lawn (version 0.6.0)

lawn_centroid: Centroid

Description

Takes one or more features and calculates the centroid using the arithmetic mean of all vertices. This lessens the effect of small islands and artifacts when calculating the centroid of a set of polygons.

Usage

lawn_centroid(features, properties = NULL, lint = FALSE)

Arguments

features

Input features, as a data-Feature or data-FeatureCollection

properties

A list of properties. Default: NULL

lint

(logical) Lint or not. Uses geojsonhint. Takes up increasing time as the object to get linted increases in size, so probably use by default for small objects, but not for large if you know they are good geojson objects. Default: FALSE

Value

a data-Feature<(data-Point)> - centroid of the input features

See Also

Other measurements: lawn_along(), lawn_area(), lawn_bbox_polygon(), lawn_bbox(), lawn_bearing(), lawn_center_of_mass(), lawn_center(), lawn_destination(), lawn_distance(), lawn_envelope(), lawn_extent(), lawn_line_distance(), lawn_midpoint(), lawn_point_on_feature(), lawn_pt2line_distance(), lawn_square()

Examples

# NOT RUN {
poly <- '{
  "type": "Feature",
  "properties": {},
  "geometry": {
    "type": "Polygon",
    "coordinates": [[
      [105.818939,21.004714],
      [105.818939,21.061754],
      [105.890007,21.061754],
      [105.890007,21.004714],
      [105.818939,21.004714]
     ]]
  }
}'
lawn_centroid(features = poly)
lawn_centroid(features = as.feature(poly))
lawn_centroid(features = poly, properties = list(foo = "bar"))
# }