Hi, Everyone,

This is my first post here, so I hope I'm doing it correctly.

I make drawings of astronomical objects - galaxies,star clusters,planets, etc.,  through my telescope. After finishing a drawing, I scan it and process it in GIMP. The results are posted online in web sites like CloudyNights.com

There are about 20 steps in the process, so I would like to be able to automate the process. According to the GIMP manual, this can be done in Python.

Here are the steps, after the pencil drawing has been finished:

Scanning:

1. Slide drawing into scanner.
2. Adjust light and shade for grayscale scan.
3. Scan drawing.
4. Remove drawing and repeat above steps for next drawing.

GIMP Processing:

1. Open scanned drawing in GIMP.
2. Invert black and white.
3. Select circle for field of view.
4. Invert circle selection.
5. Use Color Picker tool to determine color of background around selected circle.
6. Use Paint Bucket tool to cover background with selected color.
7. Export modified image and save.
8. Close view.
9. Re-open image and select "New Layer".
10. Select Paintbrush tool (12 - 20px) to place "stars" over the drawn stars on the bottom layer.
11. Return to bottom layer.
12. Use Color Picker tool to select color of field-of-view background.
13. Use Paintbrush tool, at 20px size, to paint over stars on bottom layer.
14. Choice: Return to top layer and use various paintbrush tools to modify or enhance the object (galaxy, star cluster, etc.) OR remain on the bottom layer to use Smudge tol to modify oralter the image.
15. Use Text tool to create title for drawing and descriptive text.
16. Export image, save and close view.

Here is an example of the end result:

https://www.cloudynights.com/topic/61923...rsa-major/

I'm a newbie to GIMP scripting, so any recommendations, guidance or assistance will be appreciated!

Thanks,

Roy in New Mexico

Here is what the original drawing (above) looks like:

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My GIMP 2.10 (as well as 2.10.2) on Windows 7 (64bit) does NOT display any histograms on the "Adjust Color Curves".  Did I do something wrong?  Maybe some obscure setting that I can't find?  I think this is important.  Hard to imagine it could go unnoticed.  What's going on here?

https://gitlab.gnome.org/GNOME/gimp/issues/5

Some tips on setting up Gimp 2.10 on a smaller computer. There are plenty laptops around with 'wxga' 1366x768 px displays.

The demo uses Windows 10, also applicable to Windows 7 and Linux

1. Initial setup of theme and icon theme.
2. Setting up the toolbox icons, hiding icons, moving icons
3. Adjust the Gimp window to fit display.
4. A new default canvas size.

Video demo 7 minutes





direct link https://youtu.be/8M2P0N-qhm0

Edit: For potential Gimp users who have not already installed Gimp 2.10 a quick demo





direct link https://youtu.be/wFB-Jn2pmH0 duration 2 minutes

   
In my experience, ctrl works as intersection, and ctrl+shift works as subtraction.
Is it only me having this feature?

I have been using 2.10 for a week or so, and one thing has started to bother me.

The Transformation tools work very well, don't get me wrong. But for whatever reason, it seems that we have decided to take away the New Window/Dialog Box(which had buttons, sliders, and measuring aspect of the Transformation) and leave ourselves to "guessing" the amount of Transformation a layer takes, compared to previous versions of the software.

For instance, when Rotating a layer, there would be a handy indicator in a new Window telling me how much it has Rotated (by how many degrees). I cannot find this feature in the new version. Example included as an Attachment.

Also, there is no prompt for "OKing" the Transformation anymore. Now, it seems I must select a new Tool after performing the Transformation, and it just happens automatically.


I do not like these changes... is there a way to revert them in this new version, or an option to bring back the Window/Dialog Box?

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OS Windows 10
Gimp version 2.10.2

None of my addon scripts not working. I'm getting an execution error message: ( :1) eval: unbound variable: NORMAL-MODE. Please can someone help? I have quite a few script I don't want to get rid off yet. Thank you in advance.

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Hi all,

Please advise;

1)
Where can I find GIMP instruction manual, describing the tool list and their function? 

2)
The setting manual of GIMP, such as to increase the size of tool icons.

Thanks

Regards
SL

I've used GIMP 2.8 until 5/25/2018. I upgraded to GIMP 2.10 to try to get agile in performing simple tasks like opening images, exporting, curing selection ... But the slowness persists. Until 5/23/2018 to open an image in GIMP, export, sign image, all this was instantaneous. But, now there is a nuisance of "lag" of several seconds for each task, both in GIMP 2.8, as it continues to occur with the new version 2.10 ...

I asked this in another thread, but i think i have an idea what it does.

Photoshop has something called 'Flow'. Its how much "ink" a drawing tool produces with one stroke.
The difference between Flow and Opacity is that when you paint with 50% Opacity, it doesnt build up (unlike Flow).

I get the same behaviour from Force: the lower i set it, the more transparent the stroke becomes, and it builds up with several strokes on top of each other.

What i dont understand, is why the default is 50....
and why is it greyed out for the Pencil Tool ?