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From: Henning Hraban Ramm <texml@fiee.net>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: \externalfigure question
Date: Fri, 17 Feb 2017 15:42:03 +0100	[thread overview]
Message-ID: <AD1D9A71-713E-45D9-BB26-8036EFEC1656@fiee.net> (raw)
In-Reply-To: <op.yvs544s0p7eajd@marco.fz-rossendorf.de>

Am 2017-02-17 um 15:20 schrieb j. van den hoff <veedeehjay@gmail.com>:

> I am unsure about the "canonical" way to scale images to the desired size. my current understanding is, that `scale=' should do what I want in a way portable across `context' incarnations. so currently I use commands like
> 
> \externalfigure[image.png][scale=750]
> 
> to adjust the image size to my taste.
> 
> my problem: the same document looks completely different regarding image size in the produced pdf with standalone installations on osx64 and linux-64. actually, on oxx64 I have to use something like `scale=1500' where on linux-64 `scale=750' seemingly does about the same.
> 
> questions:
> 
> * what am I missing? why does the same document compile differently? I can only guess that `context' (or luatex?) has two different opinions of dpi resolution on the two machines when producing the pdf? where can I control/check this?
> 
> * if `scale=' is not the way to achieve invariant and unambiguous size of images embedded in the document, what is? `width=XXX cm'? i.e.: how is this supposed to be done correctly(TM)?

I can’t tell you anything about the difference in calculations, otherwise it depends on what you want to achieve: I always use width= or height=, because I need specific sizes of my images. Or I define maxwidth=\textwidth. I never had a case where the actual scaling would have been important - maps might be a use case.


Greetlings, Hraban
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  reply	other threads:[~2017-02-17 14:42 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-17 14:20 j. van den hoff
2017-02-17 14:42 ` Henning Hraban Ramm [this message]
2017-02-17 14:43 ` Hans Hagen
2017-02-17 16:04   ` j. van den hoff
2017-02-17 16:51     ` Alan Braslau
2017-02-17 17:05       ` j. van den hoff
2017-02-17 17:43         ` Hans Hagen
2017-02-17 17:42       ` Hans Hagen
2017-02-17 18:06         ` Alan Braslau
2017-02-17 18:20           ` Hans Hagen
2017-02-17 18:20           ` j. van den hoff

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