latitude-longitude rectangle that contains the region; s2_bounds_cap() returns a bounding circle represented by a centre point (lat, lng) and an angle. The bound may not be tight for points, polylines and geometry collections. The rectangle returned may depend on the order of points or polylines. lng_lo values larger than lng_hi indicate regions that span the antimeridian, see the Fiji example.

Usage

s2_bounds_cap(x)

s2_bounds_rect(x)

Arguments

`x`	geography vectors. These inputs are passed to `as_s2_geography()`, so you can pass other objects (e.g., character vectors of well-known text) directly.

Value

Both functions return a data.frame:

s2_bounds_rect(): Columns minlng, minlat, maxlng, maxlat (degrees)
s2_bounds_cap(): Columns lng, lat, angle (degrees)

Examples

s2_bounds_cap(s2_data_countries("Antarctica"))
s2_bounds_cap(s2_data_countries("Netherlands"))
s2_bounds_cap(s2_data_countries("Fiji"))

s2_bounds_rect(s2_data_countries("Antarctica"))
s2_bounds_rect(s2_data_countries("Netherlands"))
s2_bounds_rect(s2_data_countries("Fiji"))

s2

Spherical Geometry Operators Using the S2 Geometry Library

v1.0.4

Apache License (== 2.0)

Authors

Dewey Dunnington [aut] (<https://orcid.org/0000-0002-9415-4582>), Edzer Pebesma [aut, cre] (<https://orcid.org/0000-0001-8049-7069>), Ege Rubak [aut], Jeroen Ooms [ctb] (configure script), Google, Inc. [cph] (Original s2geometry.io source code)

Initial release