AutoCAD Civil 3D General Discussion

AutoCAD Civil 3D General Discussion

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Contributor
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Registered: ‎08-27-2007
Post 1 of 12

PDF explode

7734 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.

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Registered: ‎06-06-2010
Post 2 of 12

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.

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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.

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Registered: ‎08-19-2010
Post 4 of 12

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
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Post 5 of 12

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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Post 6 of 12

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
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Post 7 of 12

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.

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Post 8 of 12

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
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Post 9 of 12

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
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Post 10 of 12

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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