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Old 01-31-2007, 11:41 AM   #1
roaryg
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Default How to recolor a pdf

I have a pdf map, everything is lineart and black or a shade of black. Thousands of objects of various shades of gray, such values as 43.1% black, etc. Does anyone know how to globally change anything that is black, into the equivalent shade of a pms color? Yes, I have pitstop, and it is easy to change, say, 100% black to 100% pms, using the global replace, but does anyone know how to change all blacks to all pms all at once? An action is possible but I would have to do all values from 0.1% through to 99.9% (ie. it would take 1000 lines in the action) and this action would probably be very slow.

Workarounds such as placing in InDesign and colourizing is not an option as further actions have to take place on the pdf (long story, ps from mapping program, has to be merged into another pdf, etc. etc.). Must be done in acrobat.

Thanks,
Tim

Last edited by roaryg; 01-31-2007 at 11:48 AM. Reason: Add 2nd paragraph
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Old 02-01-2007, 07:23 AM   #2
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Quote:
Originally Posted by roaryg View Post
I have a pdf map, everything is lineart and black or a shade of black. Thousands of objects of various shades of gray, such values as 43.1% black, etc. Does anyone know how to globally change anything that is black, into the equivalent shade of a pms color?
[ . . . ]
Workarounds such as placing in InDesign and colourizing is not an option as further actions have to take place on the pdf (long story, ps from mapping program, has to be merged into another pdf, etc. etc.). Must be done in acrobat.
I was hoping someone would come up with the perfect solution for you, but no luck so far.

Rummaging on the web I found a Windows-only (ActiveX) tool called Image ActiveX — Image Viewer CP Pro on the Surfpack site. It sounds as if it may be able to handle some of what you need.

Why couldn’t you go back into Illustrator or InDesign (or even Photoshop, according to this PDF lesson, if you can live with TIFF), do what you need to do, then make a new PDF that could be merged with others? Is the lineart map in some sort of proprietary format (or does it need to be)? It is likely enough I am confused, but thought I would raise the question anyway.

Maybe something better will come along.

   
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Old 02-01-2007, 09:03 AM   #3
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Hi Kathleen, thanks for the tip on the viewer, but it seems to be only for images. These lineart maps we get are produced by some obscure scientific mapping program in a government department, which apparently only produces black and white pdfs. We need to colour the map, then merge it into another pdf which contains the text, etc. You are correct, it could probably be done in Illustrator, but we get dozens at a time which have to be printed overnight, so bringing the maps into another software is too slow, we are trying to automate the workflow. We are looking at other pdf tools, I thought someone might know of one that can do this. I suspect we will have to get something programmed, as I get the same blank response wherever I post this message!

Thanks,
Tim
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Old 02-01-2007, 01:38 PM   #4
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Hi Kathleen, thanks for the tip on the viewer, but it seems to be only for images. These lineart maps we get are produced by some obscure scientific mapping program in a government department, which apparently only produces black and white pdfs. We need to colour the map, then merge it into another pdf which contains the text, etc. You are correct, it could probably be done in Illustrator, but we get dozens at a time which have to be printed overnight, so bringing the maps into another software is too slow, we are trying to automate the workflow. We are looking at other pdf tools, I thought someone might know of one that can do this. I suspect we will have to get something programmed, as I get the same blank response wherever I post this message!
Maybe the 1000-line script is more of a bargain than you figured, then; run it in the background or while you sleep.

Good luck with it. If you find the perfect solution, do let us know.

   
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Old 02-01-2007, 09:04 PM   #5
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Do you have a fairly recent version of CorelDraw and if so, can it open the PDF file and give you editable shapes? If so, I suspect you might be able to use its built-in VBA to automate the conversion job.

   
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Old 02-02-2007, 05:05 PM   #6
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If CorelDraw (and especially Illustrator) can't do what you want, here's a long shot which will probably only work if you're printing from films:

Make a colour-separated PDF; open the black page in Frust... sorry, Illustrator, and change all the blacks to Pantone.

   
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Old 02-02-2007, 09:33 PM   #7
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In Pitstop -
you can select all -
convert to grayscale (inspector)
then globally change grayscale to PMS (Global Change)

Patience is a virtue, with PitStop processing this action.

MSD
-----

I have a pdf map, everything is lineart and black or a shade of black. Thousands of objects of various shades of gray, such values as 43.1% black, etc. Does anyone know how to globally change anything that is black, into the equivalent shade of a pms color? Yes, I have pitstop, and it is easy to change, say, 100% black to 100% pms, using the global replace, but does anyone know how to change all blacks to all pms all at once?
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Old 02-06-2007, 06:13 AM   #8
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Hi Wharfrat, thanks, we tried that. I think that would work on a simple file with a few objects, but these maps have thousands. It takes an eternity to select all, and then when everything gets selected the options to change color are greyed out, possibly because there are masks inside masks, etc. etc. presumably too complex I guess. Thanks Steve and Robin but due to volume we are trying to avoid opening in other software, looking for a pdf solution.
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Old 02-07-2007, 04:20 PM   #9
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I don't suppose you could do (try, rather) the same thought in Photoshop, aye? (i.e., render pdf, edit image, etc)
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