Dear Rudolf,

It is working for me.
Using my figure, I got 

(45126287sp,31048991sp) 

(1372,944) 


As Hans said, either change ~ to some path or set the directory of externalfigure.

Best regards,

Dalyoung

2019. 2. 24. 오전 5:58, ntg-context-request@ntg.nl 작성:

I fear it doesn't work. I used the above code with a test-picture of mine
(in .png and .jpg version) and got:

(0sp,0sp)
(0,0)

Now I'm baffled what the explanation could be. Are "mill" or "cow" somehow
specially prepared? I used:

ConTeXt  ver: 2018.03.16 22:20 MKIV beta  fmt: 2018.3.21 and
getfiguredimensions[~/my-test-picture.png]

Rudolf