KBE3D / KBCore / turf / findPoint

函数: findPoint()

findPoint<G, P>(geojson: G | Feature<G, P> | FeatureCollection<G, P>, options?: { featureIndex?: number; multiFeatureIndex?: number; geometryIndex?: number; coordIndex?: number; properties?: P; bbox?: BBox; id?: Id; }): Feature<Point, P>

Finds a particular Point from a GeoJSON using @turf/meta indexes.

Negative indexes are permitted.

类型参数

G

G extends Geometry

P

P extends GeoJsonProperties = GeoJsonProperties

参数

geojson

Any GeoJSON Feature or Geometry

G | Feature<G, P> | FeatureCollection<G, P>

options?

Optional parameters

featureIndex?

number

Feature Index

multiFeatureIndex?

number

Multi-Feature Index

geometryIndex?

number

Geometry Index

coordIndex?

number

Coord Index

properties?

P

Translate Properties to output Point

bbox?

BBox

Translate BBox to output Point

id?

Id

Translate Id to output Point

返回

Feature<Point, P>

2-vertex GeoJSON Feature Point

示例

var multiLine = turf.multiLineString([
    [[10, 10], [50, 30], [30, 40]],
    [[-10, -10], [-50, -30], [-30, -40]]
]);

// First Segment (defaults are 0)
turf.findPoint(multiLine);
// => Feature<Point<[10, 10]>>

// First Segment of the 2nd Multi-Feature
turf.findPoint(multiLine, {multiFeatureIndex: 1});
// => Feature<Point<[-10, -10]>>

// Last Segment of last Multi-Feature
turf.findPoint(multiLine, {multiFeatureIndex: -1, coordIndex: -1});
// => Feature<Point<[-30, -40]>>