[postgis-users] SRID for Lambert Conformal Conic
David Fawcett
david.fawcett at gmail.com
Tue Dec 16 13:44:50 PST 2008
I am looking for the correct SRID to use in PostGIS for some data that
is in LCC.
Here is the ESRI text summary:
Projected Coordinate System: NAD_1983_Lambert_Conformal_Conic
Projection: Lambert_Conformal_Conic
False_Easting: 0.00000000
False_Northing: 0.00000000
Central_Meridian: -97.00000000
Standard_Parallel_1: 33.00000000
Standard_Parallel_2: 45.00000000
Latitude_Of_Origin: 40.00000000
Linear Unit: Meter
Geographic Coordinate System: GCS_North_American_1983
Datum: D_North_American_1983
Prime Meridian: Greenwich
Angular Unit: Degree
This looks to be very similar to LCC WRF, the only difference being
NAD83 vs WGS84. I can't seem to find a SRID for the NAD83 definition.
I am assuming that most people consider these definitions to be close
enough to be the same?! Is anyone aware of a SRID for this
definition, but based on NAD83?
http://spatialreference.org/ref/sr-org/29/
ROJCS["WGC 84 / WRF Lambert",
GEOGCS["WGS 84",
DATUM["World Geodetic System 1984",
SPHEROID["WGS 84",6378137.0,298.257223563,
AUTHORITY["EPSG","7030"]],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0.0,
AUTHORITY["EPSG","8901"]],
UNIT["degree",0.017453292519943295],
AXIS["Geodetic longitude",EAST],
AXIS["Geodetic latitude",NORTH],
AUTHORITY["EPSG","4326"]],
PROJECTION["Lambert_Conformal_Conic_2SP"],
PARAMETER["central_meridian",-97.0],
PARAMETER["latitude_of_origin",40.0],
PARAMETER["standard_parallel_1",33.0],
PARAMETER["false_easting",0.0],
PARAMETER["false_northing",0.0],
PARAMETER["standard_parallel_2",45.0],
UNIT["m",1.0],
AXIS["Easting",EAST],
AXIS["Northing",NORTH]]
Thanks,
David.
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