[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.



More information about the postgis-users mailing list