Elasticsearch and Antarctica

[DaveCTurner]

I was recently looking into issue #3 from the Elasticsearch side, along with the related issues elastic/elasticsearch#27832 and elastic/elasticsearch#17407.

elastic/elasticsearch#17407 (comment) also applies to your issue, as does the fix (setting "orientation": "clockwise" in the mapping).

However, it seems that you managed to simplify your Antarctica outline to one that Elasticsearch does accept in #39, even though it still looks to be oriented clockwise. It's possible that the shape that Elasticsearch has indexed is not the shape you asked for, because of the code linked in elastic/elasticsearch#27832 (comment).

I'd recommend fixing the mapping, or reversing the orientation of the Antarctica outline to make it anticlockwise as per the GeoJSON spec, to make sure that Elasticsearch indexes it correctly. If you do so, it looks like you can revert #39 and use the original higher-precision outline (suitably reversed). Meanwhile we're looking at this leniency in more detail in elastic/elasticsearch#27832.

[DaveCTurner]

It's possible that the shape that Elasticsearch has indexed is not the shape you asked for

This is wrong: Elasticsearch does index your Antarctica outline correctly after all. Sorry if I caused undue alarm.