update_firstline_db

FirstlineDBFilter.update_firstline_db(satname=None, start_date=None, end_date=None, overwrite=False)

Create / update the firstline database

Create or update the database describing for each granule what the first scanline is that doesn’t occur in the preceding granule.

If a granule is entirely contained within the previous one, firstline is set to L+1 where L is the number of lines.