If you are using Arc/Info format data, but do not have Arc/Info, and are not sure of the projection information there is a simple way to check. In the subdirectory where all the files for a coverage are located, there is a .prj file. Simply type the file to look at it on a the screen, or use a text editor to view it. A sample is located below. Even if you have metadata for the file, you might want to do this to verify the information.
This file may not exist for all ArcInfo data; it does depend on how the creator of the coverage did their processing.
Projection LAMBERT
Datum NAD83
Zunits NO
Units METERS
Spheroid GRS1980
Xshift 0.0000000000
Yshift 0.0000000000
Parameters
45 0 0.000 /* 1st standard parallel
49 0 0.000 /* 2nd standard parallel
-109 30 0.000 /* central meridian
44 15 0.000 /* latitude of projection's origin
600000.00000 /* false easting (meters)
0.00000 /* false northing (meters)
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Keywords=GIS, data, metadata, steering, standards
Last Modified January 08, 2001 10:22 AM