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| Need a grid of 100 lines per inch |  
| Posted by: legswilly  - 09-06-2021, 09:14 AM - Forum: General questions 
- Replies (1) |  
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				Hi, I need a Ronchi screen of 100 lines per inch. That is vertical lines of alternating black and no colour, the lines of which are 0.0025 inch wide. This would give 100 black lines per inch.Could someone show how to do this, or even better, make a file that is for an A4 paper filled with the screen and I could get it printed on transparent film. I have a laser printer which I could try.
 I would also post the file on a telescope maker, astronomy forum, if that is OK.
 
 Please let there be a person that has pity on me.
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| Automated batch xcf layer combining and png exporting |  
| Posted by: gimpler  - 09-05-2021, 03:36 AM - Forum: Extending the GIMP 
- Replies (6) |  
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				Big favor to ask of you scripting/programming gurus. I have three directories full of Gimp XCF layers and need help automating the combining of them, and exporting the resulting images as PNGs.
 I'm agnostic to what language(s) are used, as long it'll run on a mac, specs below.
 
 So the idea is to sequentially loop through the three directories, load one respective XCF layer from each, and export the three-layer combination as a PNG in a 4th directory.  The PNG filename could be a concatenation of the three XCF filenames used for each resultant image.
 
 Directory structure looks like this:
 
 ProjectName
 Layer1Files (top layer)
 A0.xcf
 A1.xcf
 A2.xcf
 A3.xcf
 A4.xcf
 Layer2Files (middle layer)
 B0.xcf
 B1.xcf
 B2.xcf
 B3.xcf
 B4.xcf
 Layer3Files (background layer)
 C0.xcf
 C1.xcf
 C2.xcf
 C3.xcf
 C4.xcf
 CombinedPngs (to be created)
 A0B0C0.png
 A0B0C1.png
 ...
 A0B0C4.png
 A0B1C0.png
 A0B1C1.png
 etc.
 
 And so forth until we get from A0B0C0.png all the way to A4B4C4.png.
 
 Mac is running Catalina 10.15.7
 Gimp 2.10.24 per the Mac binary download.
 Python 2.7.16 per MacOS default. (Though I understand this version is obsolete.)
 Bash 3.2 is accessible (though zsh 5.7.1 is the default).
 Scheme I've see mentioned but know nothing about.
 Same with Fu.
 Happy to upgrade and/or install whatever's needed to get this done.
 
 THANK YOU to anyone willing to help with this!
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| Enhance Sharpen Does Not Work! |  
| Posted by: Mee  - 09-04-2021, 05:13 PM - Forum: General questions 
- Replies (1) |  
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				Enhance sharpen does not work on a text field on Gimp 2.1.On Gimp 2.8 you could use the enhance/sharpen in a text field or box??
 I have tried this on Fedora and Debian.
 On Xubuntu, Gimp 2.8 it works.
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