Ubuntu Manpage: d.m - Display manager for GRASS

NAME

       d.m  - Display manager for GRASS

KEYWORDS

SYNOPSIS

       d.m
       d.m help
       d.m  [dmrc=string]   [--verbose]  [--quiet]

   Parameters:
       dmrc=string
           Name of .dmrc settings file

DESCRIPTION - GIS MANAGER

The d.m Tcl/Tk GIS manager GUI has been replaced by gis.m. The d.m code is now
UNMAINTAINED and OBSOLETE and left here as a courtesy to legacy users. The gis.m GUI is
soon to be replaced by a new wxPython based GUI.

The GRASS GIS Manager provides an interactive graphical interface to GRASS commands. By
default, it is started automatically with each GRASS session. The GIS Manager can be quit
by selecting the 'File->Exit ' menu item. The GIS Manager can be restarted from the GRASS
command line shell by typing "d.m &".
The GIS Manager includes a set of pull-down menus for many GIS functions (analysis, file
I/O, GIS configuration and management), two rows of buttons that control display
functions, an upper window in which layers to display are organized, a row of display
monitor control buttons along the left side of the layer tree window, and a lower window
which contains options panels for layers in the layer tree.
The top row of buttons control a series of display functions: displaying or redisplaying
all map layers in the default monitor window, zooming and panning, simple queries,
starting NVIZ (n-dimensional visualization) or XGANIM (display animator) display
interfaces, and saving or opening group display file. The second row of buttons add, copy,
or remove map layers to be displayed, and activate the raster and vector digitizing
interfaces. Mouse-over help is available for all buttons.
Map layers are organized as a layer tree, in the window below the buttons. Layers can
include raster and vector maps, text, map enhancements (scale and north arrow, grids, and
frames), and commands (where any GRASS command be written). Layers are displayed in the
order added to the layer tree: the first added (i.e., at the top of the tree) is displayed
first, followed by the next added, etc. This means that the uppermost layer is 'on the
bottom' and the lowermost is 'on top' if layers are thought of as a series of stacked
overlays. Any layer can be renamed by double clicking on its name and typing a new name.
The check box to the left of each layer makes it active for display. Active layers are
only displayed/redisplayed when the display button is pressed. Layers can be organized
into groups; entire groups can be activated or deactivated for display. Groups can be
saved to a file and opened in subsequent sessions, restoring all layers and their display
options.
When a layer is selected with the mouse, its options are shown in the panel below the
layer tree window. Help for each layer type can be accessed by pressing the GRASS button
in the option panel.
The monitor buttons along the left side of the layer tree window open or select (if
already open) one of seven display monitors (named x0-x6). Layers are be displayed in the
currently selected monitor. If no monitor is open and selected, map layers will be
displayed in monitor x0.

BUTTON FUNCTIONS (top row)

Display active layers (current region)
Displays all active layers at current resolution and region extents. Monitor x0 will be
started automatically if a monitor is not already open and selected.

Display active layers (default region)
Resets the region to the default resolution and extents, and displays all active layers.
See g.region -d.

Display active layers (saved region)
Opens a dialog to select a saved region setting. Resets the region to the resolution and
extents of the selected saved region, and displays all active layers. See g.region.

Erase to white
Erases the currently selected monitor to a white background; also removes all frames. See
d.frame -e.

NVIZ
Starts the NVIZ, n-dimensional visualization module and interactive graphical interface.
See .

Fly through path for NVIZ
Starts a GRASS module for interactive creation of a fly-through path to be animated in
NVIZ. See d.nviz.

Animate raster map series
Starts the XGANIM interactive interface to display a series of raster maps as an
animation. See .

Zoom
Interactive zooming with the mouse in the active display monitor. Zooming resets the
region extents (both size and location of area displayed). A set of prompts for using the
mouse for zooming will appear in a separate x-terminal. A simple (i.e., non-draped) raster
map or vector map must be active and displayed in the current monitor. If no map is
currently active and displayed, a dialog will appear in which a map can be chosen. See

Return to previous zoom
Resets the region to the layer extents in effect prior to zooming.

Pan and recenter
Interactive selection of a new center of view in the active display monitor. Panning
changes the location of the region extents but not the size of the area displayed. A
simple (i.e., non-draped) raster map or vector map must be active and displayed in the
current monitor for panning to function. See d.zoom -p.

Query map (select map first)
Query selected raster (only the base map of a draped map will be queried), RGB raster map
(all three map channels will be queried), or vector map using the mouse. A map has to be
selected before query. Vector charts and thematic vector maps cannot be queried. The
results of a raster map query will be displayed in a new x-terminal. Depending on the
setting in the vector panel, the results of a vector map query will be displayed in
graphical form window or in a new x-terminal.
The default display mode for vector map queries can also be set with the GRASS environment
variable DM_FORM_MODE.
g.gisenv set=DM_FORM_MODE=txt for displaying vector query results in an x-terminal
g.gisenv set=DM_FORM_MODE=gui for displaying vector query results in a graphical form
window
See d.what.vect.

Measure lengths and areas
Interactive measurement of lengths and/or areas defined with the mouse. An x-terminal
will open with prompts for using the mouse to measure lengths and areas, and display the
results of measurement. Lengths are measured in meters; areas are measured in hectares,
square miles, and square meters. A display monitor must be open and selected, but it is
not necessary to select or display a map in order to measure lengths and areas. See
d.measure.

Geographical position
Interactive identification of geographical position in the coordinate system of the
current location. An x-terminal will open with prompts for using the mouse and display the
xy coordinates of at each mouse click location. See d.where.

Erase all layers and create a new group
Removes all layers in the layer tree and creates a new, empty group to which new layers
can be added.

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

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

Print map
Uses ps.map to print simple raster, vector, and text layers. Currently supported output
formats are Postscript, PDF and PNG. See

BUTTON FUNCTIONS (bottom row)

Add raster layer
Adds a raster map to the layer tree. Raster display options include: displaying a selected
subset of raster cells, defined by their cat values; draping (or "fusing") a second map
over the base map; and displaying legends for the base map and draped map. See d.his (for
draping/fusing).

Add RGB or HIS raster layer
Combines and displays three raster maps defined as red, green, and blue channels; or
combines and displays two or three raster maps defined as hue, intensity, and (optionally)
saturation channels. See .

Add raster legend
Adds a legend for a single raster map to the layer tree. Multiple options for formatting
the legend are available. See d.legend.

Add vector layer
Adds a vector map to the layer tree. A large number of options are available for
displaying the vector map, including: outline and fill color, icon type and size for
points, line widths for all vector types, automatic labeling using an attribute column,
querying cats or attributes to limit vectors displayed, and restricting vector display
depending on region size. See d.vect.

Add thematic charts 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 thematic map layer (for all vector types)
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 vector labels layer (from existing labels file)
Add text layer from a labels file for vector objects created with v.label command
(accessed from the "vector->develop map->create text label file for vector features" menu
item). A labels file can also be created with a text editor. See d.labels.

Add freetype text layer
Adds layer to display a line of freetype text. Options include: text placement by
coordinates (geographic or screen) or mouse; text alignment and rotation, font and line
spacing; and text size, bolding, and color. See d.text.freetype.

Add text layer
Adds layer to display a line of text using default GRASS font (selected with d.text.

Add scalebar and north arrow layer
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.

Overlay grids and lines
Adds layer to display regular grid (for all locations), or geodesic and rhumblines (for
latitude/longitude locations only). Grid options include: grid and border colors, grid
origin, and grid line spacing. Geodesic and rhumbline options include: line color, and xy
coordinates (geographic) of line endpoints. See d.rhumbline.

Create or select display frames
Adds a layer to define (or select predefined) display frame. A display frame is a
rectangular subarea of a display monitor, within which maps can be displayed. All layers
following a frame layer will be displayed within the frame defined in the frame
layer&mdash;until a new frame layer is added and new frame defined/selected. This allows a
single monitor window to be subdivided into multiple frames, each of which can display
different maps, legends, scalebars and north arrows, or other layers. For example, the
monitor could display a detail map and a small frame could display an inset map. See
d.frame.

Add command layer
Adds a layer defined by a GRASS GIS command or command list. For a command list use the
pipe symbol as "|" as separator.

E.g.: d.rast soils | d.rast -o roads | d.vect streams col=blue

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

Duplicate selected layer or group
Adds a new layer that duplicates the selected layer.

Cut selected layer or group
Deletes the selected group or layer.

Digitize raster or vector maps
Starts the raster digitizing or vector digitizing module, depending on whether a raster or
vector map is selected. Raster digitizing always creates a new map. Vector digitizing will
either edit an existing map (if an existing vector map is selected in the layer tree) or
create a new vector map (if the name of the new vector to be created is entered in the
'vector name' field of the options panel for a vector map layer). See v.digit.

AUTHORS

       Radim Blazek, ITC-Irst, Trento, Italy
       Michael Barton, Arizona State University, Tempe, Arizona, USA

       Last changed: $Date: 2008-03-03 21:20:36 -0800 (Mon, 03 Mar 2008) $

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