s2 (version 1.1.7)

s2_contains: S2 Geography Predicates

Description

These functions operate two geography vectors (pairwise), and return a logical vector.

Usage

s2_contains(x, y, options = s2_options(model = "open"))
s2_within(x, y, options = s2_options(model = "open"))
s2_covered_by(x, y, options = s2_options(model = "closed"))
s2_covers(x, y, options = s2_options(model = "closed"))
s2_disjoint(x, y, options = s2_options())
s2_intersects(x, y, options = s2_options())
s2_equals(x, y, options = s2_options())
s2_intersects_box(
  x,
  lng1,
  lat1,
  lng2,
  lat2,
  detail = 1000,
  options = s2_options()
)
s2_touches(x, y, options = s2_options())
s2_dwithin(x, y, distance, radius = s2_earth_radius_meters())
s2_prepared_dwithin(x, y, distance, radius = s2_earth_radius_meters())

Arguments

x, y

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.

options

An s2_options() object describing the polygon/polyline model to use and the snap level.

lng1, lat1, lng2, lat2

A latitude/longitude range

detail

The number of points with which to approximate non-geodesic edges.

distance

A distance on the surface of the earth in the same units as radius.

radius

Radius of the earth. Defaults to the average radius of the earth in meters as defined by s2_earth_radius_meters().

Model

The geometry model indicates whether or not a geometry includes its boundaries. Boundaries of line geometries are its end points. OPEN geometries do not contain their boundary (model = "open"); CLOSED geometries (model = "closed") contain their boundary; SEMI-OPEN geometries (model = "semi-open") contain half of their boundaries, such that when two polygons do not overlap or two lines do not cross, no point exist that belong to more than one of the geometries. (This latter form, half-closed, is not present in the OpenGIS "simple feature access" (SFA) standard nor DE9-IM on which that is based). The default values for s2_contains() (open) and covers/covered_by (closed) correspond to the SFA standard specification of these operators.

See Also

Matrix versions of these predicates (e.g., s2_intersects_matrix()).

BigQuery's geography function reference:

• ST_CONTAINS

• ST_COVEREDBY

• ST_COVERS

• ST_DISJOINT

• ST_EQUALS

• ST_INTERSECTS

• ST_INTERSECTSBOX

• ST_TOUCHES

• ST_WITHIN

• ST_DWITHIN

Examples

s2_contains(
  "POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))",
  c("POINT (5 5)", "POINT (-1 1)")
)

s2_within(
  c("POINT (5 5)", "POINT (-1 1)"),
  "POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"
)

s2_covered_by(
  "POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))",
  c("POINT (5 5)", "POINT (-1 1)")
)

s2_covers(
  "POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))",
  c("POINT (5 5)", "POINT (-1 1)")
)

s2_disjoint(
  "POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))",
  c("POINT (5 5)", "POINT (-1 1)")
)

s2_intersects(
  "POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))",
  c("POINT (5 5)", "POINT (-1 1)")
)

s2_equals(
  "POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))",
  c(
    "POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))",
    "POLYGON ((10 0, 10 10, 0 10, 0 0, 10 0))",
    "POLYGON ((-1 -1, 10 0, 10 10, 0 10, -1 -1))"
  )
)

s2_intersects(
  "POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))",
  c("POINT (5 5)", "POINT (-1 1)")
)

s2_intersects_box(
  c("POINT (5 5)", "POINT (-1 1)"),
  0, 0, 10, 10
)

s2_touches(
  "POLYGON ((0 0, 0 1, 1 1, 0 0))",
  c("POINT (0 0)", "POINT (0.5 0.75)", "POINT (0 0.5)")
)

s2_dwithin(
  "POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))",
  c("POINT (5 5)", "POINT (-1 1)"),
  0 # distance in meters
)

s2_dwithin(
  "POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))",
  c("POINT (5 5)", "POINT (-1 1)"),
  1e6 # distance in meters
)