gps19 Aug 2004gpsxgpsxgpsspeedcgpscgpxloggertest clients for gpsdxgpsX-options-h -j -V -speedunits mphkphknots-altunits feetmeters-l dms-s smoothingserver:port:devicexgpsspeed-rvX-options-h -V -nc X-color-speedunits mphkphknotsserver:port:devicecgps-h -j -V -speedunits mphkphknots-altunits feetmeters-l dms-m server:port:devicegpxloggerlogfilecgpxlogger-s gpsd-server-p gpsd-port-i poll-interval-h DESCRIPTIONxgpsxgps is a simple test client for
gpsd with an X interface. It displays
current GPS position/time/velocity information and (for GPSes that
support the feature) the locations of accessible satellites.In the sky view, satellites are color-coded to indicate quality
of signal; consult the data display to the left for exact figures in
dB. Diamond icons indicate WAAS/EGNOS satellites, circles indicate
ordinary GPS satellites. Filled icons were used in the last fix,
outline icons were not.xgps accepts an -h option as for
gpsd, or a -V option to dump the package
version and exit.An optional argument may specify a server to get data from; a
colon-separated suffix is taken as a port number. If there is a second
colon-separated suffix, that is taken as a device name to be handed
to the daemon in an F= command.The option can be used to set the
speed units for display; follow the keyword with knots for nautical
miles per hour, kph for kilometres per hour, or mph for miles per
hour. The default is miles per hour. This option can also be set as
the X resource 'speedunits'.The option can be used to set the
altitude units for display; follow the keyword with 'meters' or
'feet'. The default is feet. This option can also be set as the X
resource 'altunits'.The option tells the daemon to hold fix data
across cycles, eliminating jitter from NMEA devices that emit several
partial reports. The downside is that with this switch on the client
will occasionally report stale or invalid data held over from a
previous cycle. This option is ineffective, and not needed, on
SiRFs and most other non-NMEA GPSes. The option sets the format of latitude and
longitude reports. The value 'd' produces decimal degrees and is the
default. The value 'm' produces degrees and decimal minutes. The
value 's' produces degrees, minutes, and decimal seconds.There is a known bug in xgps; it
assumes the default font size is no more than 18 pixels. If this
is not the case, the satellite data display will show fewer than
12 satellites.xgpsspeedxgpsspeed is a speedometer that uses
position information from the GPS. It accepts an -h option and
optional argument as for gps, or a -V
option to dump the package version and exit. Additionally, it accepts
-rv (reverse video) and -nc (needle color) options.The -speedunits option can be used to set the speed units for
display; follow the keyword with knots for nautical miles per hour,
kph for kilometres per hour, or mph for miles per hour. The default
is miles per hour. This option can also be set as the X resource
'speedunits'.cgpscgps is a client resembling
xgps, but without the pictorial
satellite display and able to run on a serial terminal or
terminal emulator. The option prevents cgps
from printing the raw data. This display can also be toggled with the s
command.The option is as described for xgps above.The option will display your magnetic
heading (as opposed to your true heading). This is a calculated
value, not a measured value, and is subject to a potential error of
up to two degrees in the areas for which the calculation is valid
(currently Western Europe, Alaska, and Lower 48 in the USA). The
formulas used are those found in the Aviation Formulary
v1.43.Rather than use X resources to determine which units to use,
cgps looks at variables in its environment.
Here are the variables and values it checks:
GPSD_UNITS one of:
imperial = miles/feet
nautical = knots/feet
metric = km/meters
LC_MEASUREMENT
en_US = miles/feet
C = miles/feet
POSIX = miles/feet
[other] = km/meters
LANG
en_US = miles/feet
C = miles/feet
POSIX = miles/feet
[other] = km/meters
cgps terminates when you send it a
SIGHUP or SIGINT; given default terminal settings this will happen
when you type Ctl-C at it. It will also terminate on 'q'The 'j' command toggles whether or not fix data is cleared at
start of cycle; see the description of the of
xgps (above) and
gpsd8
for discussion.cgpxloggerThis program connects to gpsd, polls for location, and logs
each fix to standard output in GPX (XML) format.The and options can be
used to specify a server and port to query.The option sets the poll interval at which
the logger will collect samples.The option is as described for xgps above.The option causes the program to emit a summary of its
options and then exit.The program also writes start and end messages to syslog.gpxloggerThis program listens to DBUS broadcasts from gpsd (org.gpsd.fix)
and logs each fix to standard output as they arrive in an XML format.The output may be composed of multiple tracks. A new track is
created if there's no fix for 5 seconds.The program also writes start and end messages to syslog.SEE ALSOgpsd8,
libgps3,
libgpsd3,
gpsfake1,
gpsctl1,
gpscat1,
gpsprof1.
AUTHORS
Remco Treffcorn, Derrick Brashear, Russ Nelson & Eric S. Raymond(xgps).
Jeff Francis (cgps). Amaury Jacquot sxpert@esitcom.org
& Petter Reinholdtsen pere@hungry.com (gpxlogger).
Chris Kuethe chris.kuethe@gmail.com (cgpxlogger).
This manual page by Eric S. Raymond esr@thyrsus.com.
There is a project page, with xgps
screenshots, at berlios.de.