[mapserver-users] advice needed: where to start getting layers reprojected?

Alex Rice alex_rice at arc.to
Wed Jul 31 14:12:12 PDT 2002


This is very much a newbie question. I know very little about 
projections. I don't really know how to read the headers of the 
ogrinfo output. I have printed out the OpenGIS Well Known Text 
spec. and intend to read it. However, I am wondering if someone 
could give me some suggestions for how to get these layers 
rendered on the same output. Thanks in advance.

The first layer looks like this from ogrinfo:
Layer name: HS
Geometry: Polygon
Feature Count: 16
Extent: (-107.204084, 34.578215) - (-105.393824, 36.002420)
Layer SRS WKT:
GEOGCS["unnamed",
     DATUM["MIF 0",
         SPHEROID["WGS 84 (MAPINFO Datum 0)",6378137.01,298.257223563],
         TOWGS84[0,0,0,0,0,0,0]],
     PRIMEM["Greenwich",0],
     UNIT["degree",0.0174532925199433]]
...

The second layer looks like this from ogrinfo:
Layer name: cityplus
Geometry: Line String
Feature Count: 35277
Extent: (1412844.998580, 1434331.377771) - (1576885.740347, 
1535185.499553)
Layer SRS WKT:
PROJCS["unnamed",
     GEOGCS["unnamed",
         DATUM["North_American_Datum_1983",
             SPHEROID["GRS 80",6378137,298.257222101],
             TOWGS84[0,0,0,0,0,0,0]],
         PRIMEM["Greenwich",0],
         UNIT["degree",0.0174532925199433]],
     PROJECTION["Transverse_Mercator"],
     PARAMETER["latitude_of_origin",31],
     PARAMETER["central_meridian",-106.25],
     PARAMETER["scale_factor",0.9999],
     PARAMETER["false_easting",499999.9843516],
     PARAMETER["false_northing",0],
     UNIT["U.S. Foot",0.3048006]]
...


Alex Rice, Software Developer
Architectural Research Consultants, Inc.
alex_rice at arc.to
alrice at swcp.com





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