Export to pdf yields wrong dimensions

[Mats_Knutsson]

Hi,
It's small but however I don't understand where the "clutter" comes from.
/Mats

[Barry Kelly]

Is it because of the round end to lines in Archicad?


Barry.

[Mats_Knutsson]

Barry wrote:
Is it because of the round end to lines in Archicad?


Barry.

I sincerely hope not. I've sent it to our local rep support.

[Anonymous]

Mats,
PDF exported for Archicad is typically more accurate than that exported from Autodesk products, whenever I check a PDF in Bluebeam from Archicad they dimension correctly but from either AutoCAD or Revit there is a small discrepancy (up to about 1mm / meter)

Scott

[Mats_Knutsson]

sboydturner wrote:
Mats,
PDF exported for Archicad is typically more accurate than that exported from Autodesk products, whenever I check a PDF in Bluebeam from Archicad they dimension correctly but from either AutoCAD or Revit there is a small discrepancy (up to about 1mm / meter)

Scott

Good but doesn't help me 😉

[Erwin Edel]

Isn't this the result of scaling something to a papersize (assuming you are measuring something on a PDF with other software)?

Somewhere in the magic of DPI, PDF file format etc etc something gets lost?

Something like IFC or DWG should yield better result for 3rd parties checking dimension etc

[Mats_Knutsson]

Erwin wrote:
Isn't this the result of scaling something to a papersize (assuming you are measuring something on a PDF with other software)?

Somewhere in the magic of DPI, PDF file format etc etc something gets lost?

Something like IFC or DWG should yield better result for 3rd parties checking dimension etc

yes pdf...which is what we use more and more. Clever programs should have the ability round numbers. Just curious where this comes from . No answer from GS support yet.

[Erwin Edel]

For what it's worth: I notice the same issues when exploding a vector PDF in Archicad: the dimensions are no longer 100% accurate. I assume it has to do with changing things from a 1:1 scale to a 'grid' of 300 dpi (or whatever setting your PDF uses) on the page size.

I'm not sure if there is much that can be done about it on the Archicad side of things.

[DGSketcher]

As Erwin said there is a translation to PDF compromise. I frequently have to work from vector PDFs and rely where possible on the displayed dimensions. In my experience you cannot rely on the PDF vectors which will always have potential errors. If you want to share reliable 2D data save the view to DWG, (until GS sort out reading PMK files in different versions of AC. ).

[Mats_Knutsson]

DGSketcher wrote:
As Erwin said there is a translation to PDF compromise. I frequently have to work from vector PDFs and rely where possible on the displayed dimensions. In my experience you cannot rely on the PDF vectors which will always have potential errors. If you want to share reliable 2D data save the view to DWG, (until GS sort out reading PMK files in different versions of AC. ).

It's more a general question concerning all users of pdf's. Have to live with it I guess. The use of pdf's in digital apps is booming while we print much less. Mega-pdf + Dalux/Streambim/similar is the way to go..."paperless" projects.