Michigan georef projection

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Michigan georef projection

Postby celenz » Mon Jul 07, 2008 1:51 pm

Has anyone ever projected into Michigan georef. I have been trying to, using ESRI's CRS (.prj) file which is listed under State Systems in ESRI coordinate systems. For some reason, even though the properties claim it is Michigan georef, it does not place it in the correct place. When I open it in ArcGIS, it should project on the fly to where my other files are. It does not. I am projecting from UTM, and have successfully projected to other systems, such as State Plane, so I don't think I am doing anything wrong in the process. When I project within ArcToolbox using the same file, it projects fine, albeit to a grid, and I need a sid. Can anyone from Michigan give me any hints?
celenz
 
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Location: Michigan

Postby rparker » Thu Jul 10, 2008 8:54 am

Could you please post the source projection and the desired output projection WKTs (text of the projection files)?

This might be resolved by defining the source image projection in feet but I do not have enough information to know for sure.
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Postby celenz » Thu Jul 10, 2008 9:20 am

I am going from the following prj:

PROJCS["NAD_1983_UTM_Zone_16N",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137,298.257222101]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",-87],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0],UNIT["Meter",1]]

To this prj:

PROJCS["NAD_1983_Michigan_GeoRef_Meters",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137,298.257222101]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199432955]],PROJECTION["Hotine_Oblique_Mercator_Azimuth_Natural_Origin"],PARAMETER["False_Easting",2546731.496],PARAMETER["False_Northing",-4354009.816],PARAMETER["Scale_Factor",0.9996],PARAMETER["Azimuth",337.25556],PARAMETER["Longitude_Of_Center",-86],PARAMETER["Latitude_Of_Center",45.30916666666666],UNIT["Meter",1]]

Hope you can help!
celenz
 
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Joined: Mon Jul 07, 2008 1:37 pm
Location: Michigan

Postby Doug Fuller » Thu Sep 11, 2008 7:48 am

I understand that there is a glitch in ESRIs reprojecting to Michigan GeoRef. Try going to this site. They provide many downloads for reprojecting into GeoRef. Good luck. h_t_t_p://w_w_w.michigan.gov/documents/DNR_M ... 0889_7.pdf
Doug Fuller
 
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