lawn_rewind: Rewind

In lawn: Client for 'Turfjs' for 'Geospatial' Analysis

Description

Rewind (Multi)LineString or (Multi)Polygon outer ring counterclockwise and inner rings clockwise (Uses Shoelace Formula)

Usage

lawn_rewind(x, reverse = FALSE, mutate = FALSE, lint = FALSE)

Arguments

x	A data-FeatureCollection or data-Feature with Polygon, MultiPolygon, LineString, or MultiLineString
reverse	(logical) enable reverse winding. Default: FALSE
mutate	(logical) 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 data-FeatureCollection

Examples

x <- '{
"type": "Feature",
"properties": {},
"geometry": {
  "type": "Polygon",
  "coordinates": [
    [[121, -29], [138, -29], [138, -18], [121, -18], [121, -29]]
   ]
  }
}'
lawn_rewind(x, TRUE)
lawn_rewind(x, mutate = TRUE)
lawn_rewind(x, lint = TRUE)

Example output

<FeatureCollection>
  Bounding box: 121.0 -29.0 138.0 -18.0
  No. features: 0
  No. points: 0
  Properties: NULL
<FeatureCollection>
  Bounding box: 121.0 -29.0 138.0 -18.0
  No. features: 0
  No. points: 0
  Properties: NULL
<FeatureCollection>
  Bounding box: 121.0 -29.0 138.0 -18.0
  No. features: 0
  No. points: 0
  Properties: NULL

lawn documentation built on Jan. 6, 2021, 5:07 p.m.