Handle empty ESMF weight files in chunked RWG

NCPP / ocgis

OpenClimateGIS is a set of geoprocessing and calculation tools for CF-compliant climate datasets.

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Handle empty ESMF weight files in chunked RWG #504

Closed bekozi closed 4 years ago

bekozi commented 5 years ago

ESMF weight files will be created but empty when there are no generated weights and flags allow unmapped points. This needs to be handled correctly when calculating the global merged weight file factor count.

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