lawn (version 0.6.0)

lawn_simplify: Simplify GeoJSON data

Description

Takes a data-LineString or data-Polygon and returns a simplified version.

Usage

lawn_simplify(
  feature,
  tolerance = 0.01,
  high_quality = FALSE,
  mutate = FALSE,
  lint = FALSE
)

Arguments

feature

A data-Feature<(data-LineString, data-Polygon, data-MultiLineString, data-MultiPolygon)>, or data-FeatureCollection, or data-GeometryCollection

tolerance

(numeric) Simplification tolerance. Default value is 0.01.

high_quality

(boolean) Whether or not to spend more time to create a higher-quality simplification with a different algorithm. Default: FALSE

mutate

(boolean) allows GeoJSON input to be mutated (significant performance increase if TRUE). Default: FALSE

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 simplified feature.

A Feature of either data-Polygon or data-LineString.

Details

Internally uses simplify-js to perform simplification.

See Also

Other transformations: lawn_bezier(), lawn_buffer(), lawn_concave(), lawn_convex(), lawn_difference(), lawn_intersect(), lawn_merge(), lawn_union()

Examples

# NOT RUN {
feature <- '{
  "type": "Feature",
  "properties": {},
  "geometry": {
    "type": "Polygon",
    "coordinates": [[
      [-70.603637, -33.399918],
      [-70.614624, -33.395332],
      [-70.639343, -33.392466],
      [-70.659942, -33.394759],
      [-70.683975, -33.404504],
      [-70.697021, -33.419406],
      [-70.701141, -33.434306],
      [-70.700454, -33.446339],
      [-70.694274, -33.458369],
      [-70.682601, -33.465816],
      [-70.668869, -33.472117],
      [-70.646209, -33.473835],
      [-70.624923, -33.472117],
      [-70.609817, -33.468107],
      [-70.595397, -33.458369],
      [-70.587158, -33.442901],
      [-70.587158, -33.426283],
      [-70.590591, -33.414248],
      [-70.594711, -33.406224],
      [-70.603637, -33.399918]
    ]]
  }
}'

lawn_simplify(feature, tolerance = 0.01)
# }
# NOT RUN {
lawn_simplify(feature, tolerance = 0.01) %>% view
# }