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(CAD) Coordinate Confusion

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    (CAD) Coordinate Confusion

    I thought I'd got the hang of shared coordinates. I also thought I was done with them - set up the project files from the outset, test them whilst they're lightweight and heavy, tell everyone to leave them the hell alone, and voila!

    But no, you turn your back for a week or three then come back to find models crammed full of dirty linked in .dwg files of our own making (we're not talking recieved consultant files here) - AND an agreed-at-the-last-minute workflow where all drawings from the model get the export-to-.dwg treatment.... and look, the coordinates are all off.

    I despair. :banghead:

    Nonetheless, I need to "fix" what's gone wrong. Although I'm not entirely sure what has gone wrong. In the attached .pdf there is a visual-breakdown of the problem.

    Essentially the principle .dwgs (ie. GRID.dwg) link into the correct place using shared coordinates, but plan exports from the model (with shared coordinates) don't xref vice versa.

    I've tried publishing the model coordinates to the .dwg but that solves nothing... I am reluctant to acquire from the .dwg as I don't trust it (since our 5 models are perfectly fine otherwise).

    Anything glaringly obvious?
    Attached Files

    #2
    Publishing the coordinate to the DWG doesn't tell them where to go. When you published shared coordinates, was it asking you if you wanted to overwrite current coordinate system? If so, did you overwrite or did you create a new System name? Once you create that new system you have to go into the DWG and tell it which system to use.

    I'm not surprised that origin(0,0,0) is not lining up with your shared coordinate system project/site base points. I'm fairly certain that aside from the project and site base points, there is a third origin that is unseen by Revit users. If you want to test this, take a DWG with nothing but an "X" at the origin, and import it Origin to Origin, see where that lines up.

    HTH, but not sure I'm understanding the exact problem correctly (like this is surprising in a shared coordinates thread xD). We'll see where it goes.
    .Carl - Architect, BIM Manager, Father, Husband, Coach, Player, Disc Tosser, Driver... not necessarily in that order.

    Free Revit Chat | Cre8iveThings Blog | Live Architecture! | Past Live Architecture!

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      #3
      Just FYI, for shared cooredinates, I always create a backup (BU_) shared coordinate location in my projects in case someone overwrites the original setup while using Publish/Acquire Shared Coordinates. This way if someone screws something up I can just revert back to the BU coordinates.

      Also, YAY 100 Posts!
      .Carl - Architect, BIM Manager, Father, Husband, Coach, Player, Disc Tosser, Driver... not necessarily in that order.

      Free Revit Chat | Cre8iveThings Blog | Live Architecture! | Past Live Architecture!

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