[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [gpsd-dev] [AIS] About offset and scaling
From: |
Eric S. Raymond |
Subject: |
Re: [gpsd-dev] [AIS] About offset and scaling |
Date: |
Thu, 24 May 2012 16:06:43 -0400 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
Christian Gagneraud <address@hidden>:
> Currently in driver_ais.c an offset is applied for certain message
> fields (IMO 236 and IMO289 met/hydro message), and a scaling is done
> conditionally in gpsd_json.c.
> I think it would be better to apply the offset and the scaling in
> gpsd_json.c. Do you have any objection on doing this?
> I think it make more sense this way. No scaling means raw data, w/
> scaling means "engineering" units. As well when comparing gpsd
> decoding again other decoding, it make the task easier as they show
> the same behaviour (raw + scaling/offset applied).
Agreed. Go for it.
--
<a href="http://www.catb.org/~esr/">Eric S. Raymond</a>