lawn (version 0.1.7)

lawn_union: Merge polygons

Description

Finds the interesection of two data-Polygon's and returns the union of the two

Usage

lawn_union(poly1, poly2, lint = FALSE)

Arguments

poly1

A polygon

poly2

A polygon

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 combined data-Polygon or data-MultiPolygon feature

Details

Contiguous polygons are combined, non-contiguous polygons are returned as MultiPolygon

See Also

lawn_merge

Other transformations: lawn_bezier, lawn_buffer, lawn_concave, lawn_convex, lawn_erase, lawn_intersect, lawn_merge, lawn_simplify

Examples

poly1 <- '{
 "type": "Feature",
 "properties": {
   "fill": "#0f0"
 },
 "geometry": {
   "type": "Polygon",
   "coordinates": [[
     [-122.801742, 45.48565],
     [-122.801742, 45.60491],
     [-122.584762, 45.60491],
     [-122.584762, 45.48565],
     [-122.801742, 45.48565]
    ]]
 }
}'

poly2 <- '{
 "type": "Feature",
 "properties": {
   "fill": "#00f"
 },
 "geometry": {
   "type": "Polygon",
   "coordinates": [[
     [-122.520217, 45.535693],
     [-122.64038, 45.553967],
     [-122.720031, 45.526554],
     [-122.669906, 45.507309],
     [-122.723464, 45.446643],
     [-122.532577, 45.408574],
     [-122.487258, 45.477466],
     [-122.520217, 45.535693]
     ]]
 }
}'
lawn_union(poly1, poly2)