[postgis-users] Importing a shape file with NAD83 / Conus Albers

[Javier de la Torre]

Hi all,

I got a shapefile with a .prj file on it. I pasted the contents to http://prj2epsg.org and got that this http://prj2epsg.org/epsg/5070

This srs does not seem to be in PostGIS so I am trying to add it. Now, the first thing I tried was sending it to spatialreference and I got this http://spatialreference.org/ref/sr-org/7178/

But it does not seem to include the proj4text data needed for postgis to do transformations.

I then tried loading it in OGR with Python doing this:

>>> srs = osr.SpatialReference()
>>> wkt = 'PROJCS["NAD83 / Conus Albers",   GEOGCS["NAD83",     DATUM["North American Datum 1983",       SPHEROID["GRS 1980", 6378137.0, 298.257222101, AUTHORITY["EPSG","7019"]],       TOWGS84[1.0, 1.0, -1.0, 0.0, 0.0, 0.0, 0.0],       AUTHORITY["EPSG","6269"]],     PRIMEM["Greenwich", 0.0, AUTHORITY["EPSG","8901"]],     UNIT["degree", 0.017453292519943295],     AXIS["Geodetic longitude", EAST],     AXIS["Geodetic latitude", NORTH],     AUTHORITY["EPSG","4269"]],   PROJECTION["Albers Equal Area", AUTHORITY["EPSG","9822"]],   PARAMETER["central_meridian", -96.0],   PARAMETER["latitude_of_origin", 23.0],   PARAMETER["standard_parallel_1", 29.5],   PARAMETER["false_easting", 0.0],   PARAMETER["false_northing", 0.0],   PARAMETER["standard_parallel_2", 45.5],   UNIT["m", 1.0],   AXIS["Easting", EAST],   AXIS["Northing", NORTH],   AUTHORITY["EPSG","5070"]]'
>>> srs.ImportFromWkt([wkt])
>>>srs.ExportToProj4()

But I get "ERROR 6: No translation for Albers Equal Area to PROJ.4 format is known."

Anybody knows how can I get the PROJ4TEXT from this?

Ideally what I would like is to inspect automatially a shapefile coming with a .prj file, try to find if it is in PostGIS and if not register the proj and import the data using shp2psql.


Thanks for any advice,

Javier.

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