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Autocad LT when exporting to pdf

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Message 1 of 21
Red_Neil
1404 Views, 20 Replies

Autocad LT when exporting to pdf

Hi, when I export to pdf from a viewport, the pdf produced has a 'scratchy', grey quality to it. This seems to be caused by a google map image I have on one layer because if I remove it, the 'scratching' goes. Does anyone know why this might be? Thanks 

20 REPLIES 20
Message 2 of 21
maxim_k
in reply to: Red_Neil

Hi Neil,

I don't see any "'scratching" in the PDF you attached.
Can you clarify what do you mean?

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Maxim Kanaev
Architect
MARSS

MacACAD | Linkedin

Etiquette and Ground Rules of Autodesk Community
Message 3 of 21
Red_Neil
in reply to: Red_Neil

Hi Maxim

 

Please see a screen shot of the pdf. The 'scratching' dissapears when I zoom in, but is present before this. Thanks.

 

 

Message 4 of 21
maxim_k
in reply to: Red_Neil

I see.
If I open your PDF with Preview app - the 'scratching' is not visible.
Light green background in the PDF consists of many triangular solids and the bitmap shines through at the junctions of these triangular solids.
Why do you use bitmap if it is not visible under light green solid hatch?
If it is only as temporary item for referencing, you can try to put it to unprintable layer.

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Maxim Kanaev
Architect
MARSS

MacACAD | Linkedin

Etiquette and Ground Rules of Autodesk Community
Message 5 of 21
Red_Neil
in reply to: maxim_k

I'm not sure I understand the solution you're suggesting. I have three sections to the drawing:

 

(1) The google PDF (bottom)

(2) An Ordinance Survey dwg of the area (middle)

(3) My drawing (top) 

 

I would like it to print to pdf in this order without the 'scratching', so that the google layer is only seen where there is no (2) or (3) on top of it.

 

 

Message 6 of 21
maxim_k
in reply to: Red_Neil

OK, try to substitute "google PDF" with raster image, created from this PDF. You can Save as in Preview app to convert PDF to JPG.

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Maxim Kanaev
Architect
MARSS

MacACAD | Linkedin

Etiquette and Ground Rules of Autodesk Community
Message 7 of 21
Red_Neil
in reply to: maxim_k

Sorry Maxim, how do I convert the pdf to a jpg?
Message 8 of 21
Red_Neil
in reply to: Red_Neil

Hi Maxim, I converted the pdf to a jpg and the same happened. Any further thoughts I could try? Thanks.

Message 9 of 21
maxim_k
in reply to: Red_Neil

Do you use transparency for light green solid hatch?
Can you share the drawing (or part of it) here? If yes, don't forget to share all external references (PDF, images).

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Maxim Kanaev
Architect
MARSS

MacACAD | Linkedin

Etiquette and Ground Rules of Autodesk Community
Message 10 of 21
Red_Neil
in reply to: maxim_k

Can I email you direct as it's a bit sensitive.

Message 11 of 21
maxim_k
in reply to: Red_Neil

Yes,
mkanaev@yandex.ru

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Maxim Kanaev
Architect
MARSS

MacACAD | Linkedin

Etiquette and Ground Rules of Autodesk Community
Message 12 of 21
maxim_k
in reply to: Red_Neil

What macOS do you have on your Mac and what AutoCAD LT version are you using?

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Maxim Kanaev
Architect
MARSS

MacACAD | Linkedin

Etiquette and Ground Rules of Autodesk Community
Message 13 of 21
maxim_k
in reply to: Red_Neil

Hi Neil,

 

Please look at the attached PDF.

Is it what you need?

If yes, then I can explain the trick.


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Maxim Kanaev
Architect
MARSS

MacACAD | Linkedin

Etiquette and Ground Rules of Autodesk Community
Message 14 of 21
Red_Neil
in reply to: Red_Neil

Morning Maxim, 

It's the viewport A2 Entrances & Exits that sems to cause the issue when the google layer is under the other layers. To get around the issue, for the 'Arena' viewport, I move the google layer out of the way. It seems that when the google layer is in place, the scratching occurs.

 

I hope that makes sense.

 

Thanks

 

Neil

Message 15 of 21
maxim_k
in reply to: Red_Neil

Do you see scratches in the PDF I attached to my last post?

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Maxim Kanaev
Architect
MARSS

MacACAD | Linkedin

Etiquette and Ground Rules of Autodesk Community
Message 16 of 21
Red_Neil
in reply to: maxim_k

No, I didn't

Message 17 of 21
maxim_k
in reply to: Red_Neil

>>>>> No, I didn't
So here is the trick I used to create this PDF:
- assign transparency to all solid hatches in the drawing and set it to 1
- in Print or Page Setup window check "Print transparency" option

This will force to create raster images in place of Solid Hatches in PDF output and scratches won't appear in it.

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Maxim Kanaev
Architect
MARSS

MacACAD | Linkedin

Etiquette and Ground Rules of Autodesk Community
Message 18 of 21
Red_Neil
in reply to: Red_Neil

Thanks for this, I can't seem to find the 'Print Transparency' option.

Message 19 of 21
maxim_k
in reply to: Red_Neil

It is here:

2021-01-22_20-30-35.png

 


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Maxim Kanaev
Architect
MARSS

MacACAD | Linkedin

Etiquette and Ground Rules of Autodesk Community
Message 20 of 21
Red_Neil
in reply to: Red_Neil

That's great Maxim, many thanks for all your help.

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