Created
July 11, 2016 17:36
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| var pts = // my point featurecollection | |
| var polys = // my poly featurecollection | |
| var tree = rbush() | |
| polys.features.forEach(function(poly, i){ | |
| var bbox = turf.bbox(poly) | |
| var idx = { | |
| minX: bbox[0], | |
| minY: bbox[1], | |
| maxX: bbox[2], | |
| maxY: bbox[3], | |
| id: i // store polygon's bbox with its index in the featurecollection | |
| }; | |
| }) | |
| pts.features = pts.features.filter(function(pt){ | |
| var isInside = false | |
| // find polygons with bboxes enclosing the point | |
| var collisions = tree.search({ | |
| minX: pt.geometry.coordinates[0], | |
| minY: pt.geometry.coordinates[1], | |
| maxX: pt.geometry.coordinates[0], | |
| maxY: pt.geometry.coordinates[1] | |
| }) | |
| collisions | |
| .map(function(collision){ | |
| // lookup polygon by the index of the feature | |
| return polys.features[collision.id] | |
| }) | |
| .forEach(function(poly){ | |
| // flip the status if point is inside polygon's hull | |
| if(turf.inside(pt, poly)) isInside = true | |
| }) | |
| return isInside | |
| }) |
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