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jerabaul29 / OpenMetBuoy-v2021a

An easy to build, affordable, customizable, open source instrument for oceanographic measurements - with global Iridium coverage
MIT License
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netCDF: GPS vs wave obs? #67

Closed jerabaul29 closed 1 year ago

jerabaul29 commented 1 year ago

@knutfrode

  • You are using the variable "message_type" to separate between observations that are either GPS/position (G) or waves (W), thus acting as a mask if one wants e.g. only GPS positions. char message_kind(trajectory, observation) ; message_kind:long_name = "whether the current [trajectory, observation] contains GPS [kind G], or Waves [kind W], or None [kind N, in case of failed transmission] data." ; This seems fine and understandable for a human reader, but I guess this is an "own invention", and am thus not sure if the file then strictly complies with the CF specifications for trajectories(?) I.e. can the file be automatically parsed by a reader only knowing the CF specifications?

Yes, this may well be suboptimal... I get if I wanted to avoid this method that I would need several different "obs" time bases, i.e. an "obs_GPS", "obs_waves", etc? Do you think this would be better? If so, I am of course happy to change to a "several obs method".

jerabaul29 commented 1 year ago

@gauteh

jerabaul29 commented 1 year ago

Now taken care of by exporting with trajan.