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nansencenter / metanorm

Metadata normalizing tool

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Some PODAAC datasets have geospatial bounds crossing the IDL

aperrin66 opened this issue · comments

commented

Some datasets from PODAAC have their spatial coverage defined as a wkt polygon which crosses the international date line.

For example:

POLYGON((-148.262 60.400, -147.443 25.982, -177.157 21.480, 161.791 52.861, -148.262 60.400))

This causes the coverage to be interpreted the wrong way (going "the long way" around the globe).
The spatial coverage for these datasets needs to be defined as a multipolygon, split along the IDL.

In the case of the previous example:

MULTIPOLYGON (((-148.262 60.4, -147.443 25.982, -177.157 21.48, -180 25.71789582937487, -180 55.60946639437804, -148.262 60.4)), ((180 25.71789582937487, 161.791 52.861, 180 55.60946639437804, 180 25.71789582937487)))