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Re: Get the actual width/height of an image
From: |
Yuan Fu |
Subject: |
Re: Get the actual width/height of an image |
Date: |
Mon, 14 Sep 2020 17:40:12 -0400 |
> On Sep 14, 2020, at 5:18 PM, Corwin Brust <corwin@bru.st> wrote:
>
> Greetings!
>
> On Mon, Sep 14, 2020 at 3:53 PM Emanuel Berg via Users list for the
> GNU Emacs text editor <help-gnu-emacs@gnu.org> wrote:
>>
>> 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?
>
>
> I think we can get the dimensions from `image-size', but note the
> PIXELS argument:
>
> (image-size SPEC &optional PIXELS FRAME)
>
> | Documentation
> | Return the size of image SPEC as pair (WIDTH . HEIGHT).
>
> | PIXELS non-nil means return the size in pixels, otherwise return the
> | size in canonical character units.
>
> | FRAME is the frame on which the image will be displayed. FRAME nil
> | or omitted means use the selected frame.
>
> | Calling this function will result in the image being stored in the
> | image cache. If this is not desirable, call image-flush after
> | calling this function.
>
>
Wow, exactly what I want! Wonder why I missed it when reading Info. Thanks!
Yuan