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NAME

       d.zoom   - Allows the user to change the current geographic region settings interactively,
       with a mouse.

KEYWORDS

       display

SYNOPSIS

       d.zoom
       d.zoom help
       d.zoom  [-fphjr]  rast=string[,string,...]   [vector=string[,string,...]]     [zoom=float]
       [--verbose]  [--quiet]

   Flags:
       -f
           Full menu (zoom + pan) & Quit menu

       -p
           Pan mode

       -h
           Handheld mode

       -j
           Just redraw given maps using default colors

       -r
           Return to previous zoom

       --verbose
           Verbose module output

       --quiet
           Quiet module output

   Parameters:
       rast=string[,string,...]
           Name of raster map

       vector=string[,string,...]
           Name of vector map

       zoom=float
           Magnification: >1.0 zooms in, <1.0 zooms out
           Options: 0.001-1000.0
           Default: 0.75

DESCRIPTION

       d.zoom  allows  the  user  to  interactively adjust the settings of the current geographic
       region using a pointing device such as a mouse.   Like  g.region,  d.zoom  re-defines  the
       settings  of the geographic region.  However, d.zoom allows the user to change the current
       region settings interactively, by either outlining the new region perimeter with a  mouse,
       unzoom or pan the region. The graphics display is updated by the module.

       After  the  user  types  the  command d.zoom a mouse-button menu will appear directing the
       user.

       Additionally the region settings can be modified by running g.region.

NOTES

       Although it is not necessary that the user display a  map  in  the  active  display  frame
       before  running  d.zoom,  it  is  helpful  to  do  this  for reference. Using parameter -f
       integrate a pan function, -h  facilitates the use for handhelds.

SEE ALSO

       d.erase
       d.rast
       d.vect
       g.region

AUTHOR

       Michael Shapiro, U.S. Army Construction Engineering Research Laboratory
       Improvements by Huidae Cho and Markus Neteler

       Last changed: $Date: 2004-08-05 14:53:21 +0200 (Thu, 05 Aug 2004) $

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       © 2003-2010 GRASS Development Team