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Oregon Digital Ortho Quad (DOQ) 1 Meter Black and White MrSid Compressed Oregon Lambert Projection: PROJECTION LAMBERT /* Lambert Conformal Conic DATUM NAD83 /* North American Datum 1983 SPHEROID GRS1980 /* Required spheroid with NAD83 UNITS 3.28084 /* International Feet, (.3048 meters) PARAMETERS 43 00 00.000 /* 1st standard parallel 45 30 00.000 /* 2nd standard parallel -120 30 0.000 /* central meridian 41 45 0.000 /* latitude of projection's origin 400000.00000 /* false easting (meters), (1,312,335.958 feet) 0.00000 /* false northing (meters) US Survey foot = 1200/3937 meters (0.3048006096 m) International foot = 0.3048 m exactly, 1 meter = 3.28084 Intl. feet The images are in MrSid format. Some GIS software uses the .sid file for geo-referencing but some packages need the .sid and the .sdw file for geo-referencing. The .txt file for each quad is created by the MrSid software and describes the compression process. Free viewing software may be found at: http://www.lizardtech.com. |
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