Provided by:
gpsd-clients_2.37-4_i386 
NAME
xgps, xgpsspeed, cgps, cgpxlogger - test clients for gpsd
SYNOPSIS
xgps [X-options] [-h] [-j] [-V] [-speedunits {[mph] | [kph] | [knots]}]
[-altunits {[feet] | [meters]}] [-l [[d] | [m] | [s]]]
[-s smoothing] [server [:port [:device]]]
xgpsspeed [-rv] [X-options] [-h] [-V] [-nc X-color]
[-speedunits {[mph] | [kph] | [knots]}] [server [:port
[:device]]]
cgps [-h] [-j] [-V] [-speedunits {[mph] | [kph] | [knots]}]
[-altunits {[feet] | [meters]}] [-l [[d] | [m] | [s]]] [server
[:port [:device]]]
gpxlogger [logfile]
cgpxlogger [-s gpsd-server] [-p gpsd-port] [-i poll-interval] [-h]
DESCRIPTION
xgps
xgps 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 -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´.
The -altunits 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 -j 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 -l 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.
xgpsspeed
xgpsspeed 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´.
cgps
cgps is a client resembling xgps, but without the pictorial satellite
display and able to run on a serial terminal or terminal emulator.
The -s option prevents cgps from printing the raw data. This display
can also be toggled with the s command.
The -j option is as described for xgps above.
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 -j of xgps (above) and gpsd(8) for
discussion.
cgpxlogger
This program connects to gpsd, polls for location, and logs each fix to
standard output in GPX (XML) format.
The -s and -p options can be used to specify a server and port to
query.
The -i option sets the poll interval at which the logger will collect
samples.
The -j option is as described for xgps above.
The -h option causes the program to emit a summary of its options and
then exit.
The program also writes start and end messages to syslog.
gpxlogger
This 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 ALSO
gpsd(8), libgps(3), libgpsd(3), gpsfake(1), gpsctl(1), gpscat(1),
gpsprof(1).
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[1].
NOTES
1. berlios.de
http://gpsd.berlios.de/