When im coping one image into excisting image and edit part of the copied image, there is a change of colour in the background where the removed part of the image used to be.

I have one picture,
adding a layer
adding image of stars into new layer
removing most of the stars/new image
outline of new image is still there

please see attached image

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Folks,
I'm a self taught GIMP user, please be gentle!
I'm painting car templates for a racing simulator called iRacing.  iRacing has Spec Maps which add Chrome and Roughness to the image.
The template contains layers for RG and B Channels.  They are setup to work in Photoshop which can handle layers in Greyscale.  These layers work in such a way that they merge to make a combination, which doesn't work in GIMPS RGB only way.
However, there is a work around which is to copy the image, make it's mode Greyscale and then Compose the R,G and B channels, adjusting the greyscale to your liking.  We export the file into the program as a TGA.

The Problem is this: If I make a fresh project this process seems to work fine.  However my old projects don't always work, when composing I only see a "Mask Layer" option.  Why is it not seeing the other layers that exist in the XCF file?
Kind Regards,
Rowdy.

don't know if this is acceptable or not, but here we go. I am a very beginner to gimp.  I would like to have someone create a template for me to create spheres with specific colors.  I would pay them of course.  What I am looking for is a template that I can make spheres that all I have to do is type the hex code for a specific color  and a sphere would be created with that color.  I would like it to initially be say 400x400 and I could scale it to the necessary size.   I think I have enclosed the image that I would like to use as a starting point.  I like this sphere because I can add text (in Visual Basic) and it looks good.  Some cololrs I would be using is light coral and light blue among others.  Is this possible?  Thanks

https://imgur.com/a/hBT4tOW

Color Picker x Sample Point

• Why are the values collected by Color Picker not the same as displayed by Sample point? 
  

• Am I using Color Picker the wrong way? Any adjustments I should have made? A bug? An outdated tool?
  

can't find the magic to enlarge an image copied to a layer, see attached
I started with a jpg, imported to gimp and removed the white background
copied that image to a layer and that copy operation created a new layer
named 'dropped buffer'. 

I thought I enlarged the copied image with the scale tool and moved it.


But the enlarged moved image is not an image really, its a selection outline, 
marching ants, and only that and it is actually in the layer that image was copied
to, not the created, dropped buffer, layer??

huh? this should be pretty simple....right? 

I think I don't care what layer the enlarged moved version ends up in, as long
as its the "real" image and not some ghost outline.

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I've been taking photos of sheet music and would like to print them.  But, when I print them the background is grey and I would like to make it white.

Is there a simple way to do that?

Thanks

Hello,
I have a white balance card that has specific RGB values, 219, 220, 220. I am trying to adjust my photo in gimp so that the area of the picture with that white balance card matches its actual numbers and thereby correcting all colors in the photo. I appreciate any help I can get on this! Thank you.

Hi all 

I have a rather general question, but I can't find the answer anywhere. For a presentation, I'm trying to explain why symmetrical images look asymmetrical when you pixelate them more roughly. 

My hunch is that a bigger pixel includes a larger part of the image's surface, but I'm looking for a more technical, thorough explanation.

If anyone could provide me with such an explanation, that would be very useful!

Thanks in advance!

Hello, I have been scanning my music A4.
I cannot find a good OMR so im scanning and cleaning up the scan.
All of the scans are 1200 dpi tiff at 1 bit.
im finding quite a few small specks. it there anything that can detect small specks and get rid of them?
Any speck that isn't connected to anything.

Regards

Warren.

Once one creates a custom gradient,  it needs to be saved to   /home/(yourdistro)/.config/GIMP/2.10/gradients.... And in Akana Peck's book Beginning  Gimp it states "once you've edited a gradient to your liking, the save button adds the gradient to your GIMP profile".

But just where is this "save" button? I've looked quite a bit, and tried gladhanding the user interface hoping to find an Easter egg...but can find nothing with a defacto "save" feeling to it.

Oddly enough, I've found that if I  hit the "duplicate this gradient" button twice, it will place a gradient.copy.ggr file in the designated directory, which works, but I'm just at a loss where I'm missing the save button..

Gimp 2.10.22