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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.

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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