docs: clarify unit field usage in common metadata #1373
Merged
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Related Issue(s): radiantearth/stac-best-practices#29 (comment)
Proposed Changes:
unitfield should use an empty string ("") for unitless values, should be omitted if not available, andnullis not a valid value.PR Checklist:
or a CHANGELOG entry is not required.
and I have opened issue/PR #XXX to track the change.