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Reading and IFC-file, reproject it and write back to new IFC-file

  • March 16, 2025
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rmpayaby
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I am reading an IFC-file using a FeatureReader with the following configurations:

 

I am using the <Generic> port to connect it to a Reprojector-transformer. After reprojecting it, I want to use a FeatureWriter and write it as a new IFC-file. I am however stuck on how I should set up the FeatureWriter. I have managed to get a new IFC-file, but the file size is quite small.

 

I am interested in automating the process, and want the FeatureReader to accept any types of IFC-files. Any tips on how I can solve this?

Best answer by daveatsafe

Hi ​@rmpayaby,

The old IFC reader/writer in FME does not read or write coordinate systems, but for a simple reprojection round-trip, I think the following might work:

 

I am attaching the workspace for you. The source and destination coordinate systems will need to be set in the CsmapReprojector, and the the IfcMapConversionWriter will need to be configured to set the proper coordinate system on the output IFC file.

We are working hard on getting the new IFC writer ready for FME 2025.1. When paired with the new IFC reader, this should make round-trip reprojection a lot better.

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    • March 25, 2025

    Hi ​@rmpayaby,

    The old IFC reader/writer in FME does not read or write coordinate systems, but for a simple reprojection round-trip, I think the following might work:

     

    I am attaching the workspace for you. The source and destination coordinate systems will need to be set in the CsmapReprojector, and the the IfcMapConversionWriter will need to be configured to set the proper coordinate system on the output IFC file.

    We are working hard on getting the new IFC writer ready for FME 2025.1. When paired with the new IFC reader, this should make round-trip reprojection a lot better.

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