[Proj] request help with Lambert Conic Conformal (2SP)

Carl Godkin cgodkin at gmail.com
Wed Aug 15 22:29:50 EST 2012

On Wed, Aug 15, 2012 at 8:00 PM, Rick Graves <gravesricharde at yahoo.com>wrote:

> Hey,
> The good news is that Oregon is the last one I need to get working.  The
> bad news is I do not have it working yet.
> Here is the metadata from the .prj that I got from the state:
> PROJCS["NAD_1983_Oregon_Statewide_Lambert_Feet_Intl",
> 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",1312335.958005249],
> PARAMETER["False_Northing",0.0],
> PARAMETER["Central_Meridian",-120.5],
> PARAMETER["Standard_Parallel_1",43.0],
> PARAMETER["Standard_Parallel_2",45.5],
> PARAMETER["Latitude_Of_Origin",41.75],
> UNIT["Foot",0.3048]],
> VERTCS["NAD_1983",
> DATUM["D_North_American_1983",
> SPHEROID["GRS_1980",6378137.0,298.257222101]],
> PARAMETER["Vertical_Shift",0.0],
> PARAMETER["Direction",1.0],
> I initialized proj as follows:
> proj +proj=lcc +lon_0=-120.5 +lat_0=41.75 +lat_1=43.0 +lat_2=45.5
> +x_0=1312335.958005249 +y_0=0.0 +units=ft
> I assume something is not right.
I think there are two things wrong:
1. Your false easting is here given in feet while I believe proj always
wants meters.  The number is about 400000m.  (See
2. You didn't include an ellipsoid or datum so I'm surprised that proj
worked at all since I get an error without +datum=NAD83 or +ellps=GRS80.

However, correcting both of those, I get  X=2344859.57 ft, Y=1434192.31 ft,
which isn't what you want either.

Now I want to know what I am missing!  Let's hope someone cleverer than me

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.maptools.org/pipermail/proj/attachments/20120815/f591e3cd/attachment.htm 

More information about the Proj mailing list