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Question

GIS to CAD

  • June 16, 2026
  • 1 reply
  • 18 views

cameraobscura
Contributor
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I notice that when writing GIS to CAD, in this case a KMZ to DGN using FME, that the output often tends to have mismatched units and the scaling is often much smaller in the output. I know that a seed file is ideal but I often find that this doesn’t always solve the problem in FME. Is there any way to make sure that the units are not mismatched when going from GIS to CAD?

1 reply

j.botterill
Influencer
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  • Influencer
  • June 17, 2026

Seed files alone don’t fix the issue here with geometry

I see an issue here using KMZ as the source file. KMZ/KML is decimal degrees, that is the units are degrees and not linear metre units. The destination DGN expects a defined coordinate system and working units typically in metres/millimetres. So going from degree based geometry to metric CAD file everything appears tiny/scaled incorrectly.

Make sure you’re using a Reprojector or CsmapReprojector transformer to convert your data into a projected coordinate system before writing to CAD.

How to convert GIS to CAD while maintaining data quality - FME by Safe Software

It would also help if you could share a screenshot of your workspace, ideally with some features cached and opened in the Feature Information window. If you include that in your post, the community will be able to provide much more targeted advice.