Matthew Blissett wrote:
The documentation isn't particularly clear, but you can create the month
chart using the search + facet API:
https://api.gbif.org/v1/occurrence/search?facet=month&facetLimit=12&limit=0
As an example, I looked at the flight time of Nymphalis antiopa, which is known to be around
April-May and August-September. The GBIF Occurrences per Month chart
<https://www.gbif.org/occurrence/charts?has_coordinate=true&has_geospatial_issue=false&taxon_key=5130682>
shows a lot of occurrences in January. I tracked these down to Finish datasets with eventDate
January 01 at 00:00 but for a valid year.
In other words, these are year-only dates, spoiling the Occurrences per Month chart. How do I
filter them out ? Is teventDate given in one or multiple database fields, with possble NULL values
? A work-around would be to give them month number 0.
Regards,
Adriaan van Os
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