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CRDSS_Task2-03-2_ConversionOfArcInfoCoveragesToGRASS
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CRDSS_Task2-03-2_ConversionOfArcInfoCoveragesToGRASS
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Last modified
9/25/2011 10:18:46 AM
Creation date
6/3/2008 1:51:45 PM
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Decision Support Systems
Title
CRDSS Task 2.03-02 - Conversion from Arc/Info Coverages to GRASS
Description
This Task Memoranda will describe the process of converting Arc/Info coverages to GRASS for use in individual CRDSS models.
Decision Support - Doc Type
Task Memorandum
Date
1/3/1997
DSS Category
GIS
DSS
Colorado River
Basin
Colorado Mainstem
Contract/PO #
C153658, C153727, C153752
Grant Type
Non-Reimbursable
Bill Number
SB92-87, HB93-1273, SB94-029, HB95-1155, SB96-153, HB97-008
Prepared By
Riverside Technology inc.
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GRASS 4.1 U.S. Army CERL 1 <br /> g.region <main> GRASS Reference Manual <main> g.region <br /> ------------------------------------------------------------ <br /> | REGION FACILITY | <br /> | LOCATION: sample MAPSET: grass | <br /> | | <br /> | CURRENT REGION: N=5167600 S=5156755 RES=50 ROWS=216 | <br /> | E=729314 W=705924 RES=50 COLS=467 | <br /> | PROJECTION: 1 (UTM) | <br /> | ZONE: 13 | <br /> | | <br /> | | <br /> | Please select one of the following options | <br /> | | <br /> | Current Region Region Database | <br /> | | <br /> | 1 Modify current region 6 Save current region in | <br /> | directly the database | <br /> | | <br /> | 2 Set from default region 7 Create a new region | <br /> | | <br /> | 3 Set from a database 8 Modify an existing region | <br /> | region | <br /> | | <br /> | 4 Set from a raster map | <br /> | | <br /> | 5 Set from a vector map | <br /> | | <br /> | RETURN to quit | <br /> ------------------------------------------------------------ <br /> DEFINITIONS <br /> Region: <br /> Here, a region refers to a geographic area with some <br /> defined boundaries, based on a specific map coordinate <br /> system and map projection. Each region also has <br /> associated with it the specific east-west and north- <br /> south resolutions of its smallest units (rectangular <br /> units called "cells"). <br /> The region's boundaries are given as the northernmost, <br /> southernmost, easternmost, and westernmost points that <br /> define its extent. The north and south boundaries are <br /> commonly called northings, while the east and west <br /> boundaries are called eastings. <br /> The region's cell resolution defines the size of the <br /> smallest piece of data recognized (imported, analyzed, <br /> displayed, stored, etc.) by GRASS programs affected by <br /> the current region settings. The north-south and <br /> east-west cell resolutions need not be the same, thus <br /> allowing non-square data cells to exist. <br /> Default Region: <br />Page 15 <br />01/03/97 2.03-02 - Lange <br />
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