CODEWITHSUNDEEP
elasticsearch
Yeggeps
Yeggeps

Reputation: 2105

Wrong distance returned by ElasticSearch distanceInKm

I've implemented a script field that returns distance like here Return distance in elasticsearch results?

Ruby:

{
  script_fields: {
    distance: {
      script: "doc['#{source_field}'].distanceInKm(#{lat}, #{lng})"
    }
  }
}

However the distance returned isn't correct. If the point is close, the distance is more correct but as it gets further away it gets more and more incorrect.

Can't seem to figure out what I'm doing wrong.

Upvotes: 3

Views: 1050

Answers (1)

imotov
imotov

Reputation: 30163

distanceInKm() calculates distance as points on a plane, which is fast but not very accurate. Try using arcDistanceInKm() instead.

Upvotes: 8

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