JarCastingturf-convex
turf.convex(input)
Takes a set of Point|points and returns a convex hull polygon.
Internally this uses the convex-hull module that implements a monotone chain hull.
Parameters
| parameter | type | description |
|---|---|---|
input |
FeatureCollection.<Point> | input points |
Example
var points = {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"properties": {},
"geometry": {
"type": "Point",
"coordinates": [10.195312, 43.755225]
}
}, {
"type": "Feature",
"properties": {},
"geometry": {
"type": "Point",
"coordinates": [10.404052, 43.8424511]
}
}, {
"type": "Feature",
"properties": {},
"geometry": {
"type": "Point",
"coordinates": [10.579833, 43.659924]
}
}, {
"type": "Feature",
"properties": {},
"geometry": {
"type": "Point",
"coordinates": [10.360107, 43.516688]
}
}, {
"type": "Feature",
"properties": {},
"geometry": {
"type": "Point",
"coordinates": [10.14038, 43.588348]
}
}, {
"type": "Feature",
"properties": {},
"geometry": {
"type": "Point",
"coordinates": [10.195312, 43.755225]
}
}
]
};
var hull = turf.convex(points);
var resultFeatures = points.features.concat(hull);
var result = {
"type": "FeatureCollection",
"features": resultFeatures
};
//=result
Returns Feature.<Polygon>, a convex hull
Installation
Requires nodejs.
$ npm install turf-convex
Tests
$ npm test
