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PCCC GIS I Exercise 2 (AV9.1) - Locate your car with GPS, map it with GIS v2, Apr 2007 - page 16 / 31

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  • In your open map view, select Window > ArcToolbox. A 3rd window, occupied by the elements of ArcToolbox, appears on the left. Select ArcToolbox > Data Management Tools > Projections and Transformations > Define Projection (dbl-click on the latter):

A Define Projection window appears (below left):

  • Select the folder button for input dataset (red arrow above left), scroll to your

*_county_LL folder (above right); select county_roads.shp; press Add The Define Projection window returns (below) with the county_roads shapefile and a default “assumed” coordinate system, which needs to be changed to Geographic, NAD 1983:

  • Select the button on the RH side of the “Coordinate System” window (red arrow above).

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