[Mapserver-users] Projecting NAD83 to County Coordinates

[Mike Juvrud]

How to use layers with different projections (NAD83 & County
Coordinates)?
I would like to display using County Coordinates.

Could someone provide me an example or suggestions to either project the
layers on-the-fly or do some sort of projection conversion.

I have 2 shapefile layers:
"parcel.shp" (County Coordinates - Minnesota, Douglas County)
"roads.shp" (NAD83 - UTM ZONE 15N)

Here are the projection file (.PRJ) contents for each layer:

*** PARCEL.PRJ ***
PROJCS["Douglas County",GEOGCS["DOUGLAS
COUNTY",DATUM["CUSTOM",SPHEROID["CUSTOM",6378518.001,298.257226059909]],
PRIMEM["GREENWICH",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["L
ambert_Conformal_Conic"],PARAMETER["False_Easting",500000.0],PARAMETER["
False_Northing",100000.0],PARAMETER["Central_Meridian",-96.05],PARAMETER
["Standard_Parallel_1",45.8],PARAMETER["Standard_Parallel_2",46.05],PARA
METER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",45.758888888888
89],UNIT["Foot_US",0.3048006096012192]]

*** ROADS.PRJ ***
PROJCS["NAD_1983_UTM_Zone_15N",GEOGCS["GCS_North_American_1983",DATUM["D
_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIM
EM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Trans
verse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_No
rthing",0.0],PARAMETER["Central_Meridian",-93.0],PARAMETER["Scale_Factor
",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

Will Sum,
Mike Juvrud
www.mudlabs.com

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