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Andreas Jansson
Andreas Jansson
Inspiring
October 1, 2008
Question

[CS3] How can you get the effectivePPI or similar for an EPS?

  • October 1, 2008
  • 2 replies
  • 303 views
Hi!

Is there any way of getting out the equivalence of effective ppi for an EPS image?

Trying to read it out by the effectivePpi[0] results in:
Error: A value is not available for this type of image.

It's not present in the info palette of the user interface (and then of couse not in the scripting model). Is there a way of calculating it?

I can get the absoluteHorizontalScale...

Need to know if the image conforms to a certain standard, and the input is the required (effective) ppi, such as 300 ppi.

Kind regards,
Andreas
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2 replies

Andreas Jansson
Andreas JanssonAuthor
Inspiring
October 2, 2008
No, they are photos (bitmapped) and they all seem to be saved in Photoshop.

I opened some of the files with notepad, and read the first lines. I find the words: "Adobe Photoshop CS Windows".

I also notice another thing about these troubeling files: they all have the following text in the Info panel in InDesign:
"ICC Profile: CSA".
Hmmm... could this disturbe the ppi property?

If I save the file under a new name, and uncheck the "Postscript Colour Management" checkbox, the result is an EPS file with readable PPI values!

Do I have to tell my customer that she has to save all images without Postscript Color Management?

Kind regards,
Andreas
interesting_Flower157F
interesting_Flower157F
Inspiring
October 1, 2008
If it's a vector graphic, there is no meaning in talking about effective ppi. have you tested with a EPS bitmap and an EPS vector to see if there's difference in behaviour?
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