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Re: How to crop/trimmed images?


Chronological Thread 
  • From: Maxime Devos <address@hidden>
  • To: Philippe Joyez <address@hidden>, address@hidden
  • Subject: Re: How to crop/trimmed images?
  • Date: Thu, 13 Apr 2023 18:10:19 +0200
Op 10-04-2023 om 11:00 schreef Philippe Joyez:
Yes it's possible to crop images, but there is no GUI for that.

If you select the image you want to crop, you can use the menu Format->Adjust-
Clip. Then maybe you need to press the left key to see the input boxes for
the clipping dimensions in the toolbar. And mind that the UI is misleading
(IMHO it's a bug) : In the "Right" box, you are actually expected to enter the
*new width* of the image (and similarly, the "Top" box, wants the new
height.). So if you want to cut 1cm from the right, you may type 1w-1cm in the
"Right" box (1w means 1 x the original width, and TeXmacs will do the math).


I think I managed something, though I had to use 'move' to fix vertical spacing:

<move|<clipped|<image|Three-body_Problem_Animation_with_COM.gif|1w|1h|-0.1w|0.2h>||0.4h|0.76w|1.05h>||-0.5h> (*)

(*) Test image from: https://en.wikipedia.org/wiki/Three-body_problem#/media/File:Three-body_Problem_Animation_with_COM.gif

I just recalled how to use 'pdfcrop' without installing all of TeXlive ("guix shell texlive-tiny ghostscript -- pdfcrop [some-pdf].pdf" on my distribution), and my 'image' is a PDF, so I'll use the simpler 'pdfcrop' tool instead.

Greetings,
Maxime.

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