就是一個多邊形，拉出範圍，選出範圍內的項目。
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Sep 1, 2017 - HTML
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polygon-demo
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Map Polygon with free draw option.
map leaflet polygon leaflet-map mapbox raycasting leafletjs raycast-algorithm polygon-demo map-polygon polygon-area
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Aug 29, 2017 - JavaScript
This library takes geoJson (only multipolygon type) and check weather point(lat, lon) is inside polygon or not and return property of matched polygon.
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Nov 22, 2019 - Scala
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