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       d.mon  - Controls graphics display monitors from the command line.


       display, graphics, monitors


       d.mon --help
       d.mon   [-lpcsrtu]    [start=string]     [stop=string]    [select=string]    [width=value]
       [height=value]    [resolution=value]    [bgcolor=name]     [output=name]     [--overwrite]
       [--help]  [--verbose]  [--quiet]  [--ui]

           List running monitors and exit

           Print name of currently selected monitor and exit

           Print commands for currently selected monitor and exit

           Do not automatically select when starting

           Release and stop currently selected monitor and exit

           Disable true colors

           Open output file in update mode
           Requires --overwrite flag

           Allow output files to overwrite existing files

           Print usage summary

           Verbose module output

           Quiet module output

           Force launching GUI dialog

           Name of monitor to start
           Options: wx0, wx1, wx2, wx3, wx4, wx5, wx6, wx7, png, ps, html, cairo

           Name of monitor to stop
           Options: wx0, wx1, wx2, wx3, wx4, wx5, wx6, wx7, png, ps, html, cairo

           Name of monitor to select
           Options: wx0, wx1, wx2, wx3, wx4, wx5, wx6, wx7, png, ps, html, cairo

           Width for display monitor if not set by GRASS_RENDER_WIDTH
           Default value: 640

           Height for display monitor if not set by GRASS_RENDER_HEIGHT
           Default value: 480

           Dimensions of display monitor versus current size
           Example: resolution=2 enlarge display monitor twice to 1280x960

           Background color
           Either a standard color name, R:G:B triplet, or "none"
           Default: white

           Name for output file (when starting new monitor)
           Ignored for ’wx’ monitors


       d.mon  allows  the  user  to  start,  select,  list,  release, and stop available graphics

   Starting a monitor
       In order to display on-screen GRASS graphics, the user must start and  select  a  graphics
       monitor.  By  default,  the  start  command  actually runs two commands, to both start and
       select whatever monitor is named by the user. The user can get a list of running  monitors
       by setting the -l flag on the command line. Note that some monitor drivers use environment
       variables or the specific driver documentation.

       When a monitor is started, it is  therefore  also  (automatically)  selected  for  output,
       unless  the -s flag is set by the user; the user can also explicitly select a monitor that
       has been started.

       The desired monitor should be started once and need not be restarted unless it is  stopped
       for  some reason. A monitor may continue to run for any length of time, even when no GRASS
       session is being run.

   Stopping a monitor
       A graphics monitor has two different types of status: monitor  program  not  running,  and
       monitor  running.  A  monitor  that  has  been  started  and/or selected will be listed as
       running; a monitor that has been stopped (or not started) will be listed as  not  running.
       The -l flag will list all currently running monitors.

   Selecting a monitor
       When  the  user  starts a monitor, it is also (automatically) selected for graphics output
       unless the user sets the -s flag.  In order to use (direct graphics output to) a  monitor,
       the  user  must select that monitor for use, either by simply starting the monitor without
       the -s flag or by explicitly selecting the monitor for output. Only running  monitors  can
       be selected for graphics output.

       The  user  can  run  multiple  graphics  monitors  by simply starting each of the graphics
       monitors he wishes to direct output to.

   Releasing (unselecting) a monitor
       Currently selected a monitor can be released by -r flag.


   wx0 monitor
       To start interactive wxGUI map display, run
       d.mon start=wx0
       All data will be rendered on wx0 display.

   CAIRO file renderer monitor
       A new CAIRO monitor can be started (and selected) by
       d.mon start=cairo output=out.pdf
       From this moment all data will be rendered into file output.pdf.

   List running monitors
       To list running monitors, use
       d.mon -l
       List of running monitors:

   Show currently selected monitor
       To determine currently selected monitor
       d.mon -p

   Switching between monitors
       To switch back to interactive, earlier started and still running wxGUI monitor
       d.mon select=wx0

   Stopping a monitor
       To close the wxGUI monitor
       d.mon stop=wx0


        d.erase, d.redraw, d.rast, d.vect

       See also list of variables for rendering, display drivers


       Martin Landa, OSGeoREL, Czech Technical University in Prague, Czech Republic

       Last changed: $Date: 2014-12-27 23:51:00 +0100 (Sat, 27 Dec 2014) $

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