<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>GRASS GIS: d.zoom</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <link rel="stylesheet" href="grassdocs.css" type="text/css"> </head> <body bgcolor="white"> <img src="grass_logo.png" alt="GRASS logo"><hr align=center size=6 noshade> <h2>NAME</h2> <em><b>d.zoom</b></em> - Allows the user to change the current geographic region settings interactively, with a mouse. <h2>KEYWORDS</h2> display <h2>SYNOPSIS</h2> <b>d.zoom</b><br> <b>d.zoom help</b><br> <b>d.zoom</b> [-<b>fphjr</b>] <b>rast</b>=<em>string</em>[,<i>string</i>,...] [<b>vector</b>=<em>string</em>[,<i>string</i>,...]] [<b>zoom</b>=<em>float</em>] [--<b>verbose</b>] [--<b>quiet</b>] <h3>Flags:</h3> <DL> <DT><b>-f</b></DT> <DD>Full menu (zoom + pan) & Quit menu</DD> <DT><b>-p</b></DT> <DD>Pan mode</DD> <DT><b>-h</b></DT> <DD>Handheld mode</DD> <DT><b>-j</b></DT> <DD>Just redraw given maps using default colors</DD> <DT><b>-r</b></DT> <DD>Return to previous zoom</DD> <DT><b>--verbose</b></DT> <DD>Verbose module output</DD> <DT><b>--quiet</b></DT> <DD>Quiet module output</DD> </DL> <h3>Parameters:</h3> <DL> <DT><b>rast</b>=<em>string[,<i>string</i>,...]</em></DT> <DD>Name of raster map</DD> <DT><b>vector</b>=<em>string[,<i>string</i>,...]</em></DT> <DD>Name of vector map</DD> <DT><b>zoom</b>=<em>float</em></DT> <DD>Magnification: >1.0 zooms in, <1.0 zooms out</DD> <DD>Options: <em>0.001-1000.0</em></DD> <DD>Default: <em>0.75</em></DD> </DL> <h2>DESCRIPTION</h2> <em>d.zoom</em> allows the user to interactively adjust the settings of the current geographic region using a pointing device such as a mouse. Like <em><a HREF="g.region.html">g.region</a></em>, <em>d.zoom</em> re-defines the settings of the geographic region. However, <em>d.zoom</em> 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. <p> After the user types the command <b>d.zoom</b> a mouse-button menu will appear directing the user. <p> Additionally the region settings can be modified by running <em><a HREF="g.region.html">g.region</a></em>. <h2>NOTES</h2> Although it is not necessary that the user display a map in the active display frame before running <em>d.zoom</em>, it is helpful to do this for reference. Using parameter <b>-f</b> integrate a pan function, <b>-h </b> facilitates the use for handhelds. <h2>SEE ALSO</h2> <em><a HREF="d.erase.html">d.erase</a></em><br> <em><a HREF="d.rast.html">d.rast</a></em><br> <em><a HREF="d.vect.html">d.vect</a></em><br> <em><a HREF="g.region.html">g.region</a></em> <h2>AUTHOR</h2> Michael Shapiro, U.S. Army Construction Engineering Research Laboratory <br> Improvements by Huidae Cho and Markus Neteler <p><i>Last changed: $Date: 2004-08-05 14:53:21 +0200 (Thu, 05 Aug 2004) $</i> <HR> <P><a href="index.html">Main index</a> - <a href="display.html">display index</a> - <a href="full_index.html">Full index</a></P> <P>© 2003-2008 <a href="http://grass.osgeo.org">GRASS Development Team</a></p> </body> </html>
