Re: [gpsd-users] Create fakegpsd input from coordinates

[Fulup Ar Foll]

For your information,

GeoGate provides a NMEA+AIS simulator[1] this simulator takes as input a 
GPX route and generate either NMEA or AIS packet.

Hope it will help.

Fulup

[1] https://github.com/fulup-bzh/GeoGate/tree/master/simulator

On 06/03/2017 14:53, Peter Jenik wrote:
> Hi Attila,
>
>
>
> I would build a NMEA File and then feed it to gpsfake. Building a NMEA
> File from your coordinates should be easy:
>
>
>
> *$GPGLL*
>
> Geographic Position, Latitude / Longitude and time.
>
> eg1. $GPGLL,3751.65,S,14507.36,E*77
>
> eg2. $GPGLL,4916.45,N,12311.12,W,225444,A
>
>
>
>            4916.46,N    Latitude 49 deg. 16.45 min. North
>
>            12311.12,W   Longitude 123 deg. 11.12 min. West
>
>            225444       Fix taken at 22:54:44 UTC
>
>            A            Data valid
>
>
>
> eg3. $GPGLL,5133.81,N,00042.25,W*75
>
>                1    2     3    4 5
>
>
>
>       1    5133.81   Current latitude
>
>       2    N         North/South
>
>       3    00042.25  Current longitude
>
>       4    W         East/West
>
>       5    *75       checksum
>
> $--GLL,lll.ll,a,yyyyy.yy,a,hhmmss.ss,A llll.ll = Latitude of position
>
> a = N or S
> yyyyy.yy = Longitude of position
> a = E or W
> hhmmss.ss = UTC of position
> A = status: A = valid data
>
>
>
> courtesy of http://aprs.gids.nl/nmea/#gll
>
>
>
> Convert your Lat/Lon accordingly (Degrees*100+Minutes.<point>decimal
> fraction of minute) When omitting the time and using “A” instead of
> calculating a checksum then do not forget to insert the extra comma, it
> might be needed.
>
>
>
> HTH
>
> Peter
>
>
>
> *Von:*gpsd-users [mailto:address@hidden
> *Im Auftrag von *tom schuring
> *Gesendet:* Montag, 06. März 2017 08:25
> *An:* GPSd-users; Salamon Attila
> *Betreff:* Re: [gpsd-users] Create fakegpsd input from coordinates
>
>
>
> From http://www.catb.org/gpsd/gpsfake.html
>
> The logfiles may contain packets in any supported format, including in
> particular NMEA, SiRF, TSIP, or Zodiac. Leading lines beginning with #
> will be treated as comments and ignored, except in the following ......
>
> So I would Google for "generate nmea file"
>
> And try a few of the simulators that come up in the result.
>
> Or dive into the nmea spec and hand generate them.
>
> Perhaps someone else has a quicker way.
>
>
>
>
> On 6 Mar 2017, 5:39 PM +1100, Salamon Attila
> <address@hidden <mailto:address@hidden>>, wrote:
>
> Hello,
>
> (Sorry for my english.)
>
> I have GPS points of a path in text format:
> latitude1,longitude1
> latitude2,longitude2
> ...
> latitudeN,longitudeN .
>
> Latitude and longitude are floating point numbers.
> How can I create an input file for fakegps from the coordinates?
>
> Thanks in advance,
> --
> Best Regards,
> Attila Salamon