Messages from Usenet group comp.lang.idl-pvwave, compiled by Paulo Penteado
Re: Blurred display of images in PDFs created from EPS on Mac OS X
jm@dmu.ac.uk writes: > 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? I think you are going to have to figure out how to get a better preview image into your EPS file. Here are some ideas: http://www.dfanning.com/tips/postscript_preview.html Cheers, David -- David Fanning, Ph.D. Fanning Software Consulting, Inc. Coyote's Guide to IDL Programming: http://www.dfanning.com/
David, I don't think it's anything to do with a preview image - the graphic is PDF distilled from the postscript. -John
jm@dmu.ac.uk wrote: > David, > > I don't think it's anything to do with a preview image - the graphic is > PDF distilled from the postscript. > > -John > Hi, I haven't done much with image output to PS on Mac OSX but I have been quite pleased with plots etc. These I have converted to PDF using pstopdf with nice results. Could you provide a small example of code that produces you postscript output so we could see the blurring? Ben