EDIT - after posting, I realized I posted to the wrong forum.  I'll try to contact the Admins to get it moved/removed.

Hi all, I'm using GIMP 2.10.8  on  Mac 0S Sierra 10.12.2.  

How can I create a series of lines that radiate from the canvas center, and mark out equal segments of a circle? (I've put in place a horizontal and vertical guide, with the snap to guides turned on)

I've drawn two line segments, one that crosses the center of the canvas, and one that begins in the center of the canvas.  But the rotate tool is based on a point in the center of my line segment.  

ps - there is a video that shows how to do something like this, but there is no sound (!) and my eyes aren't good enough to see what s/he is actually doing. (I hope in this case it's ok I'm posting a link, I think it's the best way to explain)
https://www.youtube.com/watch?v=aN856eOx71k


Thank you very much
Hikaru


(I have some experience using photoshop, and I've made a flyer and a business card so far with GIMP.)

I have 2 images. One big and one small. I had to use them together. So I have to resize the small one. Everything is fine. The only problem is the scaled image looks a bit out of focus. So I tried Sharpen (unmask ). It didn't go well. The image become distorted with hue.

Now I tried to sharpen with synthesis. But it is giving me this error continuously


   

I tried with all other layers off, but the same error. Is there any method to fix this issue ? Thanks.

Hey, I have a quick question concerning the regular brushes, specifically those with hardness 25, 50, 75. Is it possible to invert them? As in instead of them going from their colour to fading radially, having them go from transparent to their colour?

I tried the reverse option in the tool options/dynamic options and to reverse the gradient but it did nothing.

   

Picture is of the kind of brush I'm talking about for clarity, I'd like to have it go from say transparent to black, as opposed to the normal colour into fading.

Thanks!

I have this:
https://drive.google.com/file/d/1aQ0hkLV...sp=sharing

How do I get it to look like one of these:
https://www.americansouthwest.net/utah/c...nts_l.html

I need to extract red cell tower from this image. What is the most effective way to remove background?

Attached Files

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I'm working on a huge (14'x8') image that I'm slicing down into individual standard US Letter size fragments. I need to export the layers created this way to a PDF with each layer as a page. When I do this, the individual pages it creates seem to keep the main canvas size of the huge image as the page size, rather than the boundary of each layer. Is there anything I can do to make each layer's boundary the size of its page in the PDF? I'd like to avoid having to manually crop each page, since there are 224 of them.

Thank you in advance!

Rather than creating multiple layers within GIMP to build animations with, I would like to be able to export multiple images with a naming system like sample_001.jpg, sample_002.jpg, sample_003.jpg etc.  The idea being, that each one will be the same image with the same filter applied, but each export will slightly modify one (or more) of the filters attributes.  For example, started with a normal image, and then on each export, applying a blur filter so that the first image is crystal clear, and the last image is max blur.  To do this manually, I can apply the blur filter -> export -> undo blur -> re-apply blur with a more intense setting -> export -> undo blur -> and so on.  Eventually having a folder of images with a "gradient" of blur applied to them collectively, which I can then import into a video editor to chain together.

I'm thinking I can use python for this, but haven't been able to find an example showing how that would be possible

I saw the option " Heal Transparency " under the " Enhance " menu just near to " Heal selection ". I have used " Heal selection " option but not sure what is the use of " Heal Transparency " ? Any tips will be great. Thanks.

I received a warning of red color from Google that 15 of my saved sites has leaked 
the password during a recent incident, which includes this site. I'd like to know
if other members here also experience the same issue??

I wanted to do something that I thought would be easier than it seems to be. Basically, I was hoping I could just simply make a rectangle selection (on a photo that has anywhere from 4 to 6 scanned photos from the scanner) and just right click each selection and export out. This doesn't seem possible, so I started making a macro that basically: Copies selection, pastes copy to new image, and then exports. The problem I now run into is that when it says "there's already a file with this name", it only has the option to Cancel or Manually Rename. There's simply no option to "save a copy" (incremental file name), so now every save needs manually renamed. I'd be totally fine with just "Untitled-0001", "Untitled-0002", etc. and without having to type it in every time.

I started getting a headache trying to script my macro to insert the current date and time at the naming screen instead of forcing me to manually type it in every time. 

Is there some easier way to go about this? The most simple way I was expecting was to just:
1. Ability to export current selection. 
2. Export with incremental naming capabilities whether in series or by current date & time.

Any help would be appreciated! I have boxes and boxes of photos to do this with.