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NAME

       wxGUI

DESCRIPTION

       wxGUI  is  a new generation of the Graphical User Interface (GUI) for GRASS GIS written in
       Python using wxPython library. It's a successor of the Tcl/Tk GUI from GRASS 6.

       If wxGUI is not your default GUI, you can define it as default by typing at GRASS  command
       line prompt:
       g.gui -u wxpython
          Alternatively   it  may  be  defined  in  GISRC  file  ($HOME/.grassrc6  on  GNU/Linux,
       $APPDATA\GRASS6\grassrc6 on MS Windows) by GRASS_GUI variable
       GRASS_GUI: wxpython
        The GUI can be quit by selecting the 'File -> Exit GUI' menu item.  On  MS  Windows  when
       GRASS  is  launched  without  an  interactive  command line this will end the entire GRASS
       session. In other cases the terminal window will remain running; type exit at the  command
       prompt to end the GRASS session.

       The GUI can be restarted from the GRASS command line prompt by typing
       g.gui wxpython
        To restart with previously saved workspace file:
       g.gui wxpython workspace=file.gxw

       The  user  can  also start GRASS from the shell command line with the wxGUI specifying the
       -gui (or -wxpython) switch:
       grass65 -gui

       The GUI is composed by two main components:

                     The Layer Manager includes map  layer  management,  integrated  command-line
                     prompt, and command output window tab.

                     The  Map  Display  Window  integrates basic tools for zooming, panning, data
                     querying, and map elements (north  arrows,  barscale,  etc.).  Each  display
                     window  is  associated  with its own set of map layers in the layer manager.
                     The user may start multiple map displays during a session.  The  map  layers
                     for each display are grouped under different tabs in the Layer Manager.

   Layer Manager
       The  Layer  Manager  provides an interactive graphical interface for creating and managing
       GRASS displays. There is a toolbar to manage displayed map layers, a layer tree  frame  in
       which  map  layers for display are organized, a command output window tab, and interactive
       command line prompt. On Linux and Windows platforms, the layer manager also has a menu bar
       with  a  set  of  pull-down  menus  for  all  GRASS GIS functions (analysis, file I/O, GIS
       configuration and management); on a Mac, the GRASS functions menu is at  the  top  of  the
       screen.
       The  top left button of the toolbar opens a new Map Display Window. Each map display has a
       unique set of layers to display and region settings. Other toolbar buttons add  layers  of
       different  types  for  display  in  the  selected map display window. There are additional
       buttons for saving or opening workspace file, and others.

       Map layers are listed in the window frame below the toolbar. Layers can include raster and
       vector  maps, vector labels, and commands (where any GRASS command can be written). Layers
       are displayed as arranged in the layer tree: the bottom layer is displayed first  and  the
       top layer is displayed last, as if the layers were a series of stacked overlays.

       The  check  box  to  the  left of each layer makes it active or inactive for display. Only
       active layers are displayed/redisplayed when the display button is pressed. Layers can  be
       organized  into  groups;  entire groups can be activated or deactivated for display. Layer
       tree composition can be saved to a workspace  file  and  opened  in  subsequent  sessions,
       restoring all layers and their display options.

       A right mouse click on a layer or left clicking the button to the right of the layer opens
       a dropdown menu with options to remove or rename the layer  (g.remove,  g.rename),  change
       its  display  properties (d.rast and d.vect options such as color, symbol, etc.), show its
       metadata (r.info, v.info) or attributes, if applicable.

       A left mouse double click on a layer opens GUI for its display options These  options  are
       those for the d.* command for each layer type (d.rast, d.vect, or d.grid, for example).

   Layer Manager Toolbar
        Start new map display
           Opens a new map display and creates empty layer tree tab in Layer Manager.

        Create new workspace
           Removes  all layers from the layer tree and creates a new, empty tree where new layers
           can be added.

        Open existing workspace file
           Opens an previously saved workspace file, containing a set of display layers and their
           option settings.

        Save current workspace to file
           Saves current set of layers and their options to a workspace file.

        Load map layers into workspace
           Loads selected raster or vector maps into current layer tree.

        Add raster map layer
           Adds raster map to layer tree, see d.rast.

        Add various raster map layers (RGB, HIS, shaded relief...)
           Opens a dropdown menu that allows user to select to:

        Add 3D raster map layer
           Adds 3D raster map to layer tree.

        Add RGB raster layer
           Combines  and  displays  three raster maps defined as red, green, and blue channels to
           create an RGB color map, see d.rgb.

        Add HIS raster layer
           Combines and displays two  or  three  raster  maps  defined  as  hue,  intensity,  and
           (optionally) saturation channels to create a color map, see d.his.

        Add shaded relief raster map layer
           Adds shaded relief raster map layer, see d.shadedmap.

        Add raster arrows layer
           Adds map of raster cells with directional arrows drawn. Arrow direction and length are
           determined by separate aspect/directional map and (optional) slope/intensity map,  see
           d.rast.arrow.

        Add raster numbers layer
           Adds map of raster cells with numbers representing the cell values, see d.rast.num.

        Add vector map layer
           Adds a vector map layer, see d.vect.

        Add various vector map layers (thematic, chart...)
           Opens a dropdown menu that allows user to select to:

        Add thematic area (choropleth) map layer
           (for all vector types)" 4m
           Adds layer for thematic display values from a numeric attribute column associated with
           a vector map. Options include:  thematic  display  type  (graduated  colors  or  point
           sizes), methods for creating display intervals, SQL query of attribute column to limit
           vector objects to display, control of point icon types and sizes, control of  thematic
           color schemes, creation of legend for thematic map, and saving the results of thematic
           mapping to a ps.map instructions file for later printing, see d.vect.thematic.

        Add thematic chart layer (for vector points)
           Adds layer in which pie or bar charts can be automatically  created  at  vector  point
           locations.  Charts  display  values  from selected columns in the associated attribute
           table. Options include: chart type, layer and attributes to chart, chart  colors,  and
           chart size (fixed or based on attribute column), see d.vect.chart.

        Add group
           Adds an empty group. Layers can then be added to the group.

        Add grid or vector labels overlay
           Opens a dropdown menu that allows user to select to:

        Add overlay grids and lines
           Adds layer to display regular grid (for all locations) see d.grid

        Add labels layer for vector objects (from existing labels file)
           Add  a  layer  of  text from a labels file for vector objects created with the v.label
           module.  A labels file can also be created with a text editor, see d.labels.

        Add geodesic line layer
           Add layer  to  display  geodesic  line  for  latitude/longitude  locations  only,  see
           d.geodesic

        Add rhumbline layer
           Add   layer  to  display  rhumblines  (for  latitude/longitude  locations  only),  see
           d.rhumbline.

        Add command layer
           Adds a layer in which a GRASS GIS command or command  list  can  be  entered.   For  a
           command list use the semi-colon (";") symbol as a separator.  For example:
           d.rast soils;d.rast -o roads;d.vect streams col=blue
             Note  that  when an option of the command contains spaces, you need to "escape" them
           with the backslash ('\') character, for example:
           d.text text=Population\ density

        Delete selected layer
           Removes selected map layer or map layer group from layer tree.

        Show attribute table
           Opens attribute table manager for selected vector map.

        Import raster or vector data

        Import raster data
           Import selected raster data into GRASS using r.in.gdal  and  load  them  into  current
           layer tree.

        Import vector data
           Import selected vector data into GRASS using v.in.ogr and load them into current layer
           tree.

        Raster Map Calculator
           Launches Raster Calculator GUI front-end for r.mapcalc.

        Graphical Modeler
           Launches graphical modeler to create models and run them.

        Georectifier Tool
           Launches GCP Manager to create, edit, and manage Ground Control Points.

        Cartographic Composer
           Launches Cartographic Composer to create interactively hardcopy map outputs.

        Show GUI settings
           Opens dialog to change GUI settings.

        Show help
           Opens GRASS manual.

   Key shortcuts
       Ctrl+Tab
           Switch 'Map layers' and 'Command output' tab

       Ctrl+Q
           Quit

       Workspace

       Ctrl+N
           Create new workspace

       Ctrl+O
           Load workspace from file

       Ctrl+S
           Close workspace

       Map Layers

       Ctrl+Shift+L
           Add multiple raster or vector map layers to current map display

       Ctrl+Shift+R
           Add raster map layer to current map display

       Ctrl+Shift+V
           Add vector map layer to current map display

       Ctrl+W
           Close current map display

       Command line prompt

       Tab
           Show command tooltips

       Esc
           Hide command tooltips

       Ctrl+Space
           Map entries without arguments (as in r.info [mapname])

       Up/Down
           List command history

       Enter
           Run command

   Map Display Window
       The map display window includes toolbar that can be docked and undocked from the window, a
       map  canvas  where  a  map composition of one or more layers is displayed, and a statusbar
       with information about the geographic region of the maps displayed.
       Each Map Display Window has a unique layer tree (in  the  layer  manager)  and  geographic
       region  setting.  At  the top of the window is a toolbar with buttons to manage the map in
       the display  (render,  erase,  zoom  and  pan),  for  query  and  and  analysis  (distance
       measurement,  profile,  and  histogram creation), to overlay map elements onto the display
       (scale, north arrow, legend, and custom text), and to export or print the display.

       In the statusbar, the user can choose to display  the  geographic  coordinates  under  the
       cursor,  current  geographical  region  extent,  computational region (including graphical
       visualization in map display), map display geometry (number of rows, columns,  resolution)
       and  map  scale. Checking the render button in the statusbar will cause the map display to
       update automatically any time a map is added to, removed from, or  changed  in  its  layer
       tree.

       It  is  important  to  note  that  zooming  in  any  display  will  have  no effect on the
       'computational region' setting (set with g.region). Only by  selecting  the  'Set  current
       region  to  match  display'  item  in  the zoom menu (in the map display toolbar) will the
       current display extents be copied to the computational region extents.

   Map Display Toolbar
        Display map
           Displays all active layers from layer tree and re-renders for display any layers  that
           have  changed  since  the last time the display was updated, including layers added or
           removed.

        Re-render map
           Re-renders all active layers regardless of whether they have changed or not.

        Erase display
           Erases the currently selected map display to a white background, see d.frame -e.

        Pointer
           Select arrow cursor for map display.

        Query raster/vector maps
           Opens a dropdown menu that allows user to select to:

       Display mode
           Query selected raster, RGB raster (all three map channels will be queried), or  vector
           map(s)  using  the  mouse.  Map(s)  must  be selected before query.  Vector charts and
           thematic vector maps cannot be queried. The results of the query will be displayed  in
           the console window, see v.what.

       Edit mode
           Query  selected vector map in edit mode. The results of the query will be displayed in
           a form that permits editing of the queried vector attributes.

        Pan
           Interactive selection of a new center of view in the active display monitor. Drag  the
           pan  cursor while pressing the left mouse button to pan.  Panning changes the location
           of the region displayed but not the size of the  area  displayed  or  the  resolution.
           Panning  does  not  affect  the  computational  region  for  other  GIS processes, see
           g.region.

        Zoom in
           Interactive zooming with the mouse in the active display monitor.  Drawing  a  box  or
           just  click with the mouse (left button) and zoom-in cursor causes the display to zoom
           in so that the area defined by the box fills the display. The map  resolution  is  not
           changed.  Clicking  with  the  zoom-in  cursor  causes  the display to zoom in by 30%,
           centered on the point where the mouse is clicked. Zooming resets  the  display  region
           extents  (both  size  and  location  of  area  displayed).  It  does  not  affect  the
           computational region for other GIS processes, see g.region.

        Zoom out
           Interactive zooming with the mouse in the active display monitor.  Drawing  a  box  or
           just click with the mouse (left button) and zoom-out cursor causes the display to zoom
           in so that the area displayed shrinks to fill the area defined by  the  box.  The  map
           resolution  is  not  changed.  Clicking with the zoom-out cursor causes the display to
           zoom out by 30%, centered on the point where the mouse is clicked. Zooming resets  the
           display  region extents (both size and location of area displayed). It does not affect
           the computational region for other GIS processes, see g.region.

        Zoom to selected map(s)
           Set zoom extent based on selected raster or vector maps. Zooming  resets  the  display
           region  extents  (both  size  and  location of area displayed). It does not affect the
           computational region for other GIS processes, see g.region.

        Return to previous zoom
           Returns to the previous zoom extent. Up to 10 levels of zoom back are maintained,  see
           g.region.

        Zoom options
           Opens a dropdown menu that allows user to:

                  Zoom to match the extents of a selected map

                  Zoom to match the computational region (set with g.region)

                  Zoom to match the extents of the default region

                  Zoom to match the extents of a saved region

                  Set  computational region (the mapset's WIND file) to match the current display
                  extents (does not change the resolution), see g.region.

                  Save display geometry (current extents) to a named region file

        Analyze menu
           Opens a dropdown menu with:

        Distance measurement tool
           Interactive measurement of lengths defined with the mouse. The length of each  segment
           and the cumulative length of all segments measuered is displayed in the command output
           window frame. Lengths are measured in the current measurement unit, see d.measure.

        Profile tool
           Interactively create profile of a raster map. Profile transect is drawn with the mouse
           in  map  display.  The  profile  may be of the displayed map or a different map. Up to
           three maps can be profiled simultaneously, see Profile Tool help page.

        Histogramming tool
           Displays histogram of selected raster map or image in new window, see d.histogram.

        Add overlay
           opens a dropdown menu that allows user to:

        Add scalebar and north arrow
           Adds layer to display a combined scalebar and north arrow.  Options  include  scalebar
           placement (using screen coordinates or a mouse), scalebar format, and scalebar colors,
           see d.barscale.

        Add raster map legend
           Adds layer to display with legend of selected raster map, see d.legend.

        Add text layer
           Adds layer to display a line of text using default GRASS font (selected with  d.font).
           Options  include:  text  placement  (screen  coordinates); and text size, bolding, and
           color, see d.text.

        Save display to graphic file
           Save the visible image in map display to different raster graphic formats.

        Print map
           Prints map on system native printer or PostScript device; saves  visible  map  display
           (including PostScript text and labels) to PDF or EPS file.

       Map display mode
           Opens a dropdown menu for selecting different display mode

       2D view mode
           Normal GIS display. All active layers are composited and displayed in 2D mode.

       3D view mode
           Experimental  replacement for NVIZ. Displays all active layers in 3D perspective using
           OpenGL. A new control panel opens to manage the  3D  view.  3D  view  can  be  zoomed,
           panned,  rotated,  and tilted. The vertical exaggeration of rasters and 3D vectors can
           be set. Various color and lighten  settings  are  possible.  Not  yet  functional  for
           Windows platforms

       Digitize mode
           Puts  display into vector digitizing mode and opens a new digitizing toolbar. The user
           can digitize a new map or edit  an  existing  map.  Not  yet  functional  for  Windows
           platforms

SEE ALSO

        wxGUI components

       See also wxGUI wiki page (especially various video tutorials), and Quick wxGUI Tutorial.

        TCL/TK-based GIS Manager, TCL/TK-based Display Manager

AUTHORS

       Czech Technical University in Prague, Czech Republic
       Michael Barton, Arizona State University, USA
       Daniel Calvelo Aros
       Jachym Cepicky
       Markus Metz, Germany
       Anna Kratochvilova, Czech Technical University in Prague, Czech Republic
       Vaclav Petras, Czech Technical University in Prague, Czech Republic
       Icons created by SVN)

       $Date: 2013-05-01 18:35:55 -0700 (Wed, 01 May 2013) $

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