I'm currently working with a CAD file and importing it into GIS. I was able to upload the .dwg file into GIS, but it seems the projection is off. The file in California, and it ends up in the Arabian Sea... I've checked my coordinates and projections, and it seems to all be WGS_1984_Web_Mercator_Auxiliary_Sphere. The ESRI support docs indicate that correct positioning "may require an optional coordinate transformation information (WLD file) to identify how the coordinates in the CAD data should be positioned on the earth's surface." Could this be what I am missing or do I need to use the Project tool or something like it?
If they are geolocated what is missing is the spatial reference - the XYs are OK, but there is no spatial reference label on the dataset. If the map is set to the same spatial reference as the data, you'll see things plot in the right place.
Either you need to add a projection label (assuming your CAD file has XY coordinates that conform to a known coordinate system) using the Define Projection tool, or the file is in local xy coordinates and you need to add georeferencing to map it to a known coordinate system. This requires some known mapped locations on your CAD file to be used as links.
ArcGIS Pro Help: Georeference CAD data
Question : How did you get these files ? Did you got them from the City of Los Banos ?
I get the same issue as well. I create a model in Sketchup, geolocate it in sketchup, and then export as a DWG.
When I bring it into Pro it ends up 1,500 miles away.
Anyone know what spatial reference Sketchup uses? I dont think it has that option to choose....
This book is a great resource for georeferencing issues with any kind of dataset, including CAD files:
Lining Up Data by @MargaretMaher (Esri Press)
also see Several years ago Margaret Maher published a great reference for lining up data in ArcGIS. My question is there any guidance on creating a projection file for ACAD polylines (dwg) for ArcGIS Pro 2.2?
Thank you for the help. I was told that the CAD file is on coordinates and is using the California Coordinate System (CCS) - NAD83 California State Planes, Zone III, US Foot but I do not see this specific option in the coordinate system list (so I just choose NAD 1983) and still cannot make this work. Do I not need to use the CAD georeferencing tool?
But how do you do this? Is there a step by step approach? I have been told that the CAD layer is in California Coordinate System (CCS) - NAD83 California State Planes, Zone III, US Foot?
I see it there but then what?
I ended up using the .prj file and importing a new coordinate system. Thank you!
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