AutoCAD Map 3D General Discussion

AutoCAD Map 3D General Discussion

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yooper_75
Posts: 21
Registered: ‎05-07-2008
Message 1 of 2 (136 Views)
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unknown projection

136 Views, 1 Replies
02-17-2012 11:06 AM

I have .shp files from the State of Michigan that show an unknown projection when importing or connecting with Map. The projection details line up with MI83-OB, so I have been overriding with this selection. Does anyone know of a way to have Map recognize the .prj file that comes with the State data?

 

.prj file:

PROJCS["NAD_1983_Hotine_Oblique_Mercator_Azimuth_Natural_Origin",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["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",-86.0],PARAMETER["Latitude_Of_Center",45.30916666666666],UNIT["Meter",1.0]]

Thanks,

Carl

M3D 2012 and 2013
Win 7 Pro x64
HP 8200 i7 - 16GB RAM
AMD Radeon HD 6350

I have a similar issue with .shp files for the USGS DRG coverages (24k/100k/250k).  I've ended up converting them into .SDF files and now I don't have to set the CS every time.  Although if it's data you use frequently, you can also save the conenction out to a .layer file from display manager.

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thepworth
Posts: 525
Registered: ‎03-02-2011
Message 2 of 2 (127 Views)

Re: unknown projection

02-17-2012 12:59 PM in reply to: yooper_75

I have a similar issue with .shp files for the USGS DRG coverages (24k/100k/250k).  I've ended up converting them into .SDF files and now I don't have to set the CS every time.  Although if it's data you use frequently, you can also save the conenction out to a .layer file from display manager.


C3D 2011
Intel Xeon E5630@2.53Ghz
NVIDA Quadro NVS420 Dual Monitor
12GB Ram / Win7 Professional 64bit SP1
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