Changed Earth radius to reflect the constant used by MongoDB #1470
Conversation
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Because MongoDB converts radians to meters using the equatorial radius of the Earth, rather than the average radius of the Earth, documentation should recommend using this number to ensure correct conversions. Currently, documentation recommends using the average radius, which will result in a slightly inaccurate conversion. |
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Docs team - please hold pending a review of mongodb/mongo#588 (SERVER-12128). @rps discovered that we have been inconsistent in our use of this constant, and we need to sort out which value we're committing to across the board. |
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Bulk closing stale pull requests. |
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The net effect of having documentation inconsistent with the constants used by Mongo is that end users will conduct inaccurate conversions from kilometers to radians. For geospatial applications reliant on Mongo, this results in inaccurate and incomplete proximity search. While I understand that changing the constant used by Mongo breaks existing indexes, I still don't understand why the documentation does not reflect the variable used. |
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Merged. |
* DOCSP-22373 adding new push example * DOCSP-22373 adding new push example * DOCSP-22373 adding new push example * DOCSP-22373 adding new push example * DOCSP-22373 adding new push example * DOCSP-22373 minor edits * DOCSP-22373 minor word change
MongoDB sets a constant defining the Earth's radius in km as 6378.1. Documentation should reflect this to ensure that users are consistent in their conversion from km to rad.