Provided by: gpsd-clients_2.39-5_i386 bug

NAME

       xgps, xgpsspeed, cgps, lcdgps, cgpxlogger - test clients for gpsd

SYNOPSIS

       xgps [X-options] [-h] [-V] [-j] [-speedunits {[mph] | [kph] | [knots]}]
            [-altunits {[feet] | [meters]}] [-l [[d] | [m] | [s]]] [server
            [:port [:device]]]

       xgpsspeed [-rv] [X-options] [-h] [-V] [-nc X-color]
                 [-speedunits {[mph] | [kph] | [knots]}] [server [:port
                 [:device]]]

       cgps [-h] [-V] [-j] [-speedunits {[mph] | [kph] | [knots]}]
            [-altunits {[feet] | [meters]}] [-l [[d] | [m] | [s]]] [-m] [-s]
            [server [:port [:device]]]

       lcdgps [-h] [-V] [-j] [-l [[d] | [m] | [s]]] [-u [[i] | [n] | [m]]]
              [server [:port [:device]]]

       gpxlogger

       gpxlogger [-h] [-V] [-j] [-i track timeout] [server [:port [:device]]]

DESCRIPTION

       These are the demonstration clients shipped with gpsd. They have some
       common options:

       The -h option causes each client to emit a summary of its options and
       then exit.

       The -V option causes each client to dump the package version and exit.

       The -j option, where present, 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. See also the discussion of the J command in
       gpsd(8).

       The -l option, when present, 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.

       An optional argument to any client 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 (or equivalent).

       Not all clients shipped with GPSD are documented here. See also the
       separate manual pages for gpspipe(1) and gpsmon(1).

   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.

       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´.

       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 displaying the raw data. This display
       can also be toggled with the s command.

       The -m 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´

   lcdgps
       A client that passes gpsd data to lcdproc, turning your car computer
       into a very expensive and nearly feature-free GPS receiver. Currently
       assumes a 4x40 LCD and writes data formatted to fit that size screen.
       Also displays 4- or 6-character Maidenhead grid square output.

       Options are as for cgps, except: The -u sets the display format the
       units used for altitude and speed. The options are: “i” for Imperial
       units (feet/miles-per-hour); “n” for nautical (feet/knots); ´m´ for
       metric (meters/kilometers-per-hour).

   gpxlogger
       This program collects fixes from gpsd and logs them to standard output
       in GPX, an XML profile for track logging.

       The output may be composed of multiple tracks. A new track is created
       if there´s no fix for an interval specified by the -i and defaulting to
       5 seconds.

       If D-Bus support is available on the host and GPSD is configured to use
       it, this program listens to DBUS broadcasts from gpsd. (org.gpsd.fix).
       Otherwise, it uses a conventional socket connection.

       The -j option is only meaningful in socket mode and when collecting
       fixes from an NMEA device. Presence of a server-port-device
       specification forces use of sockets even on a D-Bus capable system,
       though this is unlikely to be of interest to anyone except GPSD
       developers.

SEE ALSO

       gpsd(8), libgps(3), libgpsd(3), gpsfake(1), gpsctl(1), gpscat(1),
       gpsprof(1).  gpspipe(1).  gpsmon(1).

AUTHORS

       Remco Treffcorn, Derrick Brashear, Russ Nelson & Eric S. Raymond, Jeff
       Francis (cgps). Amaury Jacquot sxpert@sxpert.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/

[FIXME: source]                   08/15/2009                           XGPS(1)