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Re: [O] Viewing pdf images


From: Doyley, Marvin M.
Subject: Re: [O] Viewing pdf images
Date: Mon, 10 Apr 2017 00:00:34 +0000

Hi Eduardo,

I also agree that in terms of resolution (pix per inch ) pdf and jpg are the 
same. However, pdf (and SVG) allow the image to be scaled with little loss in 
image quality. In my lab we typically save the images in pdf because the most 
biomedical journals don’t accept SVG file format (not yet).

Thanks,
M
PS Since emacs can display SVG, we are planning to use this as our default file 
format during the manuscript generation stage, and then convert to pdf at the 
end (just before submitting)

> On Apr 9, 2017, at 6:06 PM, Eduardo Mercovich <address@hidden> wrote:
> 
> Hi Marvin.
> 
>> For manuscripts, my research group and I typically save images in pdf 
>> format, much better resolution. It would be nice to view pdf  images when 
>> working in org-mode.
>> Does anybody know how to view pdf images in org-mode.
> 
> Excuse my question but there is something I don't understand here... I'd like 
> to be sure we are not scratching where it doesn't itch.
> PDF files don't show images at a better resolution, they just "encapsulate" 
> and show them. So, if you have a 2000x2000 px jpg, putting it inside a pdf 
> will not add resolution (nor lower it, if it's not compressed), but just add 
> a wrapper around it. The resolution is a property of the image file.
> 
> OTOH, different image formats do change the quality: jpg and (some) png are 
> lossy formats while tiff is looseless.
> So what kind of images are you talking about? Are they produced by you and 
> your team (and using what tools/methods), scanned from physical artifacts, or 
> taken from other sources?
> 
> Maybe there is no need to do all this pdf magic.
>> PS We also work with svg images too, that would also love to view in org-mode
> 
> Again, this is quite similar. You can produce pdf from svg: both are vector 
> images and are resolution independent. But emacs con show svg files directly 
> (see 
> https://urldefense.proofpoint.com/v2/url?u=https-3A__www.emacswiki.org_emacs_EmacsSvg&d=DwIDaQ&c=kbmfwr1Yojg42sGEpaQh5ofMHBeTl9EI2eaqQZhHbOU&r=s3_3riAscdqtNAzgOuwYB9g0dZVGcp8BNCy_RylYdxU&m=ToUr47iyS79VqRe2JGHpKEuFdjOC7Ae_27eFPP0IW_w&s=7L3s6Qt1QD87OGVmmSwlgpqsI1HZOUvEVFP6izsIYmc&e=
>  ).
> 
> Best...
> --
> eduardo mercovich
> 
> Donde se cruzan tus talentos con las necesidades del mundo, ahí está tu 
> vocación. (Anónimo)

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