Aren, You need a reference projection, you are correct.
For the sake of the exercise, bookmark http://spatialreference.org/ and then try the search box for parts of the string which are maybe unusual : I tried "Standard_Parallel_1",27.5 Lambert_Conformal_Conic in the search box. then I reckon you can probably choose any of the three results I get - there appears to be very little difference between them and your string. If you haven't used this site before, looking at the Well Known Text as HTML Human-Readable OGC WKT Proj4 OGC WKT JSON GML ESRI WKT .PRJ File options will help. Good luck (from the antipodes, so take your chances) cheers Ben On 09/01/2011, at 3:18 PM, Aren Cambre wrote: > I have a SHP with this in its PRJ file: > > PROJCS["Custom",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",1500000.0],PARAMETER["False_Northing",5000000.0],PARAMETER["Central_Meridian",-100.0],PARAMETER["Standard_Parallel_1",27.5],PARAMETER["Standard_Parallel_2",35.0],PARAMETER["Central_Parallel",18.0],UNIT["Meter",1.0]] > > I need to get this into 3081 somehow since it's a good projection for Texas. > > I have some 3081-reprojected PoistGIS data (originally 4269) for Texas > already. If I load this SHP into QGIS along with other 3081 data, it appears > well below the other data. QGIS indicates this SHP has a custom projection. > > If I am not mistaken, to reproject with PostGIS, I need something besides -1 > in the geometry table. So I guess I need to specify some SRID with -s when I > run shp2pgsql? If so, what projection is this? > > Thanks, and I apologize in advance for my naivety. > > Aren > _______________________________________________ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users
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