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Thread: Importing DWG from Autocad to ArcGIS

  1. #1
    Richard Overy
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    Default Importing DWG from Autocad to ArcGIS

    I am trying to import a dwg file created in Autocad into Arc 9.2, can anyone offer any advice or even better suggest a tool which may help with the import?

    Thanks

  2. #2
    John Sobetzer

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    Default Re: Importing DWG from Autocad to ArcGIS

    I think the recommended method is to use Conversion Tools - To Geodatabase - Import from CAD. I like adding the dwg to ArcMap and exporting the line layer (usually) to shapefile, since that creates a field in the shapefile that distinguishes the different drawing layers.

    I would suggest that you first make sure your dwg is properly projection defined, which creates a prj file. It seems to me most engineers and quite a few surveyors never provide a projection definition to their dwgs, which often requires contacting them IF it even has one. If it has one but you can't contact them, you can try different data frame coordinate systsems until it lines up with some properly projection defined layers in ArcMap, and then use that definition. If it wasn't created in a coordinate system then you will need to georeference the dwg. See Georeferencing CAD data.

  3. #3
    Fall Troy
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    Default Re: Importing DWG from Autocad to ArcGIS

    I would also suggest that your autocad guy exports the file in a version that Arc 9.2 can read. AutoCad just released their new version of software that if exported to a dwg, 9.2 will not read. They would have to save down a verison down so to speak. Can't tell you how many times we've run into that issue from different vendors.

  4. #4
    Richard Overy
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    Smile Re: Importing DWG from Autocad to ArcGIS

    Thank you Falltroy and John your advice is much appreciated.

    If only I could convince our Engineers to use Arc, life would be so much easier!

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