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GRASS 4.1 U.S. Army CERL 4 <br /> g.region <main> GRASS Reference Manual <main> g.region <br /> current geographic region, and then lets the user edit <br /> the current geographic region. <br /> Note: geographic region definition files may be <br /> selected from other mapsets as well, if accessible and <br /> in the user's mapset search path. <br /> 4 Set current geographic region from a raster (cell) map layer <br /> Allows the user to select a raster map layer, copies <br /> the cell header for this map layer to the current <br /> geographic region, and then lets the user edit the <br /> current geographic region. This option is useful when <br /> subsequent GRASS operations will be used to produce a <br /> raster map layer from one input raster map layer and it <br /> is necessary that the result coincide with the input <br /> raster map layer. <br /> 5 Save the current geographic region (window) in the data base <br /> Allows the user to save the current geographic region <br /> settings in the user's data base of such settings. <br /> These files are stored in the windows directory under <br /> the user's current mapset. This option is useful when <br /> the current geographic region is set directly using <br /> option 2, or even by another GRASS program (e.g., <br /> d.display). This option installs an otherwise <br /> temporary geographic region setting into the geographic <br /> region definition data base for recall when needed. <br /> 6 Create a new data base geographic region setting <br /> Creates a new geographic region definition in the <br /> user's data base of such settings in the windows <br /> directory under the current mapset, using the <br /> geographic region edit prompt described above. After <br /> the geographic region definition is created, the user <br /> is asked if this geographic region setting should also <br /> be used as the current geographic region. <br /> 7 Modify a data base geographic region setting <br /> Modifies a geographic region setting (in the data base <br /> of such settings in the windows directory of the <br /> current mapset), using the geographic region edit <br /> prompt. After the changes have been made, the user is <br /> asked if this geographic region setting should also be <br /> used as the current geographic region. <br /> NON-INTERACTIVE PROGRAM USE <br /> Alternately, the user can modify the settings of the current <br /> geographic region by specifying all needed parameters on the <br /> command line. The user enters the command g.region parms, <br /> where parms are the following parameters and/or flags: <br />Page 18 <br />01/03/97 2.03-02 - Lange <br />