Help to Re-Project Map Layers on the Fly

[Ed McNierney]

Dan -
 
PROJECTION
    proj=lcc 
    lat_1=70.0 
    lat_2=50.0
    lat_0=0.0 
    lon_0=-110.0 
    x_0=0.0 
    y_0=0.0 
    ellps=clrk66 
    datum=NAD27 
END
 
looks about right.  Remember that you will need PROJECTION blocks for
the OTHER layers and for the top-level map file to accurately describe
the other inputs (if any) and the map image output projections as being
lat/lon.
 
     - Ed
Ed McNierney
President and Chief Mapmaker
TopoZone.com / Maps a la carte, Inc.
73 Princeton Street, Suite 305
North Chelmsford, MA  01863
ed at topozone.com
(978) 251-4242 

 
________________________________

From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On
Behalf Of Dan Barron
Sent: Wednesday, February 02, 2005 2:37 PM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: [UMN_MAPSERVER-USERS] Help to Re-Project Map Layers on the Fly


Hello,

I am looking for a little help to re-project a map layer to LAT/LON for
a single layer.  Below is the <shapefile>.prj file - how do I define
this projection in the layer object of the map file?


PROJCS["unnamed",
GEOGCS["unnamed",DATUM["D_unnamed",SPHEROID["Clarke-1866",6378206.4,294.
978698213901]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433]],
PROJECTION["Lambert_Conformal_Conic"],
PARAMETER["standard_parallel_1",70],
PARAMETER["standard_parallel_2",50],
PARAMETER["latitude_of_origin",0],
PARAMETER["central_meridian",110],
PARAMETER["false_easting",0],
PARAMETER["false_northing",0],
UNIT["METER",1]]


Thanks,

Dan Barron 
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