Re: Get the actual width/height of an image

[Emanuel Berg]

Yuan Fu wrote:

> There doesn’t seem to be a function to get the
> aspect ratio of the image, or the actual pixel
> height/width of the image. So can I get
> this information?

For everything batch and graphics, use ImageMagick.

For the specific problem, you can use the command
identify(1) which is part of ImageMagick.

  $ identify zhanna-friske.png 
  zhanna-friske.png PNG 1280x720 1280x720+0+0 8-bit sRGB 835952B 0.000u 0:00.000

You can then parse the output to answer an even more
specific question, e.g. what the height is:

  #! /bin/zsh
  pic-height () {
      local img=$1
      identify $img | awk '{print $3}' | cut -d 'x' -f 2
  }

  $ pic-height zhanna-friske.png 
  720

https://dataswamp.org/~incal/conf/.zsh/gfx

-- 
underground experts united
http://user.it.uu.se/~embe8573
https://dataswamp.org/~incal