[postgis-users] What SRID is the USGS 24k Quad Grid?

[Obe, Regina]

 Mike,

Thanks.  I wasn't quite sure why it didn't look like degree data.  I
must have been looking in a really small text window.  I'll try both
then.

Thanks again,
Regina



-----Original Message-----
From: postgis-users-bounces at postgis.refractions.net
[mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of
Michael Fuhr
Sent: Monday, October 30, 2006 9:27 AM
To: lr at paragoncorporation.com; PostGIS Users Discussion
Subject: Re: [postgis-users] What SRID is the USGS 24k Quad Grid?

On Mon, Oct 30, 2006 at 03:34:40AM -0500, Paragon Corporation wrote:
> No that didn't work. The actual data is not in degrees.  I think its 
> in meters of some sort, but not sure which one.  My fear is that its 
> more than one SRID like it's a set of UTM ones and so I would have to 
> change my SRID for each slice as the UTM zone changes.

Which data are you downloading?  I looked at "USGS 24K Quad Grid
(2 MB, SHP format)":

ftp://download1.geocomm.com/sd2/usgs_24kgrid.zip

That data is indeed in degrees:

% shp2pgsql -w 24kgrid.shp test
[...]
INSERT INTO "test" ("name","state","lat","long","mrc",the_geom) VALUES
('(ALL WATER)','WA','47.750','-124.625','47124-G6',
GeometryFromText('MULTIPOLYGON(((-124.75 47.75,-124.75 47.875,-124.625
47.875,-124.625 47.75,-124.75 47.75)))',-1) );

--
Michael Fuhr
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