[postgis-users] Re: SRID for USA_Lambert_Conformal_Conic

Dylan Beaudette dylan.beaudette at gmail.com
Sat Aug 19 17:34:23 PDT 2006

Do you have any of the parameters associated with the Lambert
conformal conic projection? You will need these in order to add an
entry to the spatial_ref_sys table, with a custom SRID.

you can get more information on your original file with a tool like ogrinfo .


On 8/19/06, P Kishor <punkish at eidesis.org> wrote:
> Actually, I should explain this a bit further --
> (a) I had a Shapefile in USA_Lambert_Conformal_Conic that I imported
> into PostGIS using the shp2pgsql, psql dance. Whatever I did, its SRID
> is set to -1.
> (b) I created another dataset from lon/lat explicitly setting its SRID to 4326.
> Of course, now I can't do any geometrical analysis on these two
> because they are in different spatial references. Ideally, I want to
> convert my (b) dataset, the points that are in 4326, to the same srs
> as (a) dataset, namely USA_Lambert_Conformal_Conic.
> Hence my question.
> Many thanks in advance.
> On 8/19/06, P Kishor <punkish at eidesis.org> wrote:
> > This is a topic I know very little about. Where do I learn more about
> > SRIDs, and more specifically,
> >
> > 1. how do I find SRID for USA_Lambert_Conformal_Conic; and
> > 2. use that to change a dataset (project? is that the word wrt SRIDs?)
> >
> --
> Puneet Kishor http://punkish.eidesis.org/
> Nelson Inst. for Env. Studies, UW-Madison http://www.ies.wisc.edu/
> Open Source Geospatial Foundation https://edu.osgeo.org/
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