Turfjs / Turfjs/turf

booleanPointInPolygon returns incorrect value

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@turf/boolean-point-in-polygon
Dominant language
TypeScript
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Description

Turf# 6.5.0

const polygon = [[
[ 77.21418627906807, 28.56859702973236 ],
​​ [ 77.2143121078577, 28.568590440235624 ],
​ [ 77.21430428987539, 28.568475290722375 ],
[ 77.21418099797054, 28.568480870087683 ],
[ 77.21418627906807, 28.56859702973236 ]
​​]];

const point = [
​77.214556634366,
28.56853820899876
​];

const pointsWithinPolygon = turf.booleanPointInPolygon(turf.point(point), turf.ploygon(polygon)); // returns true

The above sample returns true when it should be false. Other javascript implementations [https://stackoverflow.com/questions/22521982/check-if-point-is-inside-a-polygon] return the same result.

I am not sure what is wrong here, thanks for your help.

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by correcting the sample's turf.ploygon typo and reproducing the provided polygon and point with booleanPointInPolygon. Inspect that function's implementation and existing tests; done means the sample returns false and a regression test captures the expected behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript, typescript
Domain
data
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
38/100

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