| Blurred display of images in PDFs created from EPS on Mac OS X [message #42304] |
Thu, 03 February 2005 09:03  |
jm
Messages: 32
Registered: April 2003
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I often make false colour maps of data in IDL and export as EPS
graphics which I used to import into FrameMaker documents. I have
recently migrated from Solaris to Mac OS X and plan to use Pages and
Keynote (I know, Pages is not a FrameMaker replacement, but that
another story.) Anyway, there is an irritating quirk in the way Mac OS
X displays the PDFs created from EPS files - the image embedded in the
graphic (say, a 20 by 20 array) is displayed upsampled and horribly
blurred. This is the case in Preview and Keynote, but not Acrobat 7
which shows it nice and crisp. Keynote shows the PDF image blurred in
editing and as a slide-show, but it does export a sharp PDF. Whilst
this is workable, it does mean not using the native Keynote slide-show
mode.
This is evidently a Mac OS X quirk, rather than anything to do with
IDL. However, despite some searching, I can't find any mention of it
any of the Apple lists etc. Furthermore, it may be something that only
occurs with arrays (i.e. images) embedded in EPS files - something IDL
users are likely to produce, which is why I've posted here.
Any ideas?
-John Mardaljevic
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