Incorrect Longitude output
osholsonel20 opened this issue · 3 comments
When trying to run the nmea_navsat_driver the output of longitude is not correct.
Adding an example sentence around the area:
$GPGGA,202656.032,4400.625198,N,8832.555418,W,1,10,0.01,0.021805,M,0.000000,M,,*7C
Using LGSVL simulator, and when running the output message string into a GPS decoder website, it does seem to have the correct location. However, when running the nmea_navsat_driver the longitude is way off
Fixed by setting line 60: in parser.py.
return safe_float(field[0:2]) + safe_float(field[2:]) / 60.0
instead of
return safe_float(field[0:3]) + safe_float(field[3:]) / 60.0
I've checked several online references for the longitude field of the GGA sentence, and it appears that the NMEA standard expects that the format for longitude be 3 digits for degrees longitude followed by the digits for decimal minutes. It looks like your receiver is outputting an incorrect sentence, because it should have a leading zero. 8832.555418 should be 08832.555418.
I'm glad you found a workaround for your receiver, but I don't think there's an error in this package's GGA parser.
It was in LGSVL's message output of gps. It was missing a leading zero, and honestly I'd rather put a leading zero in the output vs. messing with the input! Was a good temporary fix, then I realized the message being received was formatted wrong