AutoCAD Civil 3D General Discussion

AutoCAD Civil 3D General Discussion

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Contributor
sdowden
Posts: 14
Registered: ‎08-27-2007
Message 1 of 12 (7,461 Views)

PDF explode

7461 Views, 11 Replies
03-23-2011 10:05 AM

Anyone know how to explode a PDF in Autocad Civil3D 2011?  I need to be able to manipulate the PDF by removing parts and drawings new sections.

Thanks.

Product Support
Jason.Hickey
Posts: 336
Registered: ‎06-06-2010
Message 2 of 12 (7,459 Views)

Re: PDF explode

03-23-2011 10:07 AM in reply to: sdowden

You can't explode a PDF, it's a raster-based format. There are third party programs out there that will convert PDF's to DWG's, but the process tends to be ugly at best. Google PDF to DWG for more info.



Jason Hickey
Premium Services Specialist
Autodesk, Inc.

Contributor
sdowden
Posts: 14
Registered: ‎08-27-2007
Message 3 of 12 (7,456 Views)

Re: PDF explode

03-23-2011 10:09 AM in reply to: sdowden

Thanks.  I thought I was told at AU there was a way to do it.  Oh well.  Thanks for the info.

Mentor
civilspace
Posts: 249
Registered: ‎08-19-2010
Message 4 of 12 (7,411 Views)

Re: PDF explode

03-23-2011 01:26 PM in reply to: sdowden

It's not exclusively raster-based.  Try plotting a drawing to PDF, and then adding it to a fresh drawing as an xref.  Now, try to draw a line using endpoint snap from one of the lines inthe PDF.  Magic?  No, it's the vector component of PDFs. 

 

So, given that, there *should* be a way to explode.

Regards,
Anthony
*Expert Elite*
neilyj
Posts: 3,989
Registered: ‎08-01-2008
Message 5 of 12 (7,404 Views)

Re: PDF explode

03-23-2011 01:33 PM in reply to: sdowden

The snaps depend on the origin of the pdf - dwg to pdf will allow snaps but a pdf derived from a scan for example will not have vector information..

neilyj
(No connection with Autodesk other than using the products in the real world)


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*Expert Elite*
Murph
Posts: 2,092
Registered: ‎11-13-2006
Message 6 of 12 (7,397 Views)

Re: PDF explode

03-23-2011 01:59 PM in reply to: sdowden

If you have Raster Design you can take a snapshot of it then paste as an image into AutoCAD and use RD to edit.

Murph
Supportting the troops daily.
Distinguished Mentor
TerryDotson
Posts: 515
Registered: ‎06-06-2010
Message 7 of 12 (7,394 Views)

Re: PDF explode

03-23-2011 02:11 PM in reply to: sdowden

Take a look at DotSoft's PdfImport, it will import the contents of the PDF.

Mentor
civilspace
Posts: 249
Registered: ‎08-19-2010
Message 8 of 12 (7,384 Views)

Re: PDF explode

03-23-2011 02:30 PM in reply to: TerryDotson

Of course it depends on the source; the PDF is a container which can hold compressed raster and vector.  The thing is AutoCAD is already recognizing the vectors (this surprised me greatly the first time my snaps took to it).  Therefore the only reason we cannot currently "explode" (bind/burst) the PDF appears to be down to autodesk limiting the functionality. What we have is a block/group that prevents exploding.

 

Is this a security matter?  Possibly.  The vector output of linewidth in a PDF usually results in two endpoints at each end in order to represent the thickness.  Text is *often* exploded to paths.  Sometimes, lines are simplified (generalized in compression).  Curves are broken into segments, which in the wrong hands could imply certainty about the accuracy of the data.

 

My guess is that the explode/import functionality is being shelved until they can resolve the matter of ownership/security.  When you can create a vector PDF and choose for it to unexplodable, then we might see the functionality appear (but there's still an incredible wealth of drawings in PDF form that will be insecure)

Regards,
Anthony
Distinguished Mentor
michael.robertson
Posts: 604
Registered: ‎03-18-2008
Message 9 of 12 (7,344 Views)

Re: PDF explode

03-24-2011 03:53 AM in reply to: sdowden

Adobe Illustrator can convert vector based pdf files into DWG and DXF format.

Mike Robertson
FL. Dept. of Transportation
CADD Applications Developer
Mentor
civilspace
Posts: 249
Registered: ‎08-19-2010
Message 10 of 12 (7,314 Views)

Re: PDF explode

03-24-2011 01:28 PM in reply to: sdowden

As long as we've moved onto work-arounds:

 

Inkscape is a free open-source alternative to Illustrator.  http://inkscape.org/

 

Just open the PDF, and save as DXF.

Regards,
Anthony
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