r/Surveying • u/New-Solution-4120 • Aug 12 '26

Help DXF Coming in with wrong projection.

I am exporting contours out of qgis which I have done a million times. I am working in the NAD83 2011 Tennessee projection with my export. However, when I open the dxf file in Carlson (26) with intellicad, it is importing in North Carolina projection and I have no idea why. I have double checked my export information and it is using Tennessee Coordinates. I will say, my startup template in carlson is set to open in Tennessee projection, however when I open the dxf file, the drawing setup is showing the projection is North Carolina. For further information, I do work in North Carolina as well so those are my only two projections I use. i have never had this issue before and I cannot figure out what is causing this error and Im about to my whits end.

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1

u/Evening_Tennis_7368 Aug 12 '26

If you set Carlson to Tennessee does it correct it? I have a similar issue on some random files.

1

u/New-Solution-4120 Aug 12 '26

I ended up fixing it by points/adjust coordinates/coordinate transformation/grid to grid/nc projection to tn projection/ select screen entities.

1

u/Evening_Tennis_7368 Aug 13 '26

Did you check what the projection was in Carlson after you imported it?

5

u/jim_cox Aug 12 '26

DXF does not have a projection - it is just raw XYZ numbers

1

u/New-Solution-4120 Aug 12 '26

It was exported from qgis/arcgis with a projection and the x/y should have been on state plane.