AutoCAD Map 3D General Discussion

AutoCAD Map 3D General Discussion

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Coordinate Transformation problem

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12-12-2012 07:33 PM

I am using the coordinate system CANQ27-M8 in the source DWG and CANQ-M8 in the final DWG. No problem to query objects from the source DWG inside the final DWG

 

I am duplicating the NAD83 datum in the NAD83X (same parameters with a different name). I am referencing this datum (NAD83X) in a new coordinate system CANQ-M8X which is a copy of CANQ-M8 but with NAD83X instead of NAD83. Now it is impossible to query the objects from the source DWG (CANQ27-M8) in the final DWG (CANQ-M8X). Where is the problem because there is no difference between CANQ-M8 and CANQ-M8X save and except the name of the datum?

If you set up a new datum, you'll need a new transform path as well - have you defined that?  Since you are using Canadian CSs, you may need updated GSB files in that process as well.  Check out the help or http://beingcivil.typepad.com/my_weblog/2012/03/coordinate-systems-updated-mostly-canadian-version.html for some pointers.

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Registered: ‎04-25-2008
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Re: Coordinate Transformation problem

12-17-2012 02:05 AM in reply to: pcardinal

If you set up a new datum, you'll need a new transform path as well - have you defined that?  Since you are using Canadian CSs, you may need updated GSB files in that process as well.  Check out the help or http://beingcivil.typepad.com/my_weblog/2012/03/coordinate-systems-updated-mostly-canadian-version.h... for some pointers.



Nate Moore, GISP
Geospatial Premium Support Specialist
Global Services
Autodesk, Sarl
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