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Autodesk Software Forum · Autodesk 3D Studio

#DXF RATNEST ???

8 messages in this thread

#96357From: Ken l. ElwoodApr 10, 1994 1:22 AM

Help! I am trying to import a 3D model from MicroStation to 3D Studio. Autocad will read the DXF model fine but 3D Studio gives me an INVALID RATNEST IN DXF error. This occurs in DXFs directly from Microstation and DXFs from Microstation thru AutoCad. I have discovered the problem to be HOLE GROUPS (creating a void) Does anyone know how to solve this problem??? What is an invalid RATNEST??? Thanks, kle

#96362From: John TissavaryApr 10, 1994 3:55 AM

>>INVALID RATNEST IN DXF<< ROFL!!!!!!!!! I don't even want to attempt to figure that one out. Somebody at Autodesk has a really twisted sense of humor, or something <g>! John Tissavary (LUNA cie)

#96385From: Apr 10, 1994 12:19 PM

Ken: An "INVALID RATNEST IN DXF" error is just that, a convoluted mess of pointers in the file. There is no "VOID" in the Autodesk DXF spec (they wrote the spec, theirs should be adhered to by other vendors!) MicroStation has some entities that are not in AutoCAD, one being VOIDs, which simply do not translate. You have to go back into MicroStation and re-model these entities. We came across these items a while ago, and found that writing a DXF file out of MicroStation and reading the file back in immediately generated an "Invalid File" in MicroStation! Not real confidence-building! We stick to AutoCAD! Greg Pyros

#96481From: Ken l. ElwoodApr 11, 1994 4:05 AM

Greg, Thanks for the input. However, I have one question for you. How come AutoCad will read these DXF files with the voids from MicroStation correctly and 3D Studio will not? PS-just out of curiosity, does the AIA stand for Amer. Institute of Architects? ken

#96703From: Apr 12, 1994 10:48 AM

Ken: I don't believe that AutoCAD reads them correctly as voids, it just doesn't give you the error. Yes, AIA is American Institute of Architects, from a past life. Greg Pyros

#96731From: Steven ElliottApr 12, 1994 2:33 PM

Greg, FOR SHAME!! What do you mean, "from a past life"! Once an architect, always an architect. You're just one of the 90% of us who don't actively do architecture anymore <G>. Steven Old architects never die; they just forget where to draw the line.

#96830From: Apr 12, 1994 11:12 PM

Steven: >> Old architects never die; they just forget where to draw the line. Well put! Greg Pyros

#96844From: MARK A. MEIERApr 13, 1994 3:16 AM

<<Old architects never die; they just forget where to draw the line>> <g> – or as the poster on my wall says – Old architects never die; they just change their plans. Mark