http://www.gimp.org/tutorials/
Should provide you with some quicky lessons to achieve what you want.
Fred Roller
On Sep 17, 2015 11:40 AM, "Timothy Murphy" <gayleard@xxxxxxxxxx> wrote:
Shaheen Bakhtiar wrote:
>> I want to crop a PNG picture.
>> I see how to do it with ImageMagick,
>> once I know the pixel-positions of the corners of the rectangle.
>>
>> I'm wondering if there is a way of imposing a grid to read these numbers,
>> either with ImageMagick or some other application that runs under Fedora
> Gimp?
>
> But I’m still not sure what the questions is. With Gimp you can use the
> rulers to pull in guidelines than can be used to snap the cursor, bounding
> boxes, etc..
Thanks for your response.
I'd forgotten about gimp
(which I've always found a little difficult to use,
probably because it can do so much).
But I've downloaded it, and just need to learn how to guillotine.
--
Timothy Murphy
gayleard /at/ eircom.net
School of Mathematics, Trinity College, Dublin
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