Re: Strangeness with speed

[Владимир Калачихин]

Ok, some resume:
If NMEA input has GGA only - the gpsd doesn't try to calculate speed. No 
speed in JSON.
If NMEA input has GGA only - the gpsd ignore such mismatch as the same 
time in several sentences. Both in the past and now.

If NMEA input has RMC only - the gpsd ignore such mismatch as the same 
time in several sentences. Both in the past and now. The speed is 
present in JSON.

If NMEA input has GGA and RMC - the gpsd ignore such mismatch as the 
same time in several sentences in the past. In JSON is present speed 
from RMC.

If NMEA input has GGA and RMC sentences and at the current time has such 
mismatch as the same time in several sentences - for every GGA with the 
same time as previous the gpsd returns JSON with speed == 0.


If we will consider the first behavior as normal - the last behavior is 
strange. The normal will be ignore a mismatch such as in previous cases.





Владимир Калачихин