Re: course of AIS targets

[Владимир Калачихин]

20.05.2023 01:16, Gary E. Miller пишет:
> Since JSON has no "null" value, and numerics must be numeric, it is normal
> to follow the spec and use 360.0 as "not available".  Exactly as the spec
> says to do.

Spec says about 3600...
Ok, but for speed gpsd use 'nan' instead 1023, and for ROT - 'nan' 
instead 128.

> If you prefer, since the COG is "not available", I could change gpsd_json.c
> sp that when 360.0 == COG, to not output the field at all.  Would you
> prefer that.

Yes.




Владимир Калачихин